Patent Publication Number: US-2022233364-A1

Title: Absorbent article with channels and method for manufacturing thereof

Description:
CLAIM FOR PRIORITY 
     This application is a continuation of and claims the benefit of priority of U.S. application Ser. No. 16/613,555, filed Nov. 14, 2019, which is a U.S. National Stage Filing under 35 U.S.C. 371 from International Application No. PCT/EP2018/062386, filed on May 14, 2018, and published as WO2018/210753 on Nov. 22, 2018, which claims the benefit of priority to European Application No. 17202006.7, filed on Nov. 16, 2017 and to European Application No. 17200847.6, filed on Nov. 9, 2017 and to European Application No. 17198652.4, filed on Oct. 26, 2017 and to European Application No. 17198368.7, filed on Oct. 25, 2017 and to European Application No. 17198349.7, filed on Oct. 25, 2017 and to European Application No. 17196434.9, filed on Oct. 13, 2017 and to European Application No. 17190395.8, filed on Sep. 11, 2017 and to European Application No. 17183453.4, filed on Jul. 27, 2017 and to European Application No. 17171110.4, filed on May 15, 2017; the benefit of priority of each of which is hereby claimed herein, and which applications and publication are hereby incorporated herein by reference in their entirety. 
    
    
     TECHNICAL FIELD 
     The present invention pertains to the technical field of absorbent articles, more preferably disposable personal care articles such as diapers, baby pants, adult incontinent garments, and the like, and to absorbent structures for use in such absorbent articles. More specifically the present invention relates to an absorbent structure comprising an absorbent core between a topsheet and a backsheet. The present invention also relates to a method and apparatus for manufacturing such an absorbent article. 
     BACKGROUND 
     Absorbent articles such as diapers, baby pants, adult incontinent garments and the like, typically comprise an absorbent core, positioned in between a liquid permeable or pervious, hydrophilic or semi hydrophilic topsheet and a liquid impermeable or impervious backsheet. The absorbent core comprises absorbent material that is able to absorb fluid and liquid bodily excretions of the user of the absorbent article. 
     The absorbent material of the absorbent core may be an absorbent particulate polymer material which is dispersed in a matrix of cellulose fibers or fluff pulp in order to prevent the particulate material from aggregating, as well as to prevent gel blocking. Gel blocking can occur when the absorbent particulate polymer material absorbs liquid, as they tend to typically swell and form a gel structure. This gel structure often blocks the further transfer of liquid into the remaining absorbent core. As a result, the liquid may be unable to reach the remaining absorbent particulate polymer material and the efficiency of the overall absorbent article decreases significantly. Existing fluff pulp materials are not suited to cope with rapid, subsequent insults of fluid since they possess limited distribution capacities. Moreover existing fluff pulp materials exhibit a limited capacity of overall liquid intake. Furthermore, existing absorbent cores containing fluff pulp have a limited wet integrity, which leads to the shape and fit of the absorbent article being deformed when e.g. an absorbent article is being worn by a baby which moves around. 
     In recent years, there has been a strong demand for more flexible, thinner, light-weight, absorbent articles to resolve various problems associated with manufacturing, marketing, design, fit, wearing comfort, distribution, garbage disposal, material and energy consumption, transport and storage costs and the like. This lead to the search for and the development and production of absorbent articles of which the absorbent cores contains little to no cellulose fibers or fluff pulp, as the latter tend to be quite bulky, thus rendering generally more thick absorbent cores which reduces the overall wearing comfort of the user of the absorbent article. 
     Hence, various absorbent cores containing little to no cellulose fibers or fluff pulp were developed in the past few years to try and overcome the above drawbacks, whereby the relative high amounts of absorbent polymer materials necessary to replace the absorption, distribution and retention capacity of the excluded cellulose fibers and/or fluff pulp were loaded, distributed and immobilized within these new absorbent cores according to several techniques. However given the ability and capacity of the absorbent core to absorb, transport and retain fluid and liquids is heavily dependent upon the form, position and/or manner wherein these absorbent polymer materials are incorporated within the absorbent core several drawback remained unsolved. In general the substantially heterogeneously distributed absorbent cores having non-continuous compartments and/or clusters of absorbent polymer material have in general proven to be better in coping with the above mentioned problems, nevertheless they also proved to remain unsatisfactory within most of the available absorbent articles. Especially problematic however, were the substantially homogenously distributed absorbent structures having continuous layers of absorbent polymer particulate material given they exhibit a substantially homogenous swollen absorbent polymer material area for second, third and next liquid insults wherein the dry and/or wetted absorbent polymer material layer may actually act as a liquid barrier. These problems and complications are especially prevalent within very flexible, thin, lightweight absorbent structures wherein high amounts of absorbent polymer material are distributed within the absorbent core of the absorbent article. Adding even more, thicker and larger overlying acquisition and dispersing layers did not at all resolve the above cited absorption, distribution and retention problems and moreover made the absorbent articles commercially unviable, environmentally unsustainable and more difficult to manufacture, store and transport. 
     Furthermore an existing problem which has been associated with such absorbent cores containing no or little cellulose fibers or fluff pulp is related to the migration, loss and leakage of the absorbent particulate polymer material from the absorbent article during dry and/or wet state, which leads to irritation, skin problems and overall discomfort for the user. This again is also especially true in the more homogenously distributed absorbent structures given their immobilization and liquid distribution properties remain unsatisfactory to date. This lack of effective and efficient immobilization and liquid distribution lead to dysfunctional absorbent articles due to lowered uptake capacity, gel blocking, enhanced rewet values, leakages and the creation of ruptures and/or pinholes through the liquid pervious topsheet and/or liquid impervious backsheet of such absorbent articles. 
     Absorbent cores generally have a high absorbent capacity and the absorbent core may expand several times its weight and volume. These increases may cause the absorbent article to deform and/or to sag in the crotch region as they become saturated with liquid. This may cause leaks to occur via a longitudinal and/or transversal edge of the absorbent article. 
     A further existing problem of absorbent articles is that an absorbent capacity of an absorbent core of the absorbent article is often not fully used when liquid insults are received by the absorbent core at regions which are close to an edge of the absorbent article and/or absorbent core. This might occur especially when a wearer of the absorbent article is lying down (sideways) and/or is moving frequently and/or intensively. This makes the absorbent articles prone to leakage. 
     SUMMARY 
     The object of embodiments of the invention is to provide an absorbent article of the type stated in the preamble, with improved liquid distribution and absorption capacities. 
     Aspects—Channel Width 
     According to an aspect of the invention there is provided an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core comprising an absorbent material between a top core wrap sheet and a back core wrap sheet, said absorbent core being positioned in between said topsheet and said backsheet. The absorbent core has a first and second longitudinal edge and a first and second transverse edge. The absorbent core is provided with a plurality of attachment Zones comprising at least a first and a second attachment zone, said first and second attachment zone extending next to each other from a crotch region in the direction of the first and/or second transverse edge. In the first and second attachment zone any one of the following conditions is fulfilled: the top core wrap sheet is attached to said back core wrap sheet along an attachment which extends, seen in a transverse direction of the absorbent core, over a transverse distance which is at least 1 mm, preferably at least 2 mm, more preferably at least 3 mm, and most preferably at least 4 mm; the top core wrap sheet is attached to said back core wrap sheet along a discontinuous attachment at a plurality of locations at a distance of each other, seen in the transverse direction of the absorbent core, preferably over a transverse distance which is at least 1 mm, preferably at least 2 mm, more preferably at least 3 mm, and most preferably at least 4 mm. Upon wetting of the absorbent material of the absorbent article, any one of the above described conditions leads to the creation of a first and second channel at the first and second attachment zone, respectively. 
     Embodiments are based inter alia on the inventive insight that, by providing a plurality of attachment zones in the absorbent core, a corresponding plurality of channels is created in the absorbent core upon wetting such that liquid can be distributed and absorbed in an improved manner. Indeed, liquid can flow in the plurality of attachment zones and can be absorbed by the absorbent core through the side walls delimiting the plurality of attachment zones, in addition to liquid being absorbed through the top surface of the absorbent core. Because the first and second attachment zones extend in the direction of the first and/or second transverse edge as do the created first and second channel, liquid can be distributed adequately. Both the plurality of attachments zones, before swelling of the absorbent material, and the plurality of created channels, during and after swelling of the absorbent material, allow for a more rapid distribution of liquid, especially towards the transverse edges of the absorbent core. In addition to a fast and adequate distribution of liquid in the longitudinal direction, the presence of the plurality of attachment zones and/or the creation of the corresponding plurality of channels leads to a more rapid and efficient distribution of liquid in both the transverse direction of the absorbent core and in the depth direction of the absorbent core. Furthermore, overall liquid intake by the absorbent core is faster as a result. By giving the attachment zones a sufficient width, depth and/or length a quantity of liquid can be held temporarily whilst the absorption takes place. Because the liquid is distributed quickly, this effect is established not only during a first liquid insult, but also during an eventual second liquid insult, a third liquid insult and a fourth liquid insult. Further, the first and second attachment zones allow the absorbent core to swell in the shape of a tub while the first and second channels are formed. Indeed, a portion of the absorbent core between the first longitudinal edge and the first attachment zone will be allowed to rotate inward and upward and a portion of the absorbent core between the second longitudinal edge and the second attachment zone will be allowed to rotate inward and upward, which is made possible thanks to the sufficiently wide first and second attachment zone. 
     In a preferred embodiment, the first attachment zone and the attachment zone are substantially parallel and extend in a longitudinal direction of the absorbent core. In an alternative embodiment an angle between the first attachment zone and a longitudinal direction of the absorbent core and an angle between the second attachment zone and the longitudinal direction of the absorbent core is smaller than 5. In that manner appropriate first and second channels and an appropriate tub-shape of the absorbent product can be obtained upon wetting of the absorbent material. 
     In an exemplary embodiment, the attachment between the top core wrap sheet and the back core wrap sheet in the first and the second attachment zone is a permanent attachment, and the absorbent core is configured such that, in a wetted state of the absorbent material, the absorbent material extends over the first and second attachment zone. In that matter, the absorbent material bulges over the first and second attachment zone, thereby causing a tension in the absorbent core which causes the absorbent core, which is in a substantially flat state when dry, to curl up to form a tub shaped and/or cup shaped absorbent core including the first and second channel. 
     According to an aspect of the invention, there is provided an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core comprising an absorbent material between a top core wrap sheet and a back core wrap sheet, said absorbent core being positioned in between said topsheet and said backsheet. The absorbent core has a first and second longitudinal edge and a first and second transverse edge. The absorbent core is provided with a plurality of attachment zones comprising at least a first and a second attachment zone, said first and second attachment zone each extending from a crotch region in the direction of the first and/or second transverse edge. Preferably, the first channel is arranged adjacent to the second channel, seen in a transverse direction of the absorbent core. In the first and second attachment zone the top core wrap sheet is attached to the back core wrap sheet through a semi-permanent attachment configured to release after having been in contact with liquid. 
     Embodiments are based inter alia on the inventive insight that, by providing a plurality of attachment zones in the absorbent core, in combination with semi-permanent attachments, the absorbent core can swell in an improved manner, resulting in an improved liquid absorption. Indeed, when liquid flows in the attachments zones, the attachments are released and the absorbent core can “fill” or “overlap” the attachment zones and/or channels, wherein a portion of the absorbent core between the first longitudinal edge and the first channel will be allowed to rotate inward and upward and a portion of the absorbent core between the second longitudinal edge and the second channel will be allowed to rotate inward and upward, which is made possible thanks to the first and second channel and the swelling underneath the released top core wrap sheet. 
     In an exemplary embodiment of the second aspect, the top core wrap sheet is attached to the back core wrap sheet along a continuous or discontinuous attachment which extends, seen in a transverse direction of the absorbent core, over a transverse distance which is at least 1 mm, preferably at least 2 mm, more preferably at least 3 mm, and most preferably at least 4 mm. 
     In an exemplary embodiment of the second aspect, the semi-permanent attachment is configured to release after having been in contact with urine for a period of time, e.g. a period of time is smaller than 30 s. 
     According to an aspect of the invention, there is provided an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core comprising an absorbent material between a top core wrap sheet and a back core wrap sheet, the absorbent core being positioned in between said topsheet and said backsheet. The absorbent core has a first and second longitudinal edge and a first and second transverse edge. The absorbent core is provided with at least a first attachment zone. In the first attachment zone any one of the following conditions is fulfilled: the top core wrap sheet is attached to the back core wrap sheet along an attachment which extends, seen in a transverse and/or longitudinal direction of the absorbent core, over a transverse and/or longitudinal distance which is at least 1 mm, preferably at least 2 mm, more preferably at least 3 mm, most preferably at least 4 mm; the top core wrap sheet is attached to the back core wrap sheet along a discontinuous attachment at a plurality of locations at a distance of each other, seen in the transverse and/or longitudinal direction of the absorbent core. Upon wetting of the absorbent material, a first channel is created at said first attachment zone. 
     According to an exemplary embodiment, the first attachment zone extends from a crotch region in the direction of the first and/or second transverse edge. 
     According to an alternative embodiment, the first attachment zone extends in the transversal direction of the absorbent core in between the first and second longitudinal edge. 
     According to a preferred embodiment of the fourth aspect, the absorbent core is provided with at least a second attachment zone. The at least one second attachment zone extends in the transversal direction of the absorbent core in between the first and second longitudinal edge. 
     According to a preferred embodiment the plurality of attachment zones further comprises a third and a fourth attachment zone located at a distance of each other, the third and fourth attachment zone each extending in the direction of the first and/or second transverse edge. 
     Preferably, the distance between the first and the second attachment zone is different from the distance between the third and the fourth attachment zone. 
     According to an exemplary embodiment, the absorbent core has a front portion extending at one side of a transverse crotch line and a rear portion extending at the other side of the transverse crotch line. The first and second attachment zone extend at least in the front portion of the absorbent core; and the third and fourth attachment zone extend at least in the rear portion of the absorbent core. 
     The distance between the first and the second attachment zone may be smaller or bigger than the distance between the third and the fourth attachment zone. 
     In a preferred embodiment, the first attachment zone is connected to the third attachment zone through a first transverse attachment zone, and the second attachment zone is connected to the fourth attachment zone through a second transverse attachment zone. 
     In a possible embodiment, the first and the second attachment zone extend in a longitudinal direction of the absorbent core over a length which is longer than the length of the third and fourth attachment zone, and the first and the second attachment zone are located between the third and fourth attachment zone. 
     In an exemplary embodiment, the third attachment zone and the fourth attachment zone are arranged symmetrically with respect to a longitudinal center line of the absorbent core extending between the first and second transverse edge. 
     In a preferred embodiment the distance between the first and the second attachment zone is between 10 mm and 50 mm, preferably between 15 mm and 30 mm. 
     According to an exemplary embodiment, the length of the first and the second attachment zone is larger than 60 mm, preferably larger than 70 mm. 
     According to an exemplary embodiment, the absorbent article further comprises at least one transversal attachment zone extending from an end portion of the first attachment zone to a corresponding end portion of the second attachment zone, wherein upon wetting of the absorbent material, a third channel is created at said transversal attachment zone, thus connecting the first and second channels. 
     The skilled person will understand that the hereinabove described technical considerations and advantages for absorbent article embodiments also apply to the below described method embodiments, mutatis mutandis. 
     According to a fifth aspect, there is provided a method for manufacturing an absorbent article, said method comprising the steps of:
         guiding a first sheet material along a rotating member, wherein a surface of said rotating member is provided with a pattern with suction zones and non-suction zones; wherein said non-suction zones comprise at least a first and a second elongate zone extending in a circumferential direction of the rotating member;   applying an absorbent material on said first sheet material on the rotating member such that the suction zones are covered with absorbent material and substantially no absorbent material is present on the non-suction zones;   applying a second sheet material on top of the absorbent material on the first sheet material; wherein one of said first and second sheet material is a top core wrap sheet material, and the other one is a back core wrap sheet material;   attaching said first sheet material to said second sheet material at least in the areas where substantially no absorbent material is present, and such that at least a first and a second attachment zone are formed.       

     In a preferred embodiment, the attaching is done by applying pressure and heat on the top core wrap sheet material and/or the back core wrap sheet material in the areas where substantially no absorbent material is present. 
     According to a further embodiment, the attaching is done by a rotating member which is provided with at least a first and a second seal rib dimensioned for applying pressure and heat on the top core wrap sheet material and/or the back core wrap sheet material in the areas where substantially no absorbent material is present in order to create the first and second attachment zone, respectively. 
     In a preferred embodiment, a binder is applied to at least one portion of the first sheet material at a distance from the intended position of the first and second attachment zones, before the absorbent material is applied on said first sheet material and a binder is applied to at least one portion of the second sheet material before it is applied on top of the absorbent material on the first sheet material. Preferably, the at least one portion of the first sheet material and the at least one portion of the second sheet material are chosen such that in the application and attachment of the first sheet material to the second sheet material the plurality of portions are complementary, wherein preferably substantially the entire surface of the absorbent article is provided with binder on either the first sheet material or the second sheet material. 
     According to a further aspect there is provided a method for manufacturing an absorbent article, said method comprising: 
     a. guiding a first sheet material along a conveying or rotating member, wherein a surface of said conveying member is provided with a pattern with at least one suction zone and non-suction zone; wherein said at least one non-suction zone comprises at least a first zone extending in a conveying direction of the conveying member; 
     b. applying an absorbent material on said first sheet material on the rotating member such that the at least one suction zone is covered with absorbent material and substantially no absorbent material is present on the at least one non-suction zone: 
     c. applying a second sheet material on top of the absorbent material on the first sheet material; wherein one of said first and second sheet material is a top core wrap sheet material, and the other one is a back core wrap sheet material; 
     d. attaching said first sheet material to said second sheet material at least in the areas where substantially no absorbent material is present, and such that at least at least a first attachment zone is formed. 
     The attaching may be done by applying pressure and heat on the top core wrap sheet material and/or the back core wrap sheet material in the areas where substantially no absorbent material is present. 
     The attaching may be done by a rotating member which is provided with at least a first seal rib dimensioned for applying pressure and heat on the top core wrap sheet material and/or the back core wrap sheet material in the areas where substantially no absorbent material is present in order to create the first attachment zone. 
     A first binder may be applied to at least one portion of the first sheet material at a distance from the intended position of the first attachment zone, prior to step b, and a second binder may be applied to at least one portion of the second sheet material prior to step c. Preferably, the at least one portion of the first sheet material and the at least one portion of the second sheet material are chosen such that in the application and attachment of the first sheet material to the second sheet material the plurality of portions are complementary, wherein preferably substantially the entire surface of the absorbent article is provided with binder on either the first sheet material or the second sheet material. 
     The first binder applied on at least one portion of the first sheet material may be different from, preferably less strong than, the second binder applied on the at least one portion of the second sheet material. 
     The binder may be applied on at least one portion of the first sheet material as a first layer having a first thickness, and on the at least one portion of the second sheet material as a second layer having a second thickness which is different from, preferably higher than, the first thickness. 
     The binder may be applied on the first sheet material as a plurality of parallel first longitudinal stripes and on the second sheet material as a plurality of parallel second longitudinal stripes, wherein preferably a second longitudinal stripe thereof is located in between two first longitudinal stripes of the plurality of first longitudinal stripes. 
     Aspect—Color 
     According to an aspect of the invention, there is provided an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core comprising an absorbent material between a top core wrap sheet and a back core wrap sheet, said absorbent core being positioned in between said topsheet and said backsheet. The absorbent core has a first and second longitudinal edge and a first and second transverse edge. The absorbent core is provided with a plurality of attachment zones comprising at least a first and a second attachment zone located a distance of each other, said first and second attachment zone each extending from a crotch region in the direction of the first and/or second transverse edge. A position and/or shape of one or more attachment zones of the plurality of attachment zone is indicated by means of a distinguishable color and/or colored pattern. 
     Such embodiments have the advantage that, on the one hand the attachment zones result in an improved liquid distribution and absorption of the liquid, and on the other hand, the color and/or pattern allows a user to easily distinguish a front and a rear portion of the absorbent article. Indeed, by giving e.g. the first attachment zone a color and/or pattern which is different from the color and/or pattern of the second attachment zone, a user can remember easily e.g. which color has to be on the left or right side. The person skilled in the art understands that many color and/or pattern variants are possible which will allow a user to easily recognize a front and a rear portion. In addition to or alternative to allow a user to easily recognize the correct orientation of the absorbent article, the color and/or pattern which indicate the position and/or shape of the attachment zones may be utilized to provide more information to a user about the absorbent article by linking a particular color and/or pattern of the visual indication to a certain characteristic of the absorbent article such as size, type (e.g. diaper versus pants), etc. 
     In a preferred embodiment, the position of one or more of the plurality of attachment zones is indicated by means of a printed ink layer. 
     In exemplary embodiments the distinguishable color and/or colored pattern is provided on at least one of the topsheet, the top core wrap sheet, the backsheet and the back core wrap sheet. The color and/or colored pattern may be provided on either side of the topsheet, the top core wrap sheet, the backsheet and/or the back core wrap sheet. In addition or alternatively, the color and/or colored pattern is provided on an acquisition and/or a distribution layer of the absorbent article. 
     Features of the “channel width” aspects may be combined with the features of the “color” aspect. 
     Aspects—Local Removing 
     According to an aspect of the invention there is provided a method for manufacturing an absorbent article, said method comprising: 
     a. guiding a first sheet material along a rotating member, wherein a surface of said rotating member is provided with a pattern with at least one suction zone and at least one non-suction zone; 
     b. applying an absorbent material on said first sheet material on the rotating member; 
     c. locally removing the absorbent material applied on at least one attachment portion of the first sheet material located above the at least one non-suction zone, such that at least one remaining portion of the first sheet material located above the at least one suction zone is covered with absorbent material and substantially no absorbent material is present on the at least one attachment portion; 
     d. applying a second sheet material on top of the absorbent material on the first sheet material; wherein one of said first and second sheet material is a top core wrap sheet material, and the other one is a back core wrap sheet material; 
     e. attaching said first sheet material to said second sheet material at least in the at least one attachment portion, and such that at least one attachment zone is formed. 
     By locally removing the absorbent material on the at least one attachment portion it is ensured that the at least one attachment portion is substantially free of absorbent material which will result in a better attachment of the second sheet material to the first sheet material in the at least one attachment zone. 
     The at least one non-suction zone may comprise at least one elongate zone extending in a circumferential direction of the rotating member. In that manner an elongate attachment zone is created allowing realizing elongate channels in the absorbent article. 
     The at least one non-suction zone may be formed by at least one element protruding outwardly from the surface of the rotating member. In other words the at least one suction zone may be delimited by an outwardly protruding non-suction element. In that manner the areas containing absorbent material and the areas containing substantially no absorbent material may be neatly delimited. For example, the at least one outwardly protruding element may be at least one elongated element, more preferably a curved elongate element fixed to the outer surface of the rotating member. Preferably the at least one element is removable. In that manner, depending on the amount and/or the type of absorbent material and/or sheet material that is used, a suitably dimensioned element may be chosen. 
     The locally removing of the absorbent material may be done by mechanical means. In that manner a robust and simple means may be used to obtain an accurate cleaning of the at least one attachment portion. The mechanical means may be a rotatable mechanical means or a non-rotatable mechanical means. 
     The locally removing of the absorbent material may be done by a first brush, e.g. a first roller brush. In other embodiments a scraper of a wiper may be used with a scraping blade or a wiper blade, optionally in combination with a removal means. e.g. a suction means to remove the locally removed absorbent material. 
     In addition or alternatively the locally removing of the absorbent material may be done by causing an air flow above the at least one attachment portion, e.g. using an air jet system. 
     The method may further comprise scraping the absorbent material applied on the at least one remaining portion by a second roller brush, such that surface of the absorbent material is substantially even. This second roller brush will be different from the first roller brush. Preferably the bristles of the second roller brush will be less flexible than the bristles of the first roller brush. 
     For example, the bristles of the second roller brush may be made of metal, whilst the bristles of the first roller brush may be made of a flexible plastic such as nylon. 
     The method further may comprise discarding and/or collecting and/or recycling of the absorbent material removed from the at least one attachment portion. 
     A binder may be applied to at least one portion of the first sheet material at a distance from the intended position of the first attachment zone, prior to step b, and/or wherein a binder may be applied to at least one portion of the second sheet material including the intended position of the at least one attachment zone prior to step d. In that manner the fixation of the absorbent material to the first sheet material in the at least one suction zone may be further improved. 
     The at least one portion of the first sheet material and the at least one portion of the second sheet material may be chosen such that in the application and attachment of the first sheet material to the second sheet material the plurality of portions are complementary, wherein preferably substantially the entire surface of the absorbent article is provided with binder on either the first sheet material or the second sheet material. 
     The binder applied on at least one portion of the first sheet material may be different from, preferably less strong than, the binder applied on the at least one portion of the second sheet material. 
     The binder may be applied on at least one portion of the first sheet material as a first layer having a first thickness, and on the at least one portion of the second sheet material as a second layer having a second thickness which is different from, preferably higher than, the first thickness. 
     The binder may be applied on the first sheet material as a plurality of parallel first longitudinal stripes and on the second sheet material as at least one second longitudinal stripe located in between two first longitudinal stripes of the plurality of first longitudinal stripes. 
     The attaching may be done by applying pressure and/or heat on the top core wrap sheet material and/or the back core wrap sheet material in the at least one attachment portion. 
     The attaching may be done by a rotating member which is provided with at least one seal rib dimensioned for applying pressure and heat on the top core wrap sheet material and/or the back core wrap sheet material in the at least one attachment portion in order to create the at least one attachment zone. This may be a seal rib having a substantially continuous sealing surface or a seal rib provided with a pattern of sealing element. In that manner the realized attachment zone may comprise a continuous attachment zone or may comprise a series of adjacent attachment areas. 
     According to a further aspect there is provided an apparatus for manufacturing an absorbent article, said apparatus comprising: 
     a. a rotating member ( 10 ) for guiding a first sheet material along a surface thereof, wherein the surface of said rotating member is provided with at least one suction zone and at least one non-suction zone: 
     b. an application unit configured for applying an absorbent material on said first sheet material on the rotating member; 
     c. a removing unit configured for locally removing the absorbent material applied on at least one attachment portion of the first sheet material located above the at least one non-suction zone, such that at least one remaining portion of the first sheet material located above the at least one suction zone is covered with absorbent material and substantially no absorbent material is present on the at least one attachment portion; 
     d. a sheet feed unit configured for applying a second sheet material on top of the absorbent material on the first sheet material; wherein one of said first and second sheet material is a top core wrap sheet material, and the other one is a back core wrap sheet material; 
     e. an attachment unit configured for attaching said first sheet material to said second sheet material at least in the at least one attachment portion. 
     The technical features and advantages explained above for the method apply mutatis mutandis for the apparatus. 
     Preferably, the at least one non-suction zone may be provided with at least one removable insert (forming the above stated protruding element). Even more preferably the at least one insert has a substantially trapezoidal cross section having a bottom edge, a top edge and two side edges leading from the bottom edge to a top edge, wherein the top edge and the bottom edge are perpendicular on the transport direction of the first sheet material in the apparatus, the bottom edge is fixed to the rotating member, and the side edges delimit the suction zones. Preferably the side edges converge towards each other in the direction from the bottom edge to the top edge. 
     The removing unit may comprise a mechanical removal means configured for removing the absorbent material applied on the at least one non-suction zone of said first sheet material. In that manner a robust and simple means may be used to obtain an accurate cleaning of the at least one attachment portion. The mechanical means may be a rotatable mechanical means or a non-rotatable mechanical means. 
     The mechanical means may comprise a first brush, e.g. a first roller brush. The first roller brush may have bristles comprising a flexible plastic material, such as nylon. An axis of the first roller brush may be parallel to an axis of the rotating member. 
     The removing unit may comprise a first adjusting means configured for adjusting a distance between the mechanical removal means (e.g. the first roller brush) and rotating member. 
     The removing unit may comprise a first variable-speed motor configured for driving the mechanical removal means, such as the first roller brush. 
     The removing unit may comprise an air jet system configured for removing the absorbent material applied on the first sheet material above the at least one non-suction zone. 
     The apparatus may further comprises a second roller brush configured for scraping the absorbent material applied on the at least one suction zone such that surface of the absorbent material is substantially even. The bristles of the second roller brush may be less flexible than the bristles of the first roller brush. The bristles of the second roller brush may comprise metal material. An axis of the second roller brush may be parallel to the axis of the rotating member. 
     The apparatus may further comprise a discharge means configured for discarding and/or collecting and/or recycling of the removed absorbent material. The discharge means may comprise a vacuum source. 
     The attaching unit may be a rotating member which is provided with at least one seal rib dimensioned for applying pressure and/or heat on the top core wrap sheet material and/or the back core wrap sheet material in the at least one attachment portion in order to create the at least one attachment zone. 
     The apparatus may further comprise first means to apply binder to at least one portion of the first sheet material at a distance from the first zone before the application unit applies absorbent material, and further comprise second means to apply binder to at least one portion of the second sheet material including the intended position of the at least one attachment zone before the sheet feed unit applies this second sheet material on top of the absorbent material on the first sheet material. 
     The first means may be configured to apply a first binder on the first sheet material as a plurality of parallel first longitudinal stripes and the second means may be configured to apply a second binder on the second sheet material as at least one second longitudinal stripe located in between two first longitudinal stripes of the plurality of first longitudinal stripes. 
     The first means may be configured to apply a first binder and the second means may be configured to apply a second binder which is different from the first binder. 
     Aspect—Binder 
     According to another aspect of the invention there is provided an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core comprising an absorbent material between a top core wrap sheet and a back core wrap sheet, said absorbent core being positioned in between said topsheet and said backsheet. The absorbent core has a first and second longitudinal edge and a first and second transverse edge. The absorbent core is provided with a plurality of attachment zones comprising at least a first and a second attachment zone, said first and second attachment zone extending next to each other from a crotch region in the direction of the first and/or second transverse edge. A first binder is arranged in a first area between the top core wrap sheet and the back core wrap sheet at a distance from the first and second attachment zone, and a second binder is arranged in a second area between the top core wrap sheet and the back core wrap sheet. Preferably, the first area is substantially complementary to the second area. Preferably, the second area includes the first and second attachment zone. 
     According to yet another aspect of the invention there is provided an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core comprising an absorbent material between a top core wrap sheet and a back core wrap sheet, said absorbent core being positioned in between said topsheet and said backsheet. The absorbent core has a first and second longitudinal edge and a first and second transverse edge. The absorbent core is provided with at least a first attachment zone extending from a crotch region in the direction of the first and/or second transverse edge. A first binder is arranged in a first area between the top core wrap sheet and the back core wrap sheet at a distance from the first attachment zone, and a second binder is arranged in a second area between the top core wrap sheet and the back core wrap sheet. Preferably, the first area is substantially complementary to the second area. Preferably, the second area includes the first and second attachment zone. 
     According to an exemplary embodiment the first binder is different from the second binder. 
     According to another exemplary embodiment the first binder is the same as the second binder, and a transition zone is distinguishable between the first area and the second area. 
     According to an exemplary embodiment the first binder is arranged as a layer having a first thickness and the second binder is arranged as a layer having a second thickness which is different from the first thickness, preferably higher than the first thickness. 
     According to an exemplary embodiment the first area comprises a plurality of longitudinal stripes, and/or the second area comprises a plurality of longitudinal stripes. 
     According to an embodiment, a first binder is applied to at least one portion of the back core wrap sheet at a distance from the intended position of the first and/or second attachment zones before the absorbent material is applied, and a second binder is applied to at least one portion of the top core wrap sheet before it is applied on top of the absorbent material on the back core wrap sheet. 
     According to an alternative embodiment, a first binder is applied to at least one portion of the top core wrap sheet at a distance from the intended position of the first and/or second attachment zones before the absorbent material is applied, and a second binder is applied to at least one portion of the back core wrap sheet before it is applied on top of the absorbent material on the back core wrap sheet. Preferably, the at least one portion of the top core wrap sheet and the at least one portion of the back core wrap sheet are chosen such that in the application and attachment of the top core wrap sheet to the back core wrap sheet the plurality of portions are complementary, wherein preferably substantially the entire surface of the absorbent article is provided with binder on either the top core wrap sheet or the back core wrap sheet. According to an embodiment the first and second binder are the same binder. In alternative embodiments, the first and second binder are mutually different binders, such as different glues. It is clear to the skilled person that the first and second binder may be applied in either layers with the same thickness, or layers with a different thickness. 
     The skilled person understands that an absorbent article as described above, more in particular in view of the application of binder, can be distinguished from absorbent articles which are manufactured otherwise. More in particular, the above described application of binder, such as glue, is distinguishable in an absorbent article by examining the present bonds within the particular absorbent article by means of any one of the following: color analysis, UV analysis, chemical analysis, and the like. In other words, by examining the absorbent article, the skilled person can determine which type of binder has been used, where the particular binder has been applied, how many layers of binder have been applied, etc. 
     Aspects—Bridging Zone 
     According to an aspect of the invention there is provided an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core comprising an absorbent material between a top core wrap sheet and a back core wrap sheet, said absorbent core being positioned in between said topsheet and said backsheet. The absorbent core has a first and second longitudinal edge and a first and second transverse edge, wherein the absorbent core is provided with a plurality of attachment zones comprising at least one front attachment zone and at least one rear attachment zone and with at least one bridging zone extending at least partially between said front and rear attachment zone. The at least one front attachment zone and at least one rear attachment zone, when projected on a longitudinal direction of the absorbent core, do not overlap or overlap only partially and the bridging zone extends from a first longitudinal portion of the absorbent core to a second longitudinal portion of the absorbent core, wherein the first longitudinal portion is defined between the first longitudinal edge and a longitudinal center axis of the absorbent core and the second longitudinal portion is defined between the second longitudinal edge and the longitudinal center axis of the absorbent core, such that upon wetting of the absorbent material, a front and rear channel are created at said front and rear attachment zone, respectively, wherein the bridging zone allows a liquid flow between the first longitudinal portion and the second longitudinal portion. 
     Embodiments are based inter alia on the inventive insight that, by providing a plurality of attachment zones in the absorbent core, a corresponding plurality of channels is created in the absorbent core upon wetting such that liquid can be distributed and absorbed in an improved manner. Indeed, liquid can flow in the plurality of attachment zones and can be absorbed by the absorbent core through the side walls of the plurality of attachment zones, in addition to liquid being absorbed through the top surface of the absorbent core. Both the at least one front and at least one rear attachments zones, before swelling of the absorbent material, and the plurality of created channels, during and after swelling of the absorbent material, allow for a more rapid distribution of liquid, especially towards the transverse edges of the absorbent core. In addition to a fast and adequate distribution of liquid in the longitudinal direction by providing at least one front and one rear attachment zone, the presence of the plurality of attachment zones and/or the creation of the corresponding plurality of channels leads to a more rapid and efficient distribution of liquid in the depth direction of the absorbent core. Further in addition, by providing at least one bridging zone which extends at least partially between the front and rear attachment zone, liquid distribution in the transverse direction is enabled and/or improved such that liquid is able to “cross” the attachments zones and/or resulting channels to flow from the first longitudinal portion and the second longitudinal portion. This may be particularly useful in situations wherein liquid insults are received at a longitudinal portion, e.g. near one of the longitudinal edges. In such situations, provided attachments zones may block liquid from flowing transversally through the absorbent core, which leads to only a longitudinal portion of the absorbent core being used to absorb the liquid, which may cause leakage since the amount of absorbent material within said one longitudinal portion is limited. However, by providing a bridging zone between a front an rear attachment zone, interconnecting two longitudinal portions of the absorbent core, liquid is enabled to flow from one longitudinal portion through the bridging zone, to a neighboring longitudinal portion. In this manner, liquid can reach the absorbent material within the neighboring longitudinal portion and may be absorbed there. In other words, by providing at least one bridging zone an available liquid absorbing capacity is increased, especially in the transverse direction of the absorbent core. Furthermore, overall liquid intake by the absorbent core is faster as a result. 
     Also, the use of at least one bridging zone can improve the structure and integrity of the absorbent article. For example, the use of at least one bridging zone may improve the formation of a tub-shape upon wetting of the absorbent article. 
     According to an embodiment the bridging zone allows a liquid flow between the first longitudinal portion and the second longitudinal portion by capillary action. In this manner, liquid can flow through the absorbent material of the bridging zone without being obstructed and move between and/or beyond and/or throughout the front and/or rear attachment zone(s). By providing at least one front attachment zone and at least one rear attachment as defined above channels are created when the absorbent core is wetted. By providing a bridging zone, e.g. a capillary bridging zone, between the front and rear attachment zone, liquid taken up in absorbent material near a first side edge may migrate by capillary action in the direction of a second side edge. In other words, the liquid is on the one hand distributed by the channels and on the other hand allowed to migrate through the absorbent material from one side edge to the other side edge. This is advantageous, especially when a person wearing the absorbent article is lying down sideways. Indeed, when lying down the liquid may e.g. flow towards one side edge by gravity. This will cause a swelling of the absorbent material near that side edge, and the capillary bridge will allow the liquid to migrate towards the other side edge, in a transverse direction of the absorbent core, independently of the orientation of the absorbent article. The bridging zone enables liquid flow opposite to the forces of gravity, when a wearer of the absorbent article is lying down sideways. The presence of the bridging zone will prevent that liquid flow from one longitudinal portion to another longitudinal portion is blocked by attachments zones and/or channels positioned between and/or in the longitudinal portions. On the other hand the channels will be able to provide for a fast liquid distribution in a longitudinal direction of the absorbent core. 
     Preferably, the capillary bridging zone extends between the first front attachment zone and the first rear attachment zone, such that upon wetting of the absorbent material, a front and rear channel are created at said first front and rear attachment zone, respectively, wherein the capillary bridging zone extends between said front and rear channel. In that manner, after channel formation upon wetting, liquid can still flow, e.g. by capillary action, between the first rear and front attachment zone. It is noted that the capillary bridging zone may comprise temporary or semi-permanent attachment zones which loosen upon wetting, whilst the first front attachment zone and the first rear attachment zone remain attached upon wetting. Preferably, a minimum distance between the first front attachment zone and the first rear attachment zone is preferably larger than 3 mm, more preferably larger than 5 mm, even more preferably larger than 8 mm. In that way a sufficient flow can be guaranteed. This minimum distance (which is related to the capillary flow) may be varied depending on the size of the absorbent article. 
     According to an embodiment the bridging zone allows a liquid flow between the first longitudinal portion and the second longitudinal portion by mass flow. In this manner, liquid can benefit from channels formed by permanent and/or semi-permanent attachment zones to flow through the bridging zone and to move between and/or beyond and/or throughout the front and/or rear attachment zone(s). 
     According to a further embodiment, absorption capacity of the absorbent core may benefit from both capillary action and mass flow of liquid in order to enable liquid to be distributed quickly and adequately, for example when the bridging zone comprises one or more semi-permanent attachments. In reaction to a first liquid insult the liquid will be distributed by mass flow by means of the channel(s) formed at the semi-permanent attachment(s). However, in reaction to further liquid insults, the semi-permanent attachment(s) will release, loosen and/or dissolve which will lead to the bridging zone allowing the liquid to pass through by capillary action. In other words, the bridging zone may comprise a (semi-)permanent attachment in a first stage of wetting, and may comprise substantially no attachments in a further stage of wetting. 
     According to an embodiment, the at least one bridging zone is substantially free of attachments. In this manner, the bridging zone is formed in both a dry and a wet state of the absorbent core. No obstructions are present within the bridging zone such that liquid can flow or travel via the bridging zone from one longitudinal portion to a neighboring longitudinal portion. 
     According to an embodiment the at least one bridging zone comprises at least one semi-permanent attachment. In this manner, the bridging zone comprises one or more attachments in a dry state of the absorbent core. This may allow liquid to be distributed via corresponding channels formed at the one or more attachments, during a first liquid insult. In other words, liquid may flow through the bridging zone by mass flow. However, the bridging zone is transformed in a wet state of the absorbent core when the semi-permanent attachments are loosened because of the swelling of nearby absorbent material. When liquid is absorbed by the absorbent core in proximity of the semi-permanent attachments, the semi-permanent attachments will be released, such that no obstructions are present within the bridging zone such that liquid can flow or travel via the bridging zone from one longitudinal portion to a neighboring longitudinal portion via capillary action. 
     According to an embodiment the at least one bridging zone comprises fluff fibers. In this manner, the bridging zone is provided in both a dry and a wet state of the absorbent core such that liquid can flow or travel via the fluff fibers from one longitudinal portion to a neighboring longitudinal portion. 
     According to an embodiment the at least one bridging zone comprises at least one strip of airlaid material. In this manner, the bridging zone is provided in both a dry and a wet state of the absorbent core. No obstructions are present within airlaid material such that liquid can flow or travel via the airlaid material from one longitudinal portion to a neighboring longitudinal portion. According to an embodiment a minimal width of the bridging zone is at least 5 mm, preferably at least 10 mm and more preferably at least 15 mm. In this manner, a sufficient width is available to allow liquid to flow and/or travel through the bridging zone. The minimal width of the bridging zone is the smallest distance between the front attachment zone and the rear attachment zone between which liquid is allowed to flow. 
     According to an embodiment the front attachment zone and the rear attachment zone are continuous attachment zones and have a length, seen in the longitudinal direction, of at least 30 mm, preferably at least 40 mm and more preferably at least 50 mm. In this manner, by providing continuous attachment zones with a suitable length, a fast and adequate distribution of liquid in the longitudinal direction of the absorbent core is achieved, while enabling a fast and adequate distribution of liquid in the transverse direction of the absorbent core via the bridging zone(s) between the front attachment zone and the rear attachment zone. 
     According to an embodiment the front attachment zone and rear attachment zone extend in the longitudinal direction of the absorbent core; and/or wherein an angle between the front attachment zone and the longitudinal direction of the absorbent core and an angle between the rear attachment zone and the longitudinal direction of the absorbent core is smaller than 10°, preferably smaller than 5°. In this manner, by providing front an rear attachment zones which extend in a substantially longitudinal direction of the absorbent core, a fast and adequate distribution of liquid in the longitudinal direction of the absorbent core is achieved, while enabling a fast and adequate distribution of liquid in the transverse direction of the absorbent core via the bridging zone(s) between the front attachment zone(s) and the rear attachment zone(s). 
     According to an embodiment the plurality of attachment zones further comprises a second front attachment zone and/or a second rear attachment zone, wherein the at least one bridging zone extends between, on the one hand the first and/or second front attachment zones and, on the other hand the first and/or second rear attachment zones. 
     According to an embodiment said first and second front attachment zone extend next to each other from a crotch region in the direction of the first transverse edge. In this manner, by providing front attachment zones which extend in a substantially longitudinal direction of the absorbent core, a fast and adequate distribution of liquid in the longitudinal direction of the absorbent core is achieved, while enabling a fast and adequate distribution of liquid in the transverse direction of the absorbent core via the bridging zone(s) between the front attachment zone(s) and the rear attachment zone(s). According to an embodiment said first and second rear attachment zone extend next to each other from a crotch region in the direction of the second transverse edge. In this manner, by providing rear attachment zones which extend in a substantially longitudinal direction of the absorbent core, a fast and adequate distribution of liquid in the longitudinal direction of the absorbent core is achieved, while enabling a fast and adequate distribution of liquid in the transverse direction of the absorbent core via the bridging zone(s) between the front attachment zone(s) and the rear attachment zone(s). 
     According to an embodiment a distance between said first and second front attachment zone is larger than a distance between said first and second rear attachment zone. In this manner, a surface of absorbent material extending between the first and second front attachment zone is increased. By having a broader region of absorbent material located near the front part of the absorbent core, the absorbent core is especially suited for incorporation in absorbent articles for male users, since male users typically produce liquid insults closer to a front portion of the absorbent core as compared to liquid insults produced by female users. 
     According to an embodiment a distance between said first and second rear attachment zone is larger than a distance between said first and second front attachment zone. In this manner, a surface of absorbent material extending between the first and second rear attachment zone is increased. By having a broader region of absorbent material located near the central/rear part of the absorbent core, the absorbent core is especially suited for incorporation in absorbent articles for female users, since female users typically produce liquid insults closer to a central/rear portion of the absorbent core as compared to liquid insults produced by male users. 
     The skilled person will understand that the hereinabove described technical considerations and advantages for absorbent article embodiments also apply to the described absorbent core embodiment described below, mutatis mutandis. 
     According to a further aspect there is provided an absorbent core comprising an absorbent material between a top core wrap sheet and a back core wrap sheet, said absorbent core having a first and second longitudinal edge and a first and second transverse edge. The absorbent core is provided with a plurality of attachment zones comprising at least one front attachment zone and at least one rear attachment zone and with at least one bridging zone extending at least partially between said front and rear attachment zone, wherein the at least one front attachment zone and at least one rear attachment zone, when projected on a longitudinal direction of the absorbent core, do not overlap or overlap only partially; and the bridging zone extends from a first longitudinal portion of the absorbent core to a second longitudinal portion of the absorbent core. The first longitudinal portion is defined between the first longitudinal edge and a longitudinal center axis of the absorbent core and the second longitudinal portion is defined between the second longitudinal edge and the longitudinal center axis of the absorbent core, such that upon wetting of the absorbent material, a front and rear channel are created at said front and rear attachment zone, respectively, wherein the bridging zone allows a liquid flow between the first longitudinal portion and the second longitudinal portion. 
     Aspects—4 or 3 Attachment Zones 
     According to an aspect of the invention there is provided an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core comprising an absorbent material between a top core wrap sheet and a back core wrap sheet. The absorbent core is positioned in between the topsheet and the backsheet. The absorbent core has a first and second longitudinal edge and a first and second transverse edge. The absorbent core has a first portion and a second portion on either side of a transverse crotch line. The absorbent core is provided with a plurality of attachment zones where the top core wrap sheet is attached to the back core wrap sheet, said plurality of attachment zones comprising at least
         a first and a second elongate attachment zone extending next each other, at least in the first portion of the absorbent core in the direction of the first transverse edge, and   a third and a fourth elongate attachment zone extending next to each other, at least in the second portion of the absorbent core, in the direction of the second transverse edge.       

     Measured in a transverse direction, a first maximum distance between the first and the second attachment zone is bigger than a second maximum distance between the third and the fourth attachment zone. 
     It is noted that the first transverse edge may be a front edge or a rear edge depending on the desired use of the absorbent article. Similarly, the first portion may be a front portion or a rear portion depending on the desired use of the absorbent article. By having a different distance between the attachment zones in the front portion and in the rear portion, it is possible to tailor the absorbent article to the wearer. For example, for a male person the maximum distance may be larger in the front portion than in the rear portion, whilst for a female person the maximum distance may be larger in the rear portion than in the front portion. Further it is possible to optimize the difference between the front and the rear portion for obtaining an unisex absorbent article. 
     Also, by having a different distance between the attachment zones in the front portion and in the rear portion, the absorbent article can be better tailored to the needs of the wearer, wherein any one or more of the following may be taken into account: age, weight, type of bodily exudates (urine, stool, etc.), pelvis size, etc. Not only for baby diapers but also for adult incontinence absorbent articles, the liquid absorption and management properties can be significantly improved in that manner. 
     According to another aspect of the invention there is provided an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core comprising an absorbent material between a top core wrap sheet and a back core wrap sheet. The absorbent core is positioned in between said topsheet and said backsheet. The absorbent core has a first and second longitudinal edge and a first and second transverse edge. The absorbent core is provided with a plurality of attachment zones where the top core wrap sheet is attached to the back core wrap sheet, said plurality of attachment zones comprising at least
         a first and a second attachment zone extending next to each other from a crotch region in the direction of the first transverse edge, and   a third attachment zone extending from the crotch region in the direction of the second transverse edge, wherein seen in a projection on a transverse direction the third attachment zone is located between the first and the second attachment zone.       

     It is noted that the first transverse edge may be a front edge or a rear edge depending on the desired use of the absorbent article. By having a first and a second attachment zone in the front or rear portion and a third attachment zone in the rear or front portion, respectively, said third attachment zone being such that it is between the first and the second attachment zone, seen in a projection as defined above, it is possible to tailor the absorbent article to the wearer. For example, for a male person the first and second attachment zone may be in the front portion and the third attachment zone may be in the rear portion, whilst for a female person the first and second attachment zone may be in the rear portion and the third attachment zone in the front portion. Further it is possible to optimize the difference between the front and the rear portion for obtaining an unisex absorbent article. 
     For an embodiment with a third and fourth attachment zone, the first distance between the first and the second attachment zone may be at least 5%, preferably at least 10% bigger, even more preferably at least 20% bigger than a second distance between the third and the fourth attachment zone. This difference may be optimized in function of the desired used. For example, for male persons the difference may be bigger. 
     In an embodiment which is preferred for a male person, the first and the second elongate attachment zone may each have a front end adjacent to absorbent material and a rear end adjacent to absorbent material or on the transverse crotch line. And the third and the fourth elongate attachment zone may each have a rear end adjacent to absorbent material and a front end adjacent to absorbent material or on the transverse crotch line (L). It is noted that the first attachment zone may be connected to the third attachment zone: in that case the rear end of the first attachment zone and the front end of the third attachment zone will be on the transverse crotch line. Similarly, the second attachment zone may be connected to the fourth attachment zone: in that case the rear end of the second attachment zone and the front end of the fourth attachment zone will be on the transverse crotch line. 
     In an embodiment which is preferred for a female person, the first and the second elongate attachment zone may each have a rear end adjacent to absorbent material and a front end adjacent to absorbent material or on the transverse crotch line. And the third and the fourth elongate attachment zone may each have a front end adjacent to absorbent material and a rear end adjacent to absorbent material or on the transverse crotch line (L). It is noted that the first attachment zone may be connected to the third attachment zone: in that case the front end of the first attachment zone and the rear end of the third attachment zone will be on the transverse crotch line. Similarly, the second attachment zone may be connected to the fourth attachment zone: in that case the front end of the second attachment zone and the rear end of the fourth attachment zone will be on the transverse crotch line. 
     For an embodiment with a third central attachment zone which is preferred for a male person, the first and the second elongate attachment zone may each have a front end adjacent to absorbent material and a rear end adjacent to absorbent material or on the transverse crotch line. And the third elongate attachment zone may have a rear end adjacent to absorbent material and a front end adjacent to absorbent material or on the transverse crotch line (L). It is noted that the first attachment zone may be connected to the third attachment zone: in that case the rear end of the first attachment zone and the front end of the third attachment zone will be on the transverse crotch line. Similarly, the second attachment zone may be connected to the third attachment zone: in that case the rear end of the second attachment zone and the front end of the third attachment zone will be on the transverse crotch line. 
     For an embodiment with a central third attachment zone, which is preferred for a female person, the first and the second elongate attachment zone may each have a rear end adjacent to absorbent material and a front end adjacent to absorbent material or on the transverse crotch line. And the third elongate attachment zone may have a front end adjacent to absorbent material and a rear end adjacent to absorbent material or on the transverse crotch line (L). It is noted that the first attachment zone may be connected to the third attachment zone: in that case the front end of the first attachment zone and the rear end of the third attachment zone will be on the transverse crotch line. Similarly, the second attachment zone may be connected to the third attachment zone: in that case the front end of the second attachment zone and the rear end of the third attachment zone will be on the transverse crotch line. 
     For an embodiment with a third and fourth attachment zone, seen in a projection on the longitudinal direction of the absorbent core, the first and the second attachment zone may extend over a length which is less than the length of the third and fourth attachment zone. To fit better to the body the third and fourth attachment zones which are closer to each other may be longer to extend over a longer part of the crotch region, for example the third and fourth attachment zones may extend both in the first and the second portion of the absorbent core. Preferably, the first and the second attachment zone extend over a length which is at least 5% less, more preferably at least 10% less than the length of the third and fourth attachment zone. Preferably the first and the second attachment zone extend over a length which is at least 25%, more preferably at least 35%, even more preferably at least 45% of the length of the third and fourth attachment zone. 
     For an embodiment with a central third attachment zone, seen in a projection on the longitudinal direction of the absorbent core, the first and the second attachment zone may extend over a length which is less than the length of the third attachment zone. To fit better to the body the third attachment zone may be longer to extend over a longer part of the crotch region, for example the third attachment zone may extend both in the first and the second portion of the absorbent core. 
     Preferably, the first and the second attachment zone extend over a length which is at least 5% less, more preferably at least 10% less than the length of the third attachment zone. Preferably the first and the second attachment zone extend over a length which is at least 25%, more preferably at least 35%, even more preferably at least 45% of the length of the third attachment zone. 
     In preferred embodiments, especially suitable for male persons, the first transverse edge may be a front edge intended to be positioned at a front side of a person, and the second transverse edge may be a rear edge intended to be positioned at a rear side of a person; wherein the first portion of the absorbent core is a front portion and the second portion is a rear portion. 
     In preferred embodiments, especially suitable for female persons, the first transverse edge may be a rear edge intended to be positioned at a rear side of a person, and the second transverse edge may be a front edge intended to be positioned at a front side of a person; wherein the first portion of the absorbent core is a rear portion and the second portion is a front portion. 
     The first attachment zone and the second attachment zone may be arranged symmetrically with respect to a longitudinal center axis of the absorbent core extending between the first and second transverse edge. Since the body is more or less symmetrical this is usually preferred. 
     The distance between the first and the second attachment zone may be between 15 and 70% of the width of the absorbent core, more preferably between 20 and 50%. For example, the distance between the first and the second attachment zone may be between 10 mm and 100 mm, more preferably between 20 mm and 80 mm, preferably between 30 mm and 70 mm. 
     The distance between the third and the fourth attachment zone may be between 5 and 60% of the width of the absorbent core, more preferably between 10 and 40%. For example, the distance between the third and the fourth attachment zone may be between 5 mm and 60 mm, more preferably between 10 mm and 50 mm, even more preferably between 15 mm and 40 mm. The length of the first and the second attachment zone may be larger than 5% of the length of the absorbent core; preferably larger than 10%, more preferably larger than 15%. e.g. larger than 20%. Similarly, the length of the third and the fourth attachment zone may be larger than 5% of the length of the absorbent core; preferably larger than 10%, more preferably larger than 15%. e.g. larger than 20%. Also, for an embodiment with a third central attachment zone, the length of the third attachment zone may be larger than 5% of the length of the absorbent core; preferably larger than 10%, more preferably larger than 15%, e.g. larger than 20%. 
     The length of the third and the fourth attachment zone may be larger than the length of the first and the second attachment zone, preferably at least 10% larger, more preferably at least 20% larger. In a possible embodiment, seen in a projection on a longitudinal direction of the absorbent article, a projection of the first and second attachment zone does not overlap with a projection of the third and fourth attachment zone. However, in other embodiments there may be a partial or even a full overlap. For example, the third and fourth attachment zone may extend in between the first and second attachment zone. 
     In a possible embodiment with a central third attachment zone, seen in a projection on a longitudinal direction of the absorbent article, a projection of the first and second attachment zone does not overlap with a projection of the third attachment zone. However, in other embodiments there may be a partial or even a full overlap. For example, the third attachment zone may extend in between the first and second attachment zone. 
     In a possible embodiment the first attachment zone may be separated from the third attachment zone by absorbent material, and the second attachment zone may be separated from the fourth attachment zone by absorbent material. In that manner a capillary bridge is created between the first and second attachment zones on the one hand and the third and fourth attachment zones on the other hand. In an exemplary embodiment a minimum distance between an end on the first attachment zone and an end of the third attachment zone is at least 1% of the length of the absorbent core, preferably at least 2%. Preferably this distance is smaller than 50% of the length of the absorbent core, more preferably smaller than 20%. The same may apply for a minimum distance between the second and fourth attachment zone. 
     In another possible embodiment the first attachment zone may be connected to the third attachment zone through a first semi-permanent attachment zone and the second attachment zone may be connected to the fourth attachment zone through a second semi-permanent attachment zone. Such semi-permanent attachment zones are configured to be detached upon wetting, so that liquid can flow in a transverse direction through the absorbent material of the absorbent core. 
     In a possible embodiment one or more permanent or semi-permanent transverse attachment zones may be provided to further improve the liquid distribution in the transverse direction. 
     Preferably, the first, second, third and fourth attachment zones are permanent attachment zones which remain attached upon wetting. Also, in an embodiment with a central third attachment zone, preferably the first, second, and third attachment zones are permanent attachment zones which remain attached upon wetting. 
     The length of the first and the second attachment zone may be larger than 30 mm, preferably larger than 40 mm, more preferably larger than 50 mm. The length of the third and the fourth attachment zone may be larger than 30 mm, preferably larger than 40 mm, more preferably larger than 50 mm. The first and second attachment extend, seen in the transverse direction of the absorbent core, over the transverse distance which may be at least 1 mm, preferably at least 3 mm, more preferably at least 4 mm, even more preferably at least 5 mm, most preferably at least 6 mm. 
     The first attachment zone and the second attachment zone may be substantially parallel and extend in a longitudinal direction of the absorbent core; or wherein an angle between the first attachment zone and a longitudinal direction of the absorbent core and an angle between the second attachment zone and the longitudinal direction of the absorbent core may be smaller than 5°. 
     The third attachment zone and the fourth attachment zone may be substantially parallel and extend in a longitudinal direction of the absorbent core; or an angle between the third attachment zone and a longitudinal direction of the absorbent core and an angle between the fourth attachment zone and the longitudinal direction of the absorbent core may be smaller than 5°. Also, in the embodiment with a central third attachment zone, the third attachment zone may extend in a longitudinal direction of the absorbent core; or an angle between the third attachment zone and a longitudinal direction of the absorbent core may be smaller than 5°. 
     Seen in a projection on a longitudinal direction of the absorbent core, the plurality of attachment zones together may cover at least 30%, preferably at least 40% of a length of the absorbent core. In yet other embodiments which are suitable for both male and female persons (unisex), the difference between the first distance and the second distance may be less than 20% of the width of the absorbent article, preferably less than 15%, e.g. between 10 and 15%. In an exemplary embodiment the first distance may be less than 10%, e.g. between 0 and 8% or between 1 and 5%, wherein the width is measured in the transverse direction of the absorbent core. 
     Aspects—5 Zones 
     According to an aspect of the invention there is provided an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core comprising an absorbent material between a top core wrap sheet and a back core wrap sheet, said absorbent core being positioned in between said topsheet and said backsheet. It is noted that the top core wrap sheet and the bottom core wrap sheet may be formed as one integral sheet or may comprise separate portions around the absorbent material. The absorbent core has a first and second side edge, a front edge and a rear edge. The absorbent core is provided with a plurality of attachment zones where the top core wrap sheet is attached to the back core wrap sheet, and where substantially no absorbent material is present. Seen in a longitudinal direction of the absorbent article, looking from the front edge to the rear edge, the absorbent core comprises subsequently a first, second, third, fourth and fifth zone. The absorbent core comprises a front portion extending between the front edge and a transverse crotch line of the absorbent core, and a rear portion extending between the rear edge and the transverse crotch line of the absorbent core. The first, second and third zone extend in the front portion of the absorbent core and the fourth and fifth zone extend in the rear portion. 
     Preferably, in the first and fifth zone substantially no permanent attachment zones with a liquid guidance or distribution function are present. In other words, the first and fifth zones may comprise small local attachment points provided for other reasons that liquid distribution management. 
     The second zone comprises at least a first elongate front attachment zone of the plurality of attachment zones, said first front attachment zone extending from an edge of the first zone in the direction of the third zone. 
     At least the fourth zone comprises at least a first rear elongate attachment zone of the plurality of attachment zones, said first rear attachment zone extending from an edge of the fifth zone in the direction of the third zone. 
     Preferably at least one of said second, third and fourth zone comprises a bridging zone (B) allowing a liquid flow between the first and the second side edge by capillary action through the absorbent material and/or by mass flow. It is noted that the liquid path through the bridging zone may be any path going from an area near the first side edge to an area near the second edge. Preferably the distance between the transverse crotch line and the transverse center line passing through the middle of the core is less than 10% of the length of the core. 
     It is noted that the first rear attachment zone may extend in the third zone, i.e. in the front portion of the absorbent core. 
     It is noted that the first front attachment zone may extend in the third and/or the fourth zone, i.e. in the rear portion of the absorbent core. 
     By providing at least one elongate front attachment zone and at least one elongate rear attachment as defined above channels are created when the absorbent core is wetted. By providing a bridging zone in at least one of the second, third and fourth zone, notwithstanding the creation of a channel, liquid taken up in absorbent material near the first side edge may migrate by capillary action and/or mass flow in the direction of the second side edge. In other words, the liquid is on the one hand distributed by the channels formed by the at least one front attachment zone and at least one rear attachment zone, and on the other hand allowed to be transported from one side edge to the other side edge by capillary action and/or by mass flow via the bridging zone. This is advantageous, especially when a person wearing the absorbent article is lying down on its side. Indeed, when lying down the liquid may flow towards one side edge by gravity. This will cause a swelling of the absorbent material near that side edge, and the bridging zone will allow the liquid to flow towards the other side edge against the gravity force by capillary action. On the other hand the channels will be able to provide for a fast liquid distribution through the second, third and fourth zone. 
     Preferably, the bridging zone extends between the first front attachment zone and the first rear attachment zone, such that upon wetting of the absorbent material, a front and rear channel are created at said first front and rear attachment zone, respectively, wherein the bridging zone extends between said front and rear channel. In that manner, after channel formation upon wetting, liquid can still flow by capillary action and/or mass flow between the first rear and front attachment zone. It is noted that the bridging zone may comprise secondary temporary attachment zones which loosen upon wetting, whilst the first front attachment zone and the first rear attachment zone remain attached upon wetting. Also the bridging zone may comprise attachment zones extending between the first side edge and the second side edge to promote a mass flow action between an area near the first side edge to an area near the second side edge, wherein said areas are located at opposite sides of the first front/rear attachment zone. It is noted that the liquid path through the bridging zone may be any path going from an area near the first side edge to an area near the second edge. It may be a straight transverse zone, but it may also be a curved zone, or a partially straight and partially curved zone. Preferably, a minimum distance between the first front attachment zone and the first rear attachment zone is larger than 3 mm, more preferably larger than 5 mm, even more preferably larger than 8 mm. In that way a sufficient flow can be guaranteed. This minimum distance (which is related to the capillary flow and/or mass flow) may be varied depending on the size of the absorbent article. In a preferred embodiment the bridging zone is configured to cause a capillary flow so that a flow against the gravity force is possible. 
     In an advantageous embodiment the first rear elongate attachment zone extends into the third zone. In that manner a continuous channel is formed between the front and the rear portion of the absorbent core. 
     Preferably, the first zone extends over a length corresponding with at least 5%, more preferably at least 10% of the length of the absorbent core seen in the longitudinal direction. 
     Preferably, the fifth zone extends over a length corresponding with at least 10% of the length of the absorbent core seen in the longitudinal direction, preferably at least 20%, more preferably at least 25%. In that manner the absorbent material in the first zone and the fifth zone will swell upon wetting and created bands at both sides of the crotch region. Such bands will create a barrier such that it is more difficult for any liquid in the crotch region to flow out of the absorbent core. 
     Preferably, the second, the third and/or the fourth zone each extends over a length corresponding with at least 10% of the length of the absorbent core, seen in the longitudinal direction, preferably at least 15%. More preferably the front and rear attachment zone, when projected on the longitudinal direction extend over at least 70%, more preferably at least 80% of the total length of the second, the third and/or the fourth zone. In that manner a good channel creation with sufficient liquid distribution through the absorbent core is achieved. 
     Preferably the first front attachment zone extends in a longitudinal direction of the absorbent core; or an angle between the first front attachment zone and a longitudinal direction of the absorbent core may be smaller than 5°. 
     Preferably the first rear attachment zone extends in a longitudinal direction of the absorbent core; or an angle between the first rear attachment zone and a longitudinal direction of the absorbent core may be smaller than 5°. 
     Preferably, the length of the first front attachment zone is larger than 5% of the length of the absorbent core; preferably larger than 10%, more preferably larger than 15%; and/or wherein the length of the first rear attachment zone is larger than 5% of the length of the absorbent core, preferably larger than 10%, more preferably larger than 15%. Preferably the length of the first front attachment zone is at least 10%, more preferably at least 25%, even more preferably at least 35%, or even at least 50 or 75% of the length of the first rear attachment zone. Alternatively, the length of the first rear attachment zone is at least 10%, more preferably at least 25%, even more preferably at least 35%, or even at least 50 or 75% of the length of the first front attachment zone. 
     In an exemplary embodiment the second zone comprises a second front attachment zone extending next to the first front attachment zone, seen in the longitudinal direction. Preferably the first front attachment zone and the second front attachment zone are arranged symmetrically with respect to a longitudinal center line of the absorbent core. Preferably the distance between the first and the second front attachment zone is between 20 mm and 70 mm, more preferably between 30 mm and 60 mm, even more preferably between 40 mm and 55 mm. Preferably the distance between the first and the second front attachment zone is between 15 and 70% of the width of the absorbent core, more preferably between 20 and 50%. Especially for male persons, this distance is preferably sufficiently large such that urine is captured mainly in the area between the first front attachment zone and the second front attachment zone. 
     The first front attachment zone and the second front attachment zone may be substantially parallel and may extend in a longitudinal direction of the absorbent core; or an angle between the first front attachment zone and a longitudinal direction of the absorbent core and an angle between the second front attachment zone and the longitudinal direction of the absorbent core may be smaller than 5°. For example the first and second front attachment zones may diverge in the direction of the first zone. 
     In an exemplary embodiment the fourth zone comprises a second rear attachment zone extending next to the first rear attachment zone, seen in the longitudinal direction, said second rear attachment zone extending preferably into the third zone. Preferably the first rear attachment zone and the second rear attachment zone are arranged symmetrically with respect to a longitudinal center line of the absorbent core. Preferably the distance between the first and the second rear attachment zone is between 10 mm and 50 mm, preferably between 15 mm and 40 mm, more preferably between 20 mm and 30 mm. Preferably the distance between the first and the second rear attachment zone is between 5 and 60% of the width of the absorbent core, more preferably between 10 and 40%. Preferably the first rear attachment zone and the second rear attachment zone are substantially parallel and extend in a longitudinal direction of the absorbent core; or an angle between the first rear attachment zone and a longitudinal direction of the absorbent core and an angle between the second rear attachment zone and the longitudinal direction of the absorbent core is smaller than 5°. For example the first and second rear attachment zones may diverge in the direction of the fifth zone. 
     Preferably a first smallest distance (d 12 ) between the first and the second front attachment zone is bigger than a second smallest distance (d 34 ) between the first and the second rear attachment zone, more preferably at least 10% bigger, even more preferably at least 15% bigger. In that manner the channels formed by the first and the second rear attachment zone will be closer to each other in the center of the crotch region making the absorbent article more agreeable to wear, also when wetted, and will give the absorbent article a tub-shape when wetted, see further. On the other hand the channels created by the first and the second front attachment zone will be further away from each other to obtain a good liquid distribution, especially for male persons. 
     Preferably, the first and the second front attachment zone extend in a longitudinal direction of the absorbent core over a length which is less than the length of the first and second rear attachment zone, more preferably at least 10% less, even more preferably at least 15% less. In that manner the first and the second front attachment zone can extend from the fourth zone into the third zone such that the absorbent article fits better to the body of the wearer. 
     Preferably, the bridging zone extends from a first portion of the absorbent core, preferably in the second or third zone, to a second portion of the absorbent core, preferably in the second or third zone, wherein the first portion is defined between the first side edge and a longitudinal center axis (CL) of the absorbent core and the second portion is defined between the second side edge and the longitudinal center axis (CL) of the absorbent core. 
     Preferably, the length of the first front attachment zone is larger than 30 mm, more preferably larger than 40 mm, even more preferably larger than 50 mm. 
     Preferably, the length of the first rear attachment zone is larger than 30 mm, more preferably larger than 40 mm, even more preferably larger than 50 mm. 
     Preferably, said plurality of attachment zones are permanent attachment zones which remain attached when wetted. 
     Preferably, said plurality of attachment zones extend, seen in the transverse direction of the absorbent core, over the transverse distance which is at least 1 mm, preferably at least 3 mm, more preferably at least 4 mm, even more preferably at least 5 mm, most preferably at least 6 mm. In that manner the channels created upon wetting will be sufficiently wide to cause a good liquid distribution. 
     In an exemplary embodiment, the bridging zone comprises one or more temporary attachments which are configured to detach when wetted. In that manner, upon wetting the one or more temporary attachments may first function to guide a mass flow of the liquid, whereupon, after loosening a capillary flow through the absorbent material is made possible. In a possible embodiment, the bridging zone comprises at least one permanent attachment zone in a direction from the first to the second side edge, e.g. in a transverse direction. 
     Aspects—Connecting Attachment Zone (e.g. U-Shape, O-Shape) 
     According to an aspect of the invention there is provided an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core comprising an absorbent material between a top core wrap sheet and a back core wrap sheet. The absorbent core is positioned in between said topsheet and said backsheet. The absorbent core has a first and second longitudinal edge and a front and rear transverse edge. The absorbent core is provided with a plurality of attachment zones where the top core wrap sheet is attached to the back core wrap sheet. The plurality of attachment zones comprises:
         at least a first and a second elongate attachment zone, said first and second elongate attachment zone extending next to each other from a crotch region in the direction of the front and/or rear transverse edge;   at least one connecting attachment zone connecting said first attachment zone with said second attachment zone.       

     By providing a first and a second elongate attachment zone which are interconnected by at least one connecting attachment zone, upon wetting of the absorbent core two elongate channels are created which are interconnected by at least one interconnecting channel which is in liquid communication with the first and second elongate channel. In that manner, immediately after wetting, liquid can flow from the first elongate channel to the second elongate channel and vice versa, improving the liquid distribution, whereupon the liquid can be absorbed by the absorbent material. 
     According to an exemplary embodiment the at least one connecting attachment zone comprises at least one of:
         a front connecting attachment zone which connects a front end portion of the first attachment zone to a corresponding front end portion of the second attachment zone;   a rear connecting attachment zone which connects a rear end portion of the first attachment zone to a corresponding rear end portion of the second attachment zone.       

     In that manner a good distribution is obtained in the front portion and/or in the back portion. Especially for a male person, it may be desirable to have a front connecting attachment zone. 
     The absorbent core has a transverse crotch line dividing the absorbent core in a front portion and a rear portion on either side of the transverse crotch line. Preferably, the front connecting attachment zone is located in the front portion and/or the rear connecting attachment zone is located in the rear portion. 
     In an exemplary embodiment a connecting attachment zone extends substantially in a transverse direction of the absorbent core. This may be advantageous when the first and second elongate channel extend substantially parallel. In that manner an absorbent core is obtained which may be substantially symmetrical with respect to a longitudinal center axis. In other symmetrical embodiments the connecting attachment zone may be substantially V-shaped or U-shaped, wherein the V-shape or U-shape is arranged such that it is symmetrical with respect to the longitudinal center axis of the absorbent core. 
     In an exemplary embodiment, upon wetting of the absorbent material, a first and second channel are created at said first and second elongate attachment zone, respectively, and the first and second channel are directly connected to each other through the at least one connecting attachment zone; wherein a first, second, and at least one connecting channel are created at said first, second, and at least one connecting attachment zone, respectively. 
     In a preferred embodiment the at least one connecting attachment zone corresponds with at least one permanent attachment zone which remains attached upon wetting, or at least one semi-permanent attachment zone configured to release after having been in contact with liquid for a predetermined period of time, wherein said predetermined period of time is preferably smaller than 30 s. 
     In an exemplary embodiment the at least one connecting attachment zone comprises one or more straight portions, and/or one or more curved portions. 
     In an exemplary embodiment the first attachment zone, the second attachment zone, and the at least one connecting attachment zone collectively form a substantially “U” shaped zone, or a substantially “V” shaped zone. A U-shape or V-shape provides for a good guidance of the liquid. Moreover, with a U-shaped attachment zone sharp angles may be avoided further improving a good liquid transport from a first elongate attachment zone (one leg) of the U-shaped attachment zone to the second elongate attachment zone (the other leg) of the U-shaped attachment zone. Further, with a V-shape, liquid may be guided from e.g. a left and right front portion to a center portion in the crotch region. 
     In an exemplary embodiment, the first attachment zone, the second attachment zone, and the at least one connecting attachment zone collectively delimit a substantially enclosed region. For example, the substantially enclosed region may be a substantially “O” shaped region, or a substantially polygon shaped region, such as a substantially rectangular shaped region, a substantially triangular shaped region, a diamond shaped region, a substantially hexagonal shaped region. In that manner liquid can be distributed around the boundary of the enclosed region, such that it can be absorbed from the entire boundary by the absorbent material in the enclosed region and by the absorbent material in a region surrounding the enclosed region. 
     In an exemplary embodiment, the first attachment zone and the second attachment zone are substantially parallel and extend in a longitudinal direction of the absorbent core. In another exemplary embodiment, an angle between the first attachment zone and a longitudinal direction of the absorbent core and an angle between the second attachment zone and the longitudinal direction of the absorbent core is smaller than 5°. 
     In an exemplary embodiment, the plurality of attachment zones is arranged symmetrically with respect to a longitudinal center axis of the absorbent core extending between the front and rear transverse edge. 
     In an exemplary embodiment, the largest distance between the first and the second attachment zone in the transverse direction is between 15 and 70% of the width of the absorbent core, more preferably between 20 and 50%; wherein preferably the largest distance between the first and the second attachment zone in the transverse direction is between 10 mm and 100 mm, more preferably between 20 mm and 80 mm, even more preferably between 30 mm and 70 mm. 
     In an exemplary embodiment, the first and second attachment zones are permanent attachment zones which remain attached upon wetting, or semi-permanent attachment zones configured to release after having been in contact with liquid for a predetermined period of time, wherein said predetermined period of time is preferably smaller than 30 s. 
     The absorbent core has a first and second transverse edge, wherein the first edge may be the front edge or the rear edge, and the second edge may be the rear edge or the front edge, respectively. The absorbent core has a first portion and a second portion on either side of the transverse crotch line. The first and the second elongate attachment zone extend next to each other, at least in the first portion of the absorbent core in the direction of the first transverse edge. 
     In a first possible embodiment, the plurality of attachment zones may further comprise a third and a fourth elongate attachment zone extending next to each other, at least in the second portion of the absorbent core, in the direction of the second transverse edge. Optionally the third and fourth elongate attachment zone may be connected by a connecting attachment zone. 
     Measured in a transverse direction, a first maximum distance between the first and the second attachment zone is preferably bigger than a second maximum distance between the third and the fourth attachment zone. 
     It is noted that the first transverse edge may be a front edge or a rear edge depending on the desired use of the absorbent article. Similarly, the first portion may be a front portion or a rear portion depending on the desired use of the absorbent article. By having a different distance between the attachment zones in the front portion and in the rear portion, it is possible to tailor the absorbent article to the wearer. For example, for a male person the maximum distance may be larger in the front portion than in the rear portion, whilst for a female person the maximum distance may be larger in the rear portion than in the front portion. Further it is possible to optimize the difference between the front and the rear portion for obtaining a unisex absorbent article. 
     In a second possible embodiment, the plurality of attachment zones may further comprise a third attachment zone extending from the crotch region in the direction of the second transverse edge, wherein seen in a projection on a transverse direction the third attachment zone is located between the first and the second attachment zone. By having a first and a second attachment zone in the front or rear portion and a third attachment zone in the rear or front portion, respectively, said third attachment zone being such that it is between the first and the second attachment zone, seen in a projection as defined above, it is possible to tailor the absorbent article to the wearer. For example, for a male person the first and second attachment zone may be in the front portion and the third attachment zone may be in the rear portion, whilst for a female person the first and second attachment zone may be in the rear portion and the third attachment zone in the front portion. Further it is possible to optimize the difference between the front and the rear portion for obtaining a unisex absorbent article. 
     For an embodiment with a third and fourth attachment zone, the first distance between the first and the second attachment zone may be at least 5%, preferably at least 10% bigger, even more preferably at least 20% bigger than a second distance between the third and the fourth attachment zone. This difference may be optimized in function of the desired used. For example, for male persons the difference may be bigger. 
     In an embodiment which is preferred for a male person, the first and the second elongate attachment zone may each have a front end adjacent to absorbent material and a rear end adjacent to absorbent material or on the transverse crotch line. And the third and the fourth elongate attachment zone may each have a rear end adjacent to absorbent material and a front end adjacent to absorbent material or on the transverse crotch line (L). It is noted that the first attachment zone may be connected to the third attachment zone: in that case the rear end of the first attachment zone and the front end of the third attachment zone will be on the transverse crotch line. Similarly, the second attachment zone may be connected to the fourth attachment zone: in that case the rear end of the second attachment zone and the front end of the fourth attachment zone will be on the transverse crotch line. 
     In an embodiment which is preferred for a female person, the first and the second elongate attachment zone may each have a rear end adjacent to absorbent material and a front end adjacent to absorbent material or on the transverse crotch line. And the third and the fourth elongate attachment zone may each have a front end adjacent to absorbent material and a rear end adjacent to absorbent material or on the transverse crotch line (L). It is noted that the first attachment zone may be connected to the third attachment zone: in that case the front end of the first attachment zone and the rear end of the third attachment zone will be on the transverse crotch line. Similarly, the second attachment zone may be connected to the fourth attachment zone: in that case the front end of the second attachment zone and the rear end of the fourth attachment zone will be on the transverse crotch line. 
     For an embodiment with a central third attachment zone (instead of a third and fourth attachment zone) which is preferred for a male person, the first and the second elongate attachment zone may each have a front end adjacent to absorbent material and a rear end adjacent to absorbent material or on the transverse crotch line. And the third elongate attachment zone may have a rear end adjacent to absorbent material and a front end adjacent to absorbent material or on the transverse crotch line (L). It is noted that the first attachment zone may be connected to the third attachment zone: in that case the rear end of the first attachment zone and the front end of the third attachment zone will be on the transverse crotch line. Similarly, the second attachment zone may be connected to the third attachment zone: in that case the rear end of the second attachment zone and the front end of the third attachment zone will be on the transverse crotch line. 
     For an embodiment with a central third attachment zone which is preferred for a female person, the first and the second elongate attachment zone may each have a rear end adjacent to absorbent material and a front end adjacent to absorbent material or on the transverse crotch line. And the third elongate attachment zone may have a front end adjacent to absorbent material and a rear end adjacent to absorbent material or on the transverse crotch line (L). It is noted that the first attachment zone may be connected to the third attachment zone: in that case the front end of the first attachment zone and the rear end of the third attachment zone will be on the transverse crotch line. Similarly, the second attachment zone may be connected to the third attachment zone: in that case the front end of the second attachment zone and the rear end of the third attachment zone will be on the transverse crotch line. 
     For an embodiment with a third and fourth attachment zone, seen in a projection on the longitudinal direction of the absorbent core, the first and the second attachment zone may extend over a length which is less than the length of the third and fourth attachment zone. To fit better to the body the third and fourth attachment zones which are closer to each other may be longer to extend over a longer pan of the crotch region, for example the third and fourth attachment zones may extend both in the first and the second portion of the absorbent core. Preferably, the first and the second attachment zone extend over a length which is at least 5% less, more preferably at least 10% less than the length of the third and fourth attachment zone. Preferably the first and the second attachment zone extend over a length which is at least 25%, more preferably at least 35%, even more preferably at least 45% of the length of the third and fourth attachment zone. 
     For an embodiment with a third attachment zone, seen in a projection on the longitudinal direction of the absorbent core, the first and the second attachment zone may extend over a length which is less than the length of the third attachment zone. To fit better to the body the third attachment zone may be longer to extend over a longer part of the crotch region, for example the third attachment zone may extend both in the first and the second portion of the absorbent core. Preferably, the first and the second attachment zone extend over a length which is at least 5% less, more preferably at least 10% less than the length of the third attachment zone. Preferably the first and the second attachment zone extend over a length which is at least 25%, more preferably at least 35%, even more preferably at least 45% of the length of the third attachment zone. 
     In preferred embodiments, especially suitable for male persons, the first transverse edge may be a front edge intended to be positioned at a front side of a person, and the second transverse edge may be a rear edge intended to be positioned at a rear side of a person; wherein the first portion of the absorbent core is a front portion and the second portion is a rear portion. 
     In preferred embodiments, especially suitable for female persons, the first transverse edge may be a rear edge intended to be positioned at a rear side of a person, and the second transverse edge may be a front edge intended to be positioned at a front side of a person; wherein the first portion of the absorbent core is a rear portion and the second portion is a front portion. 
     The distance between the first and the second attachment zone may be between 15 and 70% of the width of the absorbent core, more preferably between 20 and 50%. For example, the distance between the first and the second attachment zone may be between 10 mm and 100 mm, more preferably between 20 mm and 80 mm, preferably between 30 mm and 70 mm. 
     The distance between the third and the fourth attachment zone may be between 5 and 60% of the width of the absorbent core, more preferably between 10 and 40%. For example, the distance between the third and the fourth attachment zone may be between 5 mm and 60 mm, more preferably between 10 mm and 50 mm, even more preferably between 15 mm and 40 mm. The length of the first and the second attachment zone may be larger than 5% of the length of the absorbent core; preferably larger than 10%, more preferably larger than 15%, e.g. larger than 20% or even larger than 30% or 40% of the length of the absorbent core. Similarly, the length of the third and the fourth attachment zone may be larger than 5% of the length of the absorbent core; preferably larger than 10%, more preferably larger than 15%. e.g. larger than 20%. Also, for an embodiment with a central third attachment zone, the length of the third attachment zone may be larger than 5% of the length of the absorbent core; preferably larger than 10%, more preferably larger than 15%, e.g. larger than 20%. 
     The length of the third and the fourth attachment zone may be larger than the length of the first and the second attachment zone, preferably at least 10% larger, more preferably at least 20% larger. In a possible embodiment, seen in a projection on a longitudinal direction of the absorbent article, a projection of the first and second attachment zone does not overlap with a projection of the third and fourth attachment zone. However, in other embodiments there may be a partial or even a full overlap. For example, the third and fourth attachment zone may extend in between the first and second attachment zone. 
     In a possible embodiment with a central third attachment zone, seen in a projection on a longitudinal direction of the absorbent article, a projection of the first and second attachment zone does not overlap with a projection of the third attachment zone. However, in other embodiments there may be a partial or even a full overlap. For example, the third attachment zone may extend in between the first and second attachment zone. 
     In a possible embodiment the first attachment zone may be separated from the third attachment zone by absorbent material, and the second attachment zone may be separated from the fourth attachment zone by absorbent material. In that manner a capillary bridge is created between the first and second attachment zones on the one hand and the third and fourth attachment zones on the other hand. 
     In another possible embodiment the first attachment zone may be connected to the third attachment zone through a first semi-permanent attachment zone and the second attachment zone may be connected to the fourth attachment zone through a second semi-permanent attachment zone. Such semi-permanent attachment zones are configured to be detached upon wetting, so that liquid can flow in a transverse direction through the absorbent material of the absorbent core. 
     Preferably, the first, second, third and fourth attachment zones are permanent attachment zones which remain attached upon wetting. Also, in an embodiment without the fourth attachment zone, preferably the first, second, and third attachment zones are permanent attachment zones which remain attached upon wetting. 
     The third attachment zone and the fourth attachment zone may be substantially parallel and extend in a longitudinal direction of the absorbent core; or an angle between the third attachment zone and a longitudinal direction of the absorbent core and an angle between the fourth attachment zone and the longitudinal direction of the absorbent core may be smaller than 5°. Also, in the embodiment with a central third attachment zone, the third attachment zone may extend in a longitudinal direction of the absorbent core; or an angle between the third attachment zone and a longitudinal direction of the absorbent core may be smaller than 5. 
     In an exemplary embodiment, seen in a longitudinal direction of the absorbent article, looking from the front edge to the rear edge, the absorbent core comprises subsequently a first, second, third, fourth and fifth zone. The absorbent core comprises a front portion extending between the front edge and a transverse crotch line of the absorbent core, and a rear portion extending between the rear edge and the transverse crotch line of the absorbent core. The first, second and third zone extend in the front portion of the absorbent core and the fourth and fifth zone extend in the rear portion. 
     Preferably, the at least one connecting attachment zone connecting the first and second elongate attachment zone extend in the second, third or fourth zone. 
     More preferably, the second and/or third zone comprises at least one front connecting attachment zone connecting a first elongate front attachment zone and a second elongate front attachment zone; and/or the fourth zone comprises at least one rear connecting attachment zone connecting a first elongate rear attachment zone and a second elongate rear attachment zone. 
     Preferably, in the first and fifth zone substantially no permanent attachment zones with a liquid guidance or distribution function are present. In other words, the first and fifth zones may comprise small local attachment points provided for other reasons that liquid distribution management. Preferably, the second zone comprises at least a first elongate front attachment zone of the plurality of attachment zones, said first front attachment zone extending from an edge of the first zone in the direction of the third zone. 
     Preferably, at least the fourth zone comprises at least a first rear elongate attachment zone of the plurality of attachment zones, said first rear attachment zone extending from an edge of the fifth zone in the direction of the third zone. 
     Any of the features disclosed above for the “5zone” aspect may also be included in embodiments of the connecting attachment zone aspect. 
     Aspects—Crossing Point (e.g. V-Shape, X-Shape) 
     According to an aspect of the invention, there is provided an absorbent article comprising a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core comprising an absorbent material between a top core wrap sheet and a back core wrap sheet. The absorbent core is positioned in between the topsheet and the backsheet. The absorbent core has a first and second longitudinal edge and a first and second transverse edge. The absorbent core has a longitudinal center line dividing the absorbent core in a first longitudinal portion and a second longitudinal portion on either side of the longitudinal center line, and a transverse crotch line dividing the absorbent core in a front portion and a rear portion on either side of the transverse crotch line. The absorbent core is provided with a plurality of attachment zones where the top core wrap sheet is attached to the back core wrap sheet. The plurality of attachment zones comprises a first and second elongate attachment zone, said first and second elongate attachment zone extending next to each other from a crotch region in the direction of the first and/or second transverse edge. The first elongate attachment zone crosses the longitudinal center line in a first crossing point, from the first longitudinal portion to the second longitudinal portion; and the second elongate attachment zone crosses the longitudinal center line in a second crossing point, from the second longitudinal portion to the first longitudinal portion. The first and second crossing point may be the same point or a different point, and may be located in the front portion or in the rear portion or on the transverse crotch line between connecting the front portion to the rear portion. 
     By providing a first and a second elongate attachment zone which are crossing the longitudinal center line, upon wetting of the absorbent core two elongate channels are created. The first elongate channel extends from a first left position to a second right side, where the first left position is closer to the first transverse edge than the second right position. Similarly, second elongate channel extends from a second right position to a first left position, where the second right position is closer to the first transverse edge than the first left position. In that manner, immediately after wetting, liquid is guided in the first and/or second elongate channel from left to right and/or from right to left, respectively, whilst flowing towards the crotch region or away from the crotch region, improving the liquid distribution, whereupon the liquid can be absorbed by the absorbent material. Further, by making the first and second attachment zones cross the longitudinal center line, the zones may be longer compared to similar zones extending parallel to the longitudinal center line, resulting in a larger liquid distribution zone. 
     Preferably, the first and second crossing point correspond with substantially the same point located on the longitudinal center line. In that manner a connection between the first and the second attachment zone is realized further enhancing the liquid distribution. 
     In another embodiment, the first and second crossing point may be different points, and the first and the second attachment zone may cross each other at a distance of the longitudinal center line. In such an embodiment third and fourth elongate attachment zone arranged symmetrically with respect to the first and second elongate attachment zones may be provided, such that the first and second attachment zone cross each other at one side of the longitudinal center line and the third and fourth attachment zone cross each other at another side of the longitudinal center line. 
     Preferably, the first and/or second crossing point are located at a distance of the transverse crotch line. For example, the first and/or second crossing point may be located in a front portion. In that way the position of the first and/or second can be optimized e.g. in function of whether the absorbent article is intended for a male or female person. However, in other embodiments, the first and/or second crossing point may be located on the transverse crotch line. 
     When at a distance of the transverse crotch line, preferably, the distance between the first and/or second crossing point and the transverse crotch line is larger than 1% of the length of the absorbent core, preferably larger than 2%, even more preferably larger than 3%. 
     In certain embodiments with multiple first crossing points and multiple second crossing points may be provided, wherein these multiple first crossing points may be located a different distances of the transverse crotch line, e.g. two first crossing points, one in the front portion and one in the rear portion, and two second crossing points, one in the front portion (optionally corresponding with the first crossing point in the front portion), and one in the rear portion (optionally corresponding with the first crossing point in the rear portion), see e.g.  FIG. 15P . 
     Preferably, the first elongate attachment zone extends both in the front portion and in the rear portion; and the second elongate attachment zone extends both in the front portion and in the rear portion. In that manner a good liquid distribution from left to right and from front to rear can be obtained. 
     Preferably, the first elongate attachment zone and the second elongate attachment zone are arranged symmetrically with respect to the longitudinal center line of the absorbent core. 
     In an exemplary embodiment a maximum distance between the first and the second elongate attachment zone is between 15 and 70% of the width of the absorbent core, more preferably between 20 and 50%. 
     In an exemplary embodiment a maximum distance between the first and the second attachment zone in the front portion is different from a maximum distance between the first and the second attachment zone in the rear portion. In that manner the liquid distribution zone may be better adapted to the type of person wearing the absorbent article. For example, for a male person, a maximum distance between the distance between the first and the second attachment zone near a front transverse edge may be larger than a maximum distance between the first and the second attachment zone in a rear portion. 
     Preferably, the length of the first and second attachment zone is larger than 10% of the length of the absorbent core, more preferably larger than 30%, even more preferably larger than 50% In an exemplary embodiment the plurality of attachment zones are permanent attachment zones which remain attached when wetted. In certain embodiments, the first attachment zone may be connected to the second attachment zone through a semi-permanent attachment zone, preferably extending in a substantially transverse direction. 
     In an exemplary embodiment at least one of said first and second elongate attachment zone comprises a bridging zone (B) allowing a liquid flow between the first and the second longitudinal edge by capillary action through the absorbent material and/or by mass flow, such that upon wetting of the absorbent material, a front and rear channel are created, wherein the bridging zone extends between said front and rear channel; wherein a minimum distance between said front and rear channel is preferably larger than 3 mm more preferably larger than 5 mm. 
     In an exemplary embodiment, the first and second channel together form a substantially X-shaped zone. Optionally the legs of the “X” may be interrupted to create one or more bridging zones as defined above. 
     In an exemplary embodiment, the bridging zone extends from the first longitudinal portion of the absorbent core to the second longitudinal portion of the absorbent core; wherein optionally said bridging zone comprises one or more temporary attachments between the top and back core wrap sheet which are configured to detach when wetted; and/or wherein said bridging zone comprises at least one permanent attachment zone in a direction from the first to the second side edge; and/or wherein said bridging zone comprises absorbent material. 
     According to an exemplary embodiment, the first and second transverse edge correspond with a front and rear transverse edge, and the plurality of attachment zones further comprises at least one connecting attachment zone connecting said first attachment zone with said second attachment zone. 
     By providing a first and a second elongate attachment zone which are interconnected by at least one connecting attachment zone, upon wetting of the absorbent core two elongate channels are created which are interconnected by at least one interconnecting channel which is in liquid communication with the first and second elongate channel. In that manner, immediately after wetting, liquid can flow from the first elongate channel to the second elongate channel and vice versa, improving the liquid distribution, whereupon the liquid can be absorbed by the absorbent material. 
     According to an exemplary embodiment the at least one connecting attachment zone comprises at least one of:
         a front connecting attachment zone which connects a front end portion of the first attachment zone to a corresponding front end portion of the second attachment zone;   a rear connecting attachment zone which connects a rear end portion of the first attachment zone to a corresponding rear end portion of the second attachment zone.       

     In that manner a good distribution is obtained in the front portion and/or in the back portion. Especially for a male person, it may be desirable to have a front connecting attachment zone. Preferably, the front connecting attachment zone is located in the front portion and/or the rear connecting attachment zone is located in the rear portion. 
     Other features disclosed above for the “connecting attachment” aspect may be combined with embodiments of the “crossing point” aspect. 
     Features Applicable to all Aspects 
     Preferably, a distance between the transverse crotch line (as used/defined above) and a transverse center line extending perpendicular on the longitudinal direction of the absorbent core, through the middle of the absorbent core, is smaller than 10%, more preferably smaller than 5% of the length of the absorbent core. 
     Preferably, the first and/or second and/or third and/or fourth attachment zone each extends, seen in the transverse direction of the absorbent core, over the transverse distance which is at least 1 mm, preferably at least 3 mm, more preferably at least 4 mm, even more preferably at least 5 mm, most preferably at least 6 mm. 
     The length of the first and the second attachment zone may be larger than 30 mm, preferably larger than 40 mm, more preferably larger than 50 mm. The length of the third and the fourth attachment zone may be larger than 30 mm, preferably larger than 40 mm, more preferably larger than 50 mm. In possible embodiments one or more permanent or semi-permanent transverse attachment zones may be provided to further improve the liquid distribution in the transverse direction. In the first and second attachment zone said top core wrap sheet may be attached to said back core wrap sheet through permanent and semi-permanent attachment portions, said semi-permanent portions may be configured to release after having been in contact with liquid whilst said permanent portions may be configured not to release after having been in contact with liquid. In an exemplary embodiment, in a front and/or rear attachment zone the top core wrap sheet is attached to the back core wrap sheet through permanent and semi-permanent attachment portions, said semi-permanent portions being configured to release after having been in contact with liquid whilst said permanent portions are configured not to release after having been in contact with liquid. It is noted that different types of semi-permanent attachment portions may be used in the same absorbent article so as to achieve a gradual loosening of the attachments upon wetting. This is described in detail in patent documents WO2012048879A1 and WO2012048878A1, which are included herein by reference. 
     The absorbent material may comprise cellulosic fluff pulp and/or superabsorbent particles. The absorbent material may be substantially fluffless. 
     Preferably, substantially no absorbent material is present in the plurality of attachment zones. A position and/or shape of one or more attachment zones may be indicated by means of a distinguishable color and/or colored pattern. E.g., a position and/or shape of one or more attachment zones may be indicated by means of a printed ink layer. The distinguishable color and/or colored pattern may be provided on at least one of the topsheet, the top core wrap sheet, the backsheet and the back core wrap sheet. 
     Preferably, the plurality of attachment zones cover together at least 20%, preferably at least 30% more preferably at least 40%, more preferably at least 50%, more preferably at least 60%, more preferably at least 70%, more preferably 80% and more preferably at least 90% of a total length of the absorbent core. The covered length may be realized with the first and second attachment zone alone, or with a combination of a first and second attachment zone and one or more additional attachment zones. For example, first and second adjacent longitudinal attachment zones together with third and fourth adjacent longitudinal attachment zones may extend over at least 30%, preferably at least 40%, preferably at least 50%, more preferably at least 6(0%, more preferably at least 70%, more preferably 80% and more preferably at least 90% of a total length of the absorbent core. This will allow a good distribution over the entire absorbent core as well as a good formation of the channels and the tub-shape upon swelling of the absorbent core. 
     According to a preferred embodiment, outside of the plurality of attachment zones the absorbent core has a maximum thickness; wherein the first and second attachment zone extend through at least 90% of the maximum thickness of the absorbent core, more preferably through 100% of the thickness of the absorbent core such that in the first and second attachment zone substantially no absorbent material is present between the top core wrap sheet and the back core wrap sheet. According to an exemplary embodiment the first attachment zone and the second attachment zone are arranged symmetrically with respect to a longitudinal center line of the absorbent core extending between the first and second transverse edge. 
     According to a preferred embodiment, the attachment between the top core wrap sheet and the back core wrap sheet is in any one or more of the attachment zones is any one of the following or a combination thereof: pressure bonding, thermal bonding, sonic bonding, chemical bonding, adhesive. The attachment may be a direct or indirect attachment. E.g, an adhesive and/or other intermediate material may be inserted between the top core wrap sheet and the back core wrap sheet. For example, a structure or layer having no or less absorption capacity than the absorbent material may be added in between the top core wrap sheet and the back core wrap in the attachment area. 
     According to exemplary embodiment, the first and second attachment zone each have a bottom and a top, wherein the top core wrap sheet is attached to the back core wrap sheet at said bottom, at said top, or between said bottom and said top. 
     In embodiments of the invention the top core wrap sheet and the bottom core wrap sheet may be formed as one integral sheet or may comprise separate portions around the absorbent material. 
     The absorbent article may further comprise a wetness indicator preferably placed between two attachment zones and/or in one or more attachment zones and/or between an attachment zone and an edge of the absorbent core. The wetness indicator may change appearance when contacted with liquid, e.g. wetness indicator may be configured to generate a color change signal that changes appearance when contacted with liquid. The wetness indicator may comprise a composition that changes appearance when contacted with liquid, in particular a composition comprising a pH indicator and/or a water soluble dye. The composition may comprise a stabilizer, a colorant, and a matrix. 
     The absorbent article may also comprise an acquisition layer as additional layer, configured to quickly acquire the liquid away from the topsheet so as to provide a good dryness for the wearer. Such an acquisition layer may be placed directly under the topsheet. The absorbent article may also comprise a distribution layer typically placed between the acquisition layer and the absorbent core. The acquisition and distribution layer may also be formed as one integral layer. The acquisition layer may comprise a non-woven material, for example a SMS or SMMS material, comprising a spunbonded, a melt-blown and a further spunbonded layer or alternatively a carded chemical-bonded nonwoven. 
     In an embodiment, the width of the first and second attachment zone (measured in in a transverse direction of the absorbent core) may be different from the width of the third and fourth attachment zone. Also the width of any one of the attachment zones may vary along a longitudinal direction of the absorbent core. 
    
    
     
       BRIEF DESCRIPTION OF FIGURES 
       The accompanying drawings are used to illustrate presently preferred non-limiting exemplary embodiments of devices of the present invention. The above and other advantages of the features and objects of the invention will become more apparent and the invention will be better understood from the following detailed description when read in conjunction with the accompanying drawings, in which: 
         FIG. 1A  is a perspective view of an exemplary embodiment of a diaper; 
         FIG. 1B  is a top plan view of the diaper of  FIG. 1A ; 
         FIG. 1C  is a schematic cross-section along line C-C of  FIG. 1B ; 
         FIG. 1D  is a schematic cross-section along line D-D of  FIG. 1B ; 
         FIG. 2A  is a perspective view of an exemplary embodiment of a diaper; 
         FIG. 2B  is a top plan view of the diaper of  FIG. 2A : 
         FIGS. 3-8  are perspective view of other exemplary embodiments of a diaper; 
         FIGS. 9A and 9B  are cross-sectional views illustrating the effect of liquid being absorbed by the absorbent core of an exemplary embodiment of an absorbent article; and 
         FIG. 10  illustrates schematically an exemplary embodiment of a method and apparatus for manufacturing an absorbent article; 
         FIG. 10A  shows a cross section of an insert placed at a non-suction zone of the exemplary embodiment of  FIG. 10 ; 
         FIG. 10B  shows a top view indicating how inserts may be positioned in order to create non-suction zones for the exemplary embodiment of  FIG. 10 ; 
         FIG. 10C  shows a cross section of the absorbent core when the second sheet  120  is being applied; 
         FIG. 10D  shows a cross section of the absorbent core before attaching the first sheet  110  to the second sheet  120 ; 
         FIGS. 10E-10H  illustrate an alternate method for manufacturing an absorbent article, wherein  10 E shows glue application to the bottom core wrap. IOF shows glue application to the top core wrap,  10 G shows the combined bottom and top core wraps, and IOF shows the absorbent article after the manufacturing steps. 
         FIG. 11A  shows a top view of an exemplary embodiment of an absorbent core with four attachment zones using a first exemplary embodiment of a sealing pattern; 
         FIG. 11B  shows a top view of an exemplary embodiment of an absorbent core with four attachment zones using a second exemplary embodiment of a sealing pattern: 
         FIG. 11C  shows a top view of an exemplary embodiment of an absorbent core with four attachment zones using a third exemplary embodiment of a scaling pattern; 
         FIG. 11D  illustrates a fourth exemplary embodiment of a possible sealing pattern; 
         FIG. 11E  illustrates a fifth exemplary embodiment of a possible sealing pattern: 
         FIG. 12  is a perspective view of an exemplary embodiment of a diaper in a wetted state; 
         FIGS. 13A and 13B  are cross-sectional views illustrating the effect of liquid being absorbed by a traditional absorbent core and liquid being absorbed by an absorbent core according to an exemplary embodiment of the invention, respectively: 
         FIG. 14  illustrates a schematic cross-section of an absorbent core, wherein three possible locations are indicated for the attachment zones: 
         FIGS. 15A-15X  illustrate exemplary embodiments of an absorbent core according to the invention; 
         FIGS. 16A-16S  illustrate other exemplary embodiments of an absorbent core according to the invention; 
         FIGS. 17A-17V  illustrate yet other exemplary embodiments of an absorbent core according to the invention; 
         FIGS. 18A-18G  illustrate yet other exemplary embodiments of an absorbent core according to the invention; 
         FIGS. 19A-19D  illustrate yet other exemplary embodiments of an absorbent core according to the invention; 
         FIGS. 20A-20Z  illustrate yet other exemplary embodiments of an absorbent core according to the invention; 
         FIGS. 21A-21Z  illustrate yet other exemplary embodiments of an absorbent core according to the invention; 
         FIGS. 22A-22Z  illustrate yet other exemplary embodiments of an absorbent core according to the invention; 
         FIGS. 23A-23V  illustrate yet other exemplary embodiments of an absorbent core according to the invention; 
         FIGS. 24A-24C  are photographs of an exemplary embodiment of a diaper in a dry and wetted state; 
         FIGS. 25A-25Z  illustrate yet other exemplary embodiments of an absorbent core according to the invention; and 
         FIGS. 26A-26T  illustrate yet other exemplary embodiments of an absorbent core according to the invention; 
         FIGS. 27A and 27B  illustrate another exemplary embodiment of an absorbent article according to the invention; 
         FIGS. 28A-28F  illustrate different embodiments of a top core wrap sheet  110  and/or bottom core wrap sheet  120  of an absorbent core; 
         FIGS. 28-35  illustrate yet other exemplary embodiments of an absorbent core according to the invention; 
         FIGS. 36A-36P  illustrate yet other exemplary embodiments of an absorbent core according to the invention; 
         FIG. 37  illustrates schematically another exemplary embodiment of a method and apparatus for manufacturing an absorbent article; 
         FIG. 38  shows a cross section of a first exemplary embodiment of a first roller brush being applied above the first sheet material; 
         FIG. 39  shows a cross section of a second exemplary embodiment of a first roller brush being applied above the first sheet material; 
         FIG. 40  shows a cross section of a third exemplary embodiment of a first roller brush being applied above the first sheet material: 
         FIG. 41  shows a cross section of an exemplary embodiment of an air jet system being applied above the first sheet material. 
         FIG. 42A-B  show schematically other exemplary embodiments of a method and apparatus for manufacturing an absorbent article comprising a second roller brush. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Definitions 
     As used herein, the following terms have the following meanings: 
     “A”, “an”, and “the” as used herein refers to both singular and plural referents unless the context clearly dictates otherwise. By way of example, “an edge barrier” refers to one or more than one edge barrier. 
     “About” as used herein referring to a measurable value such as a parameter, an amount, a temporal duration, and the like, is meant to encompass variations of +/−20% or less, preferably +/−10% or less, more preferably +/−5% or less, even more preferably +/−1% or variations are appropriate to perform in the disclosed invention. However, it is to be understood that the value to which the modifier “about” refers is itself also specifically disclosed. 
     “Absorbent article”, “absorbent garment”, “absorbent product”, “absorbing article”, “absorbing garment”. “absorbing product” and the like as used herein are used interchangeably and refer to devices that absorb and contain bodily exudates, and more specifically, refers to devices that are placed against or in proximity to the body of the wearer to absorb and contain the various liquids discharged from the body. Absorbent articles include but are not limited to feminine hygiene garments, baby diapers and pants, adult incontinence garments, various diaper and pants holders, liners, towels, absorbent inserts and the like. 
     “Absorbent core” as used herein refers to a three-dimensional part of the absorbent structure, comprising liquid-absorbing material, useful to permanently absorb and/or retain bodily exudates. “Absorbent component” as used herein refers to a structural constituent of an absorbent article. e.g., a piece of an absorbent core, such as one of multiple pieces in a multi-piece absorbent core. “Absorbent element” as used herein refers to a part of a functional constituent of an absorbent structure. e.g., a acquisition layer, a dispersion layer, core layer or a release structure formed of a material or materials having particular liquid handling characteristics suitable for the specific function. 
     “Absorbent fibrous polymer material” as used herein refers to an absorbent polymer material which is in threadlike from such as fibers, filaments, and the like so as to be less flowable in the dry state than particulates. 
     “Absorbent insert” as used herein refers to a device adapted for insertion into an “Absorbent layer” as used herein refers to a term referring to a discrete, identifiable sheet-like or web-like element of an absorbent article which may remain detached and relatively movable with respect to another such element or may be attached or joined so as to remain permanently associated with another such element. Each absorbent layer may itself include a laminate or combination of several layers, sheets and/or webs of similar or diverse compositions. 
     “Absorbent polymer material”, “absorbent gelling material”, “AGM”, “superabsorbent”, “superabsorbent material”, “super absorbent polymer”, “SAP” and the like as used herein are used interchangeably and refer to any suitable particulate (e.g., flaked, particulate, granular, or powdered) or fibrous cross linked polymeric materials that can absorb at least 5 times and preferably at least about 10 times or more its weight of an aqueous 0.9% saline solution as measured using the Centrifuge Retention Capacity test (EDANA 441.2-01). 
     “Absorbent polymer material area” as used herein refers to the area of the absorbent structure wherein adjacent layers are separated by a multiplicity of absorbent polymer material. Incidental contact areas between these adjacent layers within the absorbent particulate polymer material area may be intentional (e.g bond area&#39;s) or unintentional (e.g. manufacturing artifacts). 
     “Absorbent particulate polymer material” as used herein refers to an absorbent polymer material which is in particulate form such as powders, granules, flakes and the like so as to be flowable in the dry state. 
     “Absorption” as used herein refers to the process by which a liquid is taken up within a material. 
     “Absorption rate” as used herein refers to the rate of absorption of liquid, i.e. the amount of liquid which is absorbed per unit of time, typically by an absorbent component, element and/or absorbent layer of the absorbent article, structure and/or core. 
     “Acquisition layer”. “acquisition region”. “acquisition surface” or “acquisition material” and the like as used herein refer to the layer overlying the absorbent core having a faster liquid uptake and/or distribution capability. 
     “Absorbency” is the ability of a material to take up fluids by various means including capillary, osmotic, solvent, chemical and/or other action. 
     “Adult incontinence garment” as used herein refers to absorbent articles intended to be worn by incontinent adults, for absorbing and containing bodily exudates. 
     “Adhesion” as used herein refers to the force that holds different materials together at their interface. 
     “Adhesive” as used herein refers to a material, which may or may not be flowable in solution or when heated, that is used to bond materials together. 
     “Adsorption” as used herein refers to the process by which a liquid is taken up by the surface of a material. 
     “Airlaying” as used herein refers to forming a web by dispersing fibers or particles in an air stream and condensing them from the air stream onto a moving screen by means of a pressure and/or vacuum; a web of fibers produced by airlaying is herein referred to an “airlaid”; an airlaid web bonded by one or more techniques to provide fabric integrity is herein referred to an “airlaid nonwoven”. 
     “Apparent density”. “density” as used herein refers to the basis weight of the sample divided by the caliper with appropriate unit conversions incorporated therein. Apparent density used herein has the unit g/cm3. 
     “Attach”, “attached” and “attachment” as used herein are synonymous with their counterparts of the terms “fasten”, “affix”, “secure”, “bind”, “join” and “link”. 
     “Baby diaper” as used herein refers to absorbent articles intended to be worn by children, for absorbing and containing bodily exudates which the user draws up between the legs and fastens about the waist of the wearer. 
     “Baby pants” as used herein refers to absorbent articles marketed for use in transitioning children from diapers to underwear intended to cover the lower torso of children, so as to absorb and contain body exudates which article is generally configured like a panty garment and manufactured with a completed waist encircling portion, thereby eliminating the need for the user to fasten the article about the waist of the wearer. 
     “Back region” as used herein refers to the portion of an absorbent article or part thereof that is intended to be positioned proximate the back of a wearer. 
     “Backing” as used herein refers to a web or other material that supports and reinforces the back of a product. 
     “Basis weight” is the weight per unit area of a sample reported in grams per square meter, g/m2 or gsm. 
     “Bodily exudates”, “body exudates”, “bodily fluids”. “body fluids”, “bodily discharges”, “body discharges”, “fluid(s)”, “liquid(s)”, “fluid(s) and liquid(s) and the like as used herein are used interchangeably and refer to, but are not limited to urine, blood, vaginal discharges, breast milk, sweats and fecal matter. 
     “Binder”, “adhesive”, “glue”, “resins”, “plastics” and the like as used herein are used interchangeably and refer to substances, generally in a solid form (e.g. powder, film, fiber) or as a foam, or in a liquid form (e.g. emulsion, dispersion, solution) used for example by way of impregnation, spraying, printing, foam application and the like used for attaching or bonding functional and/or structural components, elements and materials, for example including heat and/or pressure sensitive adhesives, hot-melts, heat activated adhesives, thermoplastic materials, chemical activated adhesives/solvents, curable materials and the like. 
     “Bond strength” as used herein refers to the amount of adhesion between bonded surfaces. It is a measure of the stress required to separate a layer of material from the base to which it is bonded. “Capillary action”, “capillarity”, or “capillary motion” and the like as used herein are used to refer to the phenomena of the flow of liquid through porous media. 
     “Chassis” as used herein refers to a foundational constituent of an absorbent article upon which the remainder of the structure of the article is built up or overlaid, e.g., in a diaper, the structural elements that give the diaper the form of briefs or pants when configured for wearing, such as a backsheet, a topsheet, or a combination of a topsheet and a backsheet. 
     “Cellulose fibers” as used herein refers to naturally occurring fibers based on cellulose, such as, for example cotton, linen, etc; wood pulp fibers are one example of cellulose fibers; man-made fibers derived from cellulose, such as regenerated cellulose (rayon), or partially or fully acetylated cellulose derivatives (e.g. cellulose acetate or triacetate) are also considered as cellulose fibers. 
     “Cluster” or the like as used herein refers to an agglomeration of particles and/or fibers. 
     “Chemically stiffened fibers”, chemically modified fibers”, “chemically cross-linked fibers”, “curly fibers” and the like as used herein are used interchangeably and refer to any fibers which have been stiffened by chemical means to increase stiffness of the fibers under both dry and aqueous conditions, for example by way of addition of chemical stiffening agents (e.g. by coating, impregnating, etc), altering the chemical structure of the fibers themselves (e.g. by cross-linking polymer chains, etc) and the like. 
     “Cohesion” as used herein refers to the resistance of similar materials to be separated from each other. 
     “Compartment” as used herein refers to chambers, cavities, pockets and the like. 
     “Comprise,” “comprising,” and “comprises” and “comprised of” as used herein are synonymous with “include”, “including”, “includes” or “contain”, “containing”. “contains” and are inclusive or open-ended terms that specify the presence of what follows e.g. a component and do not exclude or preclude the presence of additional, non-recited components, features, elements, members, steps, known in the art or disclosed therein. 
     “Coverstock” as used herein refers to a lightweight non-woven material used to contain and conceal an underlying absorbent core material; examples are the facing layer or materials that cover the absorbent cores of feminine hygiene garment s, baby diapers and pants and adult incontinence garments. 
     “Crotch region” of an absorbent article as used herein refers to about 50% of the absorbent article&#39;s total length (i.e., in the y-dimension), where the crotch point is located in the longitudinal center of the crotch region. That is, the crotch region is determined by first locating the crotch point of the absorbent article, and then measuring forward and backward a distance of 25% of the absorbent article&#39;s total length. 
     “Cross direction (CD)”, “lateral” or “transverse” and the like as used herein are used interchangeably and refer to a direction which is orthogonal to the longitudinal direction and includes directions within +45° of the transversal direction. 
     “Curing” as used herein refers to a process by which resins, binders or plastics are set into or onto fabrics, usually by heating, to cause them to stay in place; the setting may occur by removing solvent or by cross-linking so as to make them in soluble. 
     “Diaper”, “conventional diaper”, “diaper-like”, “diaper-like garment” and the like as used herein are used interchangeably and refer to disposable absorbent articles, which typically include a front waist portion and a back waist portion which may be releasable connected about the hips of the wearer during use by conventional fasteners such as adhesive tape fasteners or hook and loop type fasteners. In use, the article is positioned between the legs of the wearer and the fasteners are releasable attached to secure the back waist portion to the front waist portion of the diaper, thereby securing the diaper about the waist of the wearer. The front waist portion and a back waist portion are connected by relatively non-stretchable or stretchable members (the term “stretchable” as used herein refers to materials that are extensible when forces are applied to the material, and offer some resistance to extension). Hence, such articles are generally not configured to be pulled up or down over the hips of the wearer when the fasteners are attached. 
     “Dispersion layer”, “dispersion region”, “dispersion surface” or “dispersion material” and the like as used herein refer to the layer overlying the absorbent core having a faster liquid uptake and dispersion capability. 
     “Disposable” is used herein to describe articles that are generally not intended to be laundered or otherwise restored or reused (i.e., they are intended to be discarded after a single use and, preferably, to be recycled, composted or otherwise disposed of in an environmentally compatible manner). 
     “Drylaying” as used herein refers to a process for making a nonwoven web from dry fiber; these terms apply to the formation of carded webs, as well as to the air laying formation of random webs; a web of fibers produced by drylaying is herein referred to as a “drylaid”; a drylaid web bonded by one or more techniques to provide fabric integrity is herein referred to a “drylaid nonwoven”. 
     “Dry strength” as used herein refers to the strength of a joint determined in dry state conditions, immediately after drying under specified conditions or after a period of conditioning in the standard laboratory atmosphere. 
     “Essentially cellulose free”. “substantially fluffless” or “little to no cellulose fibers” as used herein refers to an absorbent article, structure, core component and/or element containing less than 20% by weight cellulosic fibers, less than 10% cellulosic fibers, less than 5% cellulosic fibers, no cellulosic fibers, or no more than an immaterial amount of cellulosic fibers which do not materially affect the thinness, flexibility or absorbency thereof. 
     “Essentially fluffless” or “little to no fluff pulp” as used herein refers to an absorbent article, structure, core, component and/or element containing less than 20% by weight fluff pulp, less than 10% fluff pulp, less than 5% fluff pulp, no fluff pulp, or no more than an immaterial amount of fluff pulp which do not materially affect the thinness, flexibility or absorbency thereof. 
     “Fabric” as used herein refers to a sheet structure made from fibers, filaments and/or yarns. “Feminine hygiene garments” as used herein refer to absorbent hygiene articles intended to be worn by woman, for absorbing and containing body exudates. 
     “Fiber” as used herein refers to the basic threadlike structure from which nonwovens, yarns and textiles are made. It differs from a particle by having a length at least 4 times its width; “Natural fibers” are either of animal (wool, silk), vegetable (cotton, flax, jute) or mineral (asbestos) origin, while “Man-made fibers” may be either polymers synthesized from chemical compounds (polyester, polypropylene, nylon, acrylic etc.) or modified natural polymers (rayon, acetate) or mineral (glass). “Fiber” and “filament” are used interchangeably. 
     “Fluff pulp” or “Pulp fluff” as used herein refers to wood pulp specially prepared to be drylaid. The fibers can be either natural or synthetic or a combination thereof. 
     “Front region” as used herein refers to the portion of an absorbent article or part thereof that is intended to be positioned proximate the front of a wearer. 
     “Garment facing layer” as used herein refers to elements of the chassis that form the outer surface of the absorbent article, such as the backsheet, the side panels, the waist fasteners, and the like, when such elements are present. 
     “Heat activated adhesive” as used herein refers to a dry adhesive that is rendered tacky or fluid by application of heat or heat and pressure to the assembly. 
     “Heat sealing adhesive” as used herein refers to a thermoplastic adhesive which is melted between the adherent surfaces by heat application to one or both of the adjacent adherent surfaces. 
     “High loft” as used herein refers to general term of low density, thick or bulky fabrics. 
     “Hot-melt adhesive” as used herein refers to a solid material that melts quickly upon heating, then sets to a firm bond upon cooling; used for almost instantaneous bonding. 
     “Hydrophilic” as used herein refers to having an affinity for being wetted by water or for absorbing water. 
     “Hydrophobic” as used herein refers to lacking the affinity for being wetted by water or for absorbing water. 
     “Immobilization layer” as used herein refers to a layer able to be applied to the absorbent polymer material or absorbent polymer material area with the intent to gather, bond and/or immobilize absorbent material and/or absorbent layer. 
     “Join”, “joined” and “joining” as used herein refers to encompassing configurations wherein an element is directly secured to another element by affixing the element directly to the other element, as well as configurations wherein the element is indirectly secured to the other element by affixing the element to an intermediate member or members which in turn is or are affixed to the other element. 
     “Knitting” as used herein refers to the technique for interlocking loops of fibers with needles or similar devices. 
     “Layer” refers to identifiable components of the absorbent article, and any part referred to as a “layer” may actually comprise a laminate or combination of several sheets or webs of the requisite type of materials. As used herein, the term “layer” includes the terms “layers” and “layered.” 
     “Upper” refers to the layer of the absorbent article which is nearest to and/or faces the wearer facing layer; conversely, the term “lower” refers to the layer of the absorbent article which is nearest to and/or faces the garment facing layer. “Layer” is three dimensional structure with a x dimension width, y dimension length, and z-dimensions thickness or caliper, said x-y dimensions being substantially in the plane of the article, however it should be noted that the various members, layers, and structures of absorbent articles according to the present invention may or may not be generally planar in nature, and may be shaped or profiled in any desired configuration. 
     “Machine direction (MD)”, “longitudinal” and the like as used herein are used interchangeably and refer to a direction running parallel to the maximum linear dimension of the structure and includes directions within ±45′ of the longitudinal direction. 
     “Major surface” as used herein refers to a term used to describe the surfaces of greatest extent of a generally planar or sheet-like structural element and to distinguish these surfaces from the minor surfaces of the end edges and the side edges, i.e., in an element having a length, a width, and a thickness, the thickness being the smallest of the three dimensions, the major surfaces are those defined by the length and the width and thus having the greatest extent. 
     “Mass flow” as used herein refers to the flow of a liquid from one absorbent element or component to another absorbent element or component by channel flow action. 
     “Mechanical bonding” as used herein refers to a method of bonding fibers by entangling them. This can be achieved by needling, stitching with fibers or by the use of high-pressure air or water jets and the like. 
     “Nonwoven” as used herein refers to manufactured sheet, web or batt of directionally or randomly orientated fibers, bonded by friction, and/or cohesion and/or adhesion, excluding paper and products which are woven, knitted, tufted, stitch-bonded incorporating binding yarns or filaments, or felted by wet-milling, whether or not additionally needled. The fibers may be of natural or man-made origin and may be staple or continuous filaments or be formed in situ. Commercially available fibers have diameters ranging from less than about 0.001 mm to more than about 0.2 mm and they come in several different forms: short fibers (known as staple, or chopped), continuous single fibers (filaments or monofilaments), untwisted bundles of continuous filaments (tow), and twisted bundles of continuous filaments (yarn). Nonwoven fabrics can be formed by many processes such as melt blowing, spun bonding, solvent spinning, electrospinning, and carding. The basis weight of nonwoven fabrics is usually expressed in grams per square meter (gsm). 
     “Pant”, “training pant”, “closed diapers”, “prefastened diapers”, “pull-on diapers” and “diaper-pants” and the like as used herein are used interchangeably and refer to absorbent articles which are typically applied to the wearer by first leading the feet into the respective leg openings and subsequently pulling the pants from the feet to waist area over the hips and buttocks of the wearer and which are capable of being pulled up or down over the hips of the wearer. Typically, such articles may include a front waist portion and a back waist portion which may be connected about the hips of the wearer by integral or releasable members. A pant may be preformed by any suitable technique including, but not limited to, joining together portions of the article using refastenable and/or nonrefastenable bonds (e.g., seam, weld, adhesive, cohesive bond, fastener, etc.). A pant may be preformed anywhere along the circumference of the article (e.g., side fastened, front waist fastened). 
     “Polymer” as used herein refers to but is not limited to, homopolymers, copolymers, such as for example, block, graft, random and alternating copolymers, terpolymers, etc. and blends and modifications thereof. Unless otherwise specifically limited, the term “polymer” includes all possible spatial configurations of the molecule and include, but are not limited to isotactic, syndiotactic and random symnmetries. 
     “Rear” as used herein refers to the portion of an absorbent article or part thereof that is intended to be positioned proximate the back of the wearer. 
     “Release structure”, “release region”, “release surface” or “release material” and the like as used herein are used interchangeably and refer to a structure in fluid communication with the absorbent core having a larger relative liquid absorption capacity and/or rate allowing it to quickly take up, temporarily hold and releasing liquids. 
     “Resin” as used herein refers to a solid or semisolid polymeric material. 
     “Thermobonding” as used herein refers to a method of bonding fibers by the use of heat and/or high-pressure. 
     “Thermoplastic” as used herein refers to polymeric materials that have a melting temperature and can flow or be formed into desired shapes on the application of heat at or below the melting point. 
     “Ultrasonic” as used herein refers to the use of high frequency sound to generate localized heat through vibration thereby causing thermoplastic fibers to bond to one another. 
     “Water-absorbing”. “liquid-absorbing”, “absorbent”, “absorbing” and the like as used herein are used interchangeably and refer to compounds, materials, products that absorb at least water, but typically also other aqueous fluids and typically other parts of bodily exudates such as at least urine or blood. 
     “Wearer facing layer” as used herein refers to elements of the chassis that form the inner surface of the absorbent article, such as the topsheet, the leg cuffs, and the side panels, etc., when such elements are present. 
     “Weaving” as used herein refers to the process of interlacing two or more sets of yarns at right angles to form a fabric; a web of fibers produced by weaving is herein referred to as a “woven”. 
     “Web material” as used herein refers to an essentially endless material in one direction, i.e. the longitudinal extension or the length, or the x-direction in Cartesian coordinates relative to the web material. Included in this term is an essentially unlimited sequence of pieces cut or otherwise separated from an essentially endless material. Often, though not necessarily, the web materials will have a thickness dimension (i.e. the z-direction) which is significantly smaller than the longitudinal extension (i.e. in x-direction). Typically, the width of web materials (they-direction) will be significantly larger than the thickness, but less than the length. Often, though not necessarily, the thickness and the width of such materials is essentially constant along the length of the web. Without intending any limitation, such web materials may be cellulosic fiber materials, tissues, woven or nonwoven materials and the like. Typically, though not necessarily, web materials are supplied in roll form, or on spools, or in a folded state in boxes. The individual deliveries may then be spliced together to form the essentially endless structure. A web material may be composed of several web materials, such as multilayer non-woven, coated tissues, nonwoven/film laminates. Web materials may comprise other materials, such as added binding material, particles, hydrophilizing agents and the like. 
     “Wet burst strength” is a measure of a layer&#39;s ability to absorb energy, when wet and subjected to deformation normal to the plane of the web. 
     “Wet strength” as used herein refers to the strength of a joint determined immediately after removal from a liquid in which it has been immersed under specified conditions of time, temperature and pressure. The term is commonly used in the art to designate strength after immersion in water. 
     “Wetlaying” as used herein refers to the forming a web from an aqueous dispersion of fibers by applying modified paper making techniques; a web of fibers produced by wetlaying is herein referred to as a “wetlaid”. 
     “Wood pulp” as used herein refers to cellulosic fibers used to make viscose rayon, paper and the absorbent cores of products such as feminine hygiene garments, baby diapers and pants and adult incontinence garments. 
     “X-y dimension” as used herein refers to the plane orthogonal to the thickness of the article, structure or element. The x- and y-dimensions correspond generally to the width and length, respectively, of the article, structure or element. 
     “Z-dimension” as used herein refers to the dimension orthogonal to the length and width of the article, structure or element. The z-dimension corresponds generally to the thickness of the article, structure or element. 
     Unless otherwise defined, all terms used in disclosing the invention, including technical and scientific terms, have the meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. By means of further guidance, term definitions are included to better appreciate the teaching of the present invention. 
     The same or similar features and components are indicated with the same reference numerals throughout the figures. 
     As will be illustrated with embodiments of the figures, the absorbent article in accordance with embodiments of the invention can be better tailored to the needs of the wearer, wherein any one or more of the following may be taken into account: sex, age, weight, type of bodily exudates (urine, stool, etc.), pelvis size, etc. Not only for baby diapers but also for adult incontinence absorbent articles, the liquid absorption and management properties can be significantly improved. 
     
       FIGS. 1A-1D 
     
       FIGS. 1A, 1B, 1C and 1D  illustrate an exemplary embodiment of an absorbent article, here a diaper.  FIG. 1B  shows the absorbent article in its flat out, un-contracted state with the wearer side facing the viewer. The skilled person understands that the absorbent article may also be a pant or an adult incontinence garment or the like. The absorbent article  100  comprises a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core  130  positioned in between the topsheet and the backsheet. The absorbent core  130  comprises absorbent material  105  between a top core wrap sheet  110  and a back core wrap sheet  120 . Absorbent core  130  has a first and second longitudinal edge  131 ,  132  and a first and second transverse edge  133 ,  134 . 
     The absorbent core  130  is provided with a plurality of attachment zones  145 ,  155 ,  165 ,  175  comprising at least a first attachment zone  145  and a second attachment zone  155 . The first and second attachment zones extend next to each other from the crotch region CR in the direction of the first and/or second transverse edge  133 ,  134 . In first and second attachment zone  145 ,  155  the top core wrap sheet  110  is attached to the back core wrap sheet  120 
         along an attachment which extends, seen in a transverse direction of the absorbent core, over a transverse distance which is at least 1 mm, preferably at least 2 mm, more preferably at least 3 mm, most preferably at least 4 mm; and/or   along a discontinuous attachment at a plurality of locations at a distance of each other, seen in the transverse direction of the absorbent core. In that manner, upon wetting of the absorbent material, a first and second channel  140 ,  150  are created at said first and second attachment zone  145 ,  155 , respectively.       

     Absorbent article  100  is provided at said top core wrap sheet with at least a first and a second attachment zone  145 ,  155  located a distance d 12  of each other. In that manner a first and second channel  140 ,  150  formed upon wetting, each extend from a crotch region CR in the direction of the first transverse edge  133 . Preferably the distance d 12  is between 10 mm and 50 mm, more preferably between 15 and 30 mm. Preferably, the length of the first and second channel is substantially the same, more preferably the length l 1  of the first channel and the length l 2  of the second channel is between 60 mm and 140 mm, more preferably between 75 mm and 125 mm. Preferably, the distance between the first attachment zone  145  and the first longitudinal side  131  is between 20 and 30 mm, and the distance between the second attachment zone  155  and the second longitudinal side  132  is between 20 and 30 mm. Preferably, the distance between the first/second attachment zone  145 ,  155  and the transverse edge  133  is between 50 and 125 mm, more preferably between 75 and 115 mm. 
     First channel  140  and second channel  150  are substantially parallel and run in the longitudinal direction of absorbent core  130 . However, it is also possible for first and second channel  140 ,  150  to extend under a small angle with respect to the longitudinal direction of absorbent core  130 . e.g. an angle between 5 and 10°. For example, first and second attachment zone  145 ,  155  (and hence first and second channel  140 ,  150 ) may be diverging slightly outwardly in the direction of first transverse edge  133 . Preferably first channel  140  and second channel  150  are arranged symmetrically with respect to a longitudinal center line CL of absorbent core  130 . 
     Absorbent article  100  is further provided with a third and a fourth channel  160 ,  170  located at a distance d 34  of each other. Third and fourth channel  160 ,  170  each extend from crotch region CR in the direction of second transverse edge  134 . The distance d 12  between first and second channel  140 ,  150  is different from the distance d 34  between third and fourth channel  160 ,  170 . Preferably the distance d 34  is between 25 mm and 80 mm, more preferably between 35 mm and 55 mm. 
     Preferably, the length of the third and fourth channel  160 ,  170  is substantially the same, more preferably the length l 3  of the third channel and the length l 4  of the fourth channel is between 30 mm and 130 mm, more preferably between 30 mm and 70 mm. Preferably, the distance between the third attachment zone  165 /third channel  160  and the first longitudinal side  131  is between 20 and 30 mm, and the distance between the fourth attachment zone  175  and the second longitudinal side  132  is between 20 and 30 mm. Preferably, the distance between the third/fourth attachment zone  165 ,  175  and the transverse edge  134  is between 30 mm and 100 mm, more preferably between 40 mm and 75 mm. 
     Third channel  160  and fourth channel  170  are substantially parallel and run in the longitudinal direction of absorbent core  130 . However, it is also possible for third and fourth channel  160 ,  170  to extend under a small angle with respect to the longitudinal direction of absorbent core  130 , e.g. an angle between 5 and 10°. For example, third and fourth channel  160 ,  170  may be diverging slightly outwardly in the direction of second transverse edge  134 . Preferably third channel  160  and fourth channel  170  are arranged symmetrically with respect to a longitudinal center line CL of absorbent core  130 . 
     Preferably, the distance between an end point  141  of first channel  140  and an end point  161  of third channel  160  is smaller than 25 mm, more preferably smaller than 20 mm. Similarly, preferably, the distance between an end point  151  of second channel  150  and an end point  171  of fourth channel  170  is smaller than 25 mm, more preferably smaller than 20 mm. More preferably, endpoints  141 ,  151 ,  161  and  171  are located on substantially the same transverse line L functioning as a fold line along which the diaper can be folded in two. 
     First, second, third and fourth channel  140 ,  150 ,  160 ,  170  each have a bottom which forms the attachment zone  145 ,  155 ,  165 ,  175 , see  FIG. 1C  and  FIG. 1D . At bottom  145 ,  155 ,  165 ,  175  top core wrap sheet  110  is attached to back core wrap sheet  120 . The width w of the bottom, seen in a transverse direction of absorbent core  130 , is preferably larger than 2 mm, more preferably larger than 3 mm and even more preferable larger than 4 mm. To that end the attachment between top core wrap sheet  110  and the back core wrap sheet  120  may be an attachment extending over a transverse distance which is at least 2 mm, preferably at least 3 mm, more preferably at least 4 mm; and/or the attachment may be a discontinuous attachment in a plurality of locations at a distance of each other, seen in a transverse direction of absorbent core  130 . 
     Preferably the attachment (i.e. the joint) at the bottom between the top core wrap sheet and the back core wrap sheet is realized by any one of the following or a combination thereof: pressure bonding, thermobonding, sonic bonding, chemical bonding, adhesive, mechanical bonding. The attachment/joining may be a direct or indirect attachment/joining. E.g, an adhesive and/or other intermediate material may be inserted between the top core wrap sheet and the back core wrap sheet. For example, a structure or layer having no or less absorption capacity than the absorbent material may be added in between the top core wrap sheet and the back core wrap in the attachment area. 
     Outside of the plurality of channels  140 ,  150 ,  160 ,  170 , absorbent core  130  has a maximum thickness t. Preferably, each channel  140 ,  150 ,  160 ,  170  extends through at least 90% of the maximum thickness of absorbent core  130 , more preferably through 100% of the thickness of absorbent core  130 , such that, in the channel  140 ,  150 ,  160 ,  170 , substantially no absorbent material is present that between top core wrap sheet  110  and back core wrap sheet  120 . It is noted that the channel  140 ,  150 ,  160 ,  170  may be located below and/or above the attachment zones  145 ,  155 ,  165 ,  175 , as will be explained in more detail below with reference to  FIG. 14 . 
     In a possible embodiment the attachment  145 ,  155 ,  165 ,  175  between top core wrap sheet  110  and back core wrap sheet  120 , here at a bottom of each channel  140 ,  150 ,  160 ,  170 , is a semi-permanent attachment configured to release after having been in contact with urine for a predetermined period of time, wherein said predetermined period of time is preferably smaller than 30 s. 
     In another possible embodiment the attachment between top core wrap sheet  110  and back core wrap sheet  120 , here at the bottom of each channel  140 ,  150 ,  160 ,  170 , is a permanent attachment; and absorbent core  130  is configured such that, in a wetted state of absorbent core  130 , the absorbent material extends over bottom  145 ,  155 ,  165 ,  175  of channel  140 ,  150 ,  160 ,  170 . This is illustrated in  FIGS. 9A and 9B  for first and second channels  140 ,  150 . Channels  140 ,  150 ,  160 ,  170  guide urine U or any other aqueous liquid through the side walls of channels  140 ,  150 ,  160 ,  170  into absorbent core  130 . Those side walls create an additional path along which the liquid can flow into absorbent core  130  and enhance the diffusion of the liquid into absorbent core  130 . Also, because of the swelling of the core material of absorbent core  130 , the outer bands of absorbent core  130  will rotate around channels  140 ,  150 ,  160 ,  170  as indicated by arrows A in  FIG. 9B . In that manner the diaper takes the shape of a tub or cup, such that any liquid NL which would not yet be absorbed by the absorbent material  105  is maintained in the tub shape. This results in a better protection against leakage and a diaper fitting perfectly to the body. Hence the diaper of  FIGS. 1A-1D  will create more freedom of movement for the wearer of a wetted diaper. 
     It is clear to the skilled person that the attachment zones may be provided by means of continuous attachments in the transversal direction of the absorbent core and/or continuous attachments in the longitudinal direction of the absorbent core and/or discontinuous attachments in the transversal direction of the absorbent core and/or discontinuous attachments in the longitudinal direction of the absorbent core. 
     Absorbent core  130  has a front portion  130   a  extending at one side of a transverse crotch line which corresponds in this embodiment with fold line L, and a rear portion  130   b  extending at the other side of the transverse crotch line L. First and second channel  140 ,  150  extend at least in front portion  130   a  of absorbent core  130 , and third and fourth channel  160 ,  170  extend at least in rear portion  130   b  of the absorbent core  130 . Preferably the distance d 12  between first and second channel  140 ,  150  in front portion  130   a  is smaller than the distance d 34  between third and fourth channel  160 ,  170  in rear portion  130   b.    
     Absorbent core  130  of  FIGS. 1A and 1B  is preferred for female persons. Absorbent core  130  has a first and second side edge  131 ,  132 , a front edge  133  and a rear edge  134 , wherein the absorbent core  130  is provided with a plurality of attachment zones  140 ,  150 ,  160 ,  170  where the top core wrap sheet is attached to the back core wrap sheet, and where preferably substantially no absorbent material is present. The plurality of attachment zones comprise at least a first and a second elongate attachment zone  140 ,  150  extending next each other, at least in the front portion of the absorbent core in the direction of the front edge  133 , and a third and a fourth elongate attachment zone  160 ,  170  extending next to each other, at least in the rear portion  130   b  of the absorbent core  130 , in the direction of the rear edge  134 . It is noted that the first and second elongate attachment zone  140 ,  150  correspond with the third and fourth elongate attachment zone of claim  1 , and that the third and fourth elongate attachment zone  160 ,  170  correspond with the first and fourth attachment zone of claim  1 . 
     Measured in a transverse direction, a first largest distance d 12  between the first and the second attachment zone  140 ,  150  is smaller than a second largest distance d 34  between the third and the fourth attachment zone  160 ,  170 . Preferably the second distance d 34  is at least 5%, more preferably at least 10% bigger, even more preferably at least 20% bigger than a second distance d 12 . The distance d 34  may be between 15 and 70% of the width of the absorbent core, more preferably between 20 and 50%; wherein preferably the distance d 34  is between 10 mm and 100 mm, more preferably between 20 mm and 80 mm, even more preferably between 30 mm and 70. The distance d 12  is between 5 and 60% of the width of the absorbent core, more preferably between 10 and 40%; wherein preferably the distance d 12  is between 5 mm and 60 mm, more preferably between 10 mm and 50 mm, even more preferably between 15 mm and 40 mm. Due to the specific physiological structure of a female at the genital region, such a pattern has the advantage that liquid can be distributed over substantially the entire absorbent core, and that any leakage risks in various positions of the female wearer can be reduced. 
     The absorbent core  130  comprises a front portion  130   a  extending between the front edge  133  and a transverse crotch line L of the absorbent core  130 , and a rear portion  130   b  extending between the rear edge  134  and the transverse crotch line L of the absorbent core  130 . Preferably a distance between the transverse crotch line L and a transverse center line T extending perpendicular on the longitudinal direction of the absorbent core  130 , through the middle of the absorbent core  130 , is smaller than 10%, more preferably smaller than 5% of the length of the absorbent core  130 . The first and the second elongate attachment zone  140 ,  150  each have a front end  142 ,  152  adjacent to absorbent material and a rear end  141 ,  151  adjacent to absorbent material; and the third and the fourth elongate attachment zone  160 ,  170  each have a rear end  162 ,  172  adjacent to absorbent material and a front end  161 ,  171  adjacent to absorbent material. In other embodiments the first zone  140  may be connected to the third zone  160 , and the second zone  150  may be connected to the fourth zone  170 . 
     Seen in a projection on the longitudinal direction of the absorbent core, preferably the first and the second attachment zone  140 ,  150  extend over a length which is more than the length of the third and fourth attachment zone  160 ,  170 . The length of the first and the second attachment zone  140 ,  150  may be larger than 30 mm, preferably larger than 40 mm, more preferably larger than 50 mm. The length of the third and the fourth attachment zone may be larger than 30 mm, preferably larger than 40 mm, more preferably larger than 50 mm. The first attachment zone  140  and the second attachment zone  150  may be arranged symmetrically with respect to a longitudinal center axis of the absorbent core  130  extending between the front edge  133  and rear edge  134 . Seen in a projection on a longitudinal direction, the first and second attachment zone  140 ,  150  do not overlap with the third and fourth attachment zone  160 ,  170 . However, in other embodiments there may be some overlap. 
     The first attachment zone  140  may be separated from the third attachment zone  160  by absorbent material, and the second attachment zone  150  may be separated from the fourth attachment zone  170  by absorbent material. The absorbent material may comprise cellulosic fluff pulp and/or superabsorbent particles. In some embodiments the absorbent material may be substantially fluffless. 
     In other non-illustrated embodiments, the first attachment zone  140  may also be connected to the third attachment zone  160  through a first semi-permanent attachment zone and the second attachment zone  150  may also be connected to the fourth attachment zone  170  through a second semi-permanent attachment zone. The semi-permanent attachment may be configured to release after having been in contact with urine for a predetermined period of time. 
     The first attachment zone  140  and the second attachment zone  150  may be substantially parallel and extend in a longitudinal direction of the absorbent core  130 ; or an angle between the first attachment zone  140  and a longitudinal direction of the absorbent core  130  and an angle between the second attachment zone  150  and the longitudinal direction of the absorbent core  130  may be smaller than 5° (not illustrated). The third attachment zone  160  and the fourth attachment zone  170  may be substantially parallel and extend in a longitudinal direction of the absorbent core  130 ; or an angle between the third attachment zone  160  and a longitudinal direction of the absorbent core  130  and an angle between the fourth attachment zone  170  and the longitudinal direction of the absorbent core  130  may be smaller than 5° (not illustrated). Seen in a projection on a longitudinal direction of the absorbent core  130 , the plurality of attachment zones together may cover at least 30%, preferably at least 40% of a length of the absorbent core  130 . 
     Preferably the plurality of attachment zones comprise substantially no absorbent material, and may be permanent attachment zones which remain attached when wetted. In other embodiments, in the first and second attachment zone  140 ,  150 , the top core wrap sheet may be attached to the back core wrap sheet through permanent and semi-permanent attachment portions, said semi-permanent portions may be being configured to release after having been in contact with liquid whilst said permanent portions may be configured not to release after having been in contact with liquid. 
     In a possible embodiment, the plurality of channels  140 ,  150 ,  160 ,  170  together cover at least 60%, preferably at least 70% of the length la of absorbent core  130 ; indeed, in the embodiment of  FIG. 1A-1D  the channels cover a length equal to 11+13 which is more than 60% of the length la of absorbent core  130 . 
     The plurality of channels  140 ,  150 ,  160 ,  170  may be indicated with a color and/or with a pattern which is different from the color and/or pattern of topsheet. More in particular the area of the channels may comprise a print allowing a user to visually distinguish the channels. This print may be arranged on the topsheet, on the top core wrap sheet, on the back core wrap sheet, on the backsheet, or on any sheet in between the topsheet and the backsheet, as long as it is visible for a user. As the sheets may be partially transparent, the print may be arranged on a sheet in between the topsheet and the backsheet, as long as it is visible through the topsheet and/or the backsheet. 
     Preferably the print is visible when looking at the topsheet of the diaper. For example, a topsheet area above first and second channels  140 ,  150  may be printed with an ink of a first color and a topsheet area above third and fourth channels  160 ,  170  may be printed with the same color or with a different color. In that manner a user will be able to easily recognize the front and rear portion of a diaper, and will recognize more easily how to put on the diaper. 
     Preferably absorbent core  130  is provided with a plurality of attachment zones  140 ,  150 ,  160 ,  170  where the top core wrap sheet is attached to the back core wrap sheet, and where preferably substantially no absorbent material is present. Seen in a longitudinal direction of the absorbent core  130 , looking from the front edge  133  to the rear edge  134 , the absorbent core  130  comprises subsequently a first, second, third, fourth and fifth zone Z 1 , Z 2 , Z 3 , Z 4 , Z 5 . 
     The absorbent core  130  comprises a front portion  130   a  extending between the front edge  133  and a transverse crotch line L of the absorbent core, and a rear portion  130   b  extending between the rear edge  134  and the transverse crotch line L of the absorbent core  130 . The first, second and third zone Z 1 , Z 2 , Z 3  extend in the front portion  130   a  of the absorbent core and the fourth and fifth zone Z 4 , Z 5  extend in the rear portion  130   b . Preferably, in said first and fifth zone Z 1 , Z 5  substantially no permanent attachment zones are present. However the first and/or fifth zone Z 1 , Z 5  may comprise temporary secondary attachments that loosen upon wetting. The second zone Z 2  comprises a first and a second permanent elongate front attachment zone  130 ,  140 , said first and second front attachment zones  130 ,  140  extending from an edge of the first zone Z 1  in the direction of the third zone Z 3 . 
     The fourth zone Z 4  comprises a first and second rear elongate attachment zone  160 ,  170 , said first and second rear attachment zone extending from an edge of the fifth zone Z 5  in the direction of the third zone Z 3 . At least one of said second, third and fourth zone comprises a capillary bridging zone B allowing a liquid flow F between the first and the second side edge  131 ,  132  by capillary action through the absorbent material. The capillary bridging zone B extends between the first front attachment zone  140  and the first rear attachment zone  160 , such that upon wetting of the absorbent material, a front and rear channel are created at said first front and rear attachment zone  140 ,  160 , respectively, wherein the capillary bridging zone B extends between said front and rear channel. Preferably a minimum distance x between the first front attachment zone  140  and the first rear attachment zone  160  is larger than 3 mm more preferably larger than 5 mm. The capillary bridging zone B further extends between the second front attachment zone  150  and the second rear attachment zone  170 , such that upon wetting of the absorbent material, a front and rear channel are created at said second front and rear attachment zone  150 ,  170 , respectively, wherein the capillary bridging zone B further extends between said front and rear channel. Preferably a minimum distance x between the second front attachment zone  150  and the second rear attachment zone  170  is larger than 3 mm more preferably larger than 5 mm. 
     The use of at least one bridging zone B can improve the structure and integrity of the absorbent article. For example, the use of at least one bridging zone B may improve the formation of a tub-shape upon wetting of the absorbent article, see also  FIG. 12  which shows the absorbent article in the wetted state. In the illustrated embodiment the at least one bridge zone B is located in the crotch region, preferably in the third or fourth zone. 
     The chassis of the diaper  100  in  FIGS. 1A-1D  comprises a liquid pervious topsheet (not shown in  FIGS. 1C and 1D , but the topsheet is a layer above top core wrap sheet  110 ) and liquid impervious backsheet (not shown in  FIGS. 1C and 1D , but the backsheet is a layer below back core wrap sheet  110 ). The topsheet may be attached to the top core wrap sheet  110 . e.g. in the attachment zones  140 ,  150 ,  160 ,  170 . Also, the backsheet may be attached to the back core wrap sheet  120 , e.g. in the attachment zones  140 ,  150 ,  160 ,  170 . Preferably the chassis further includes side panels or ears  210 , elasticized leg cuffs  230  and elastic waist elements (not shown). A front end portion of diaper  100  is configured as a front waist region  100   a . The opposite rear end portion is configured as a back waist region  100   b  of diaper  100 . An intermediate portion of diaper  100  is configured as crotch region CR, which extends longitudinally between first and second waist regions  100   a  and  100   b . Waist regions  100   a  and  100   b  may include elastic waist elements such that they gather about the waist of the wearer to provide improved fit and containment. Crotch region CR is that portion of diaper  100  which, when the diaper  100  is worn, is generally positioned between the wearer&#39;s legs. The periphery of diaper  100  is defined by the outer edges of the diaper  100  in which longitudinal edges  101 ,  102  run generally parallel to a longitudinal axis of diaper  100  and transverse end edges  103 ,  104  run between the longitudinal edges  101 ,  102  generally parallel to a transverse axis of diaper  100 . The chassis also comprises a fastening system, which may include at least one fastening or securing member  212  and at least one landing zone  220 . The various components within diaper  100  may be bound, joined or secured by any method known in the art, for example by adhesives in uniform continuous layers, patterned layers or arrays of separate lines, spirals or spots. Top core wrap sheet, topsheet, back core wrap sheet, backsheet, absorbent material and other components may be assembled in a variety of well-known configurations and are well known in the art. 
     Backsheet covers absorbent core  130  and preferably extends beyond the absorbent core  130  toward longitudinal edges  101 ,  102  and end edges  103 ,  104  of diaper  100  and may be joined with top sheet. Backsheet prevents bodily exudates absorbed by the absorbent core  130  and contained within diaper  100  from soiling other external articles that may contact the wearer, such as bed sheets and undergarments. In preferred embodiments, backsheet is substantially impervious to bodily exudates and comprises a laminate of a nonwoven and a thin plastic film such as a thermoplastic film. Backsheet may comprise breathable materials that permit vapor to escape from diaper  100  while still preventing bodily exudates from passing through backsheet. It may be semi-rigid, non-elastic and can be made fully or partially elasticized and include backing. 
     The top sheet which is located above the top core wrap sheet  110 , is preferably soft, exhibits good strikethroughs and has a reduced tendency to rewet from the liquid absorbent material. Top sheet may be semi-rigid and non-elastic, or may be fully or partially elasticized. Topsheet is intended to be placed in close proximity to the skin of the wearer when diaper  100  is worn. Topsheet permits bodily exudates to rapidly penetrate it so as to flow more quickly toward absorbent core  130  via a top surface thereof and via the plurality of channels  140 ,  150 ,  160 ,  170 , preferably not allowing such bodily exudates to flow back through topsheet. Topsheet may be constructed from any one of a wide range of liquid and vapor permeable, preferably hydrophilic, materials. The upper and lower surface of topsheet may be treated differently. Topsheet may include e.g. a surfactant on the upper surface so as to facilitate liquid transfer there through, especially at a central zone or area of topsheet located over absorbent core  130 , and/or a hydrophobic agent on the lower surface to minimize the liquid contained within absorbent core  130  from contact wetting topsheet thereby reducing rewet values. Topsheet may be coated with a substance having rash preventing or rash reducing properties. Preferably, topsheet covers substantially the entire wearer facing area of diaper  100 , including substantially all of front waist region  100   a , back waist region  100   b , and crotch region CR. Optionally, side panels  210 ,  210 ′ and/or waist feature layers of the inner region may be formed from the same single topsheet material. Alternatively, topsheet may be formed from multiple different materials which vary across of topsheet. Such a multiple piece design allows for creation of preferred properties and different zones of the topsheet. 
     Absorbent core  130  may comprise any absorbent material that is generally compressible, conformable, non-irritating to the wearers skin, and capable of absorbing and retaining bodily exudates. Absorbent core  130  may comprise a wide variety of liquid absorbent materials commonly used in absorbent articles. Preferably, absorbent core  130  comprises fluff material, typically cellulosic fluff pulp. However, in other embodiments, absorbent core  130  may be substantially fluffless and comprise superabsorbent polymers. Also, absorbent core  130  may comprise a combination of cellulosic fluff pulp and superabsorbent polymers. Absorbent core  130  may be configured to extend substantially the full length and/or width of diaper  100 . However, as in the embodiment of  FIGS. 1A-1D , preferably absorbent structure  130  is not coextensive with the entire diaper  100  and is limited to certain regions of diaper  100  including crotch region CR. In various embodiments, the absorbent core  130  extends to the edges of diaper  100  but the absorbent material is concentrated in the crotch region CR or another target zone of the diaper  100 . In  FIGS. 1A-1D , absorbent core  130  is shown as having a substantially rectangular configuration, however, absorbent core  130  may be shaped differently, such as, elliptical, dogbane shaped, T-shaped or I-shaped. More in particular the width of the front portion  130   a  may be smaller than the width of the rear portion  130   b  of the absorbent core. 
     Examples of commonly occurring absorbent materials used for absorbent core  130  are cellulosic fluff pulp, tissue layers, highly absorbent polymers (so called superabsorbents), absorbent foam materials, absorbent nonwoven materials or the like. It is common to combine cellulosic fluff pulp with superabsorbent polymers in an absorbent core. Superabsorbent polymers are water-swellable, water-insoluble organic or inorganic materials capable of absorbing at least about 20 times its weight and in an aqueous solution containing 0.9 weight percent of sodium chloride. 
     Diaper  100 ) may also utilize a pair of containment walls or cuffs  230 . Each cuff  230  is a longitudinally extending wall structure preferably positioned on each side of absorbent core  130  and spaced laterally from the center line CL. Preferably, cuffs  230  are attached, for example, by adhesive or sonic bonding to the lower structure. Preferably, cuffs  230  are equipped with elastic members. When released or otherwise allowed relaxing, the elastic members retract inwardly. When diaper  100  is worn, the elastic members function to contract cuffs  230  about the buttocks and the thighs of the wearer in a manner, which forms a seal between diaper  100 , the buttocks and the thighs. 
     The waist regions  100   a  and  100   b  each comprise a central region and a pair of side panels or ears  210 ,  210 ′ which typically comprise the outer lateral portions of the waist regions. These side panels  210 ,  210 ′ may be unitary with the chassis or may be attached or joined thereto by any means know in the art. Preferably, the side panels  210  positioned in the back waist region  100   b  are flexible, extensible and/or elastic in at least the lateral direction. In another embodiment the side panels  210  are non-elastic, semi-rigid, rigid and/or stiff. In order to keep diaper  100  in place about the wearer, preferably at least a portion of the back waist region  100   b  is attached by fastening or securing members  212  to at least a portion of the front waist region  100   a . The fastening or securing members  212  may be e.g. adhesive, mechanical fasteners, hook and loop features, conceivable strings and/or combinations thereof. The fastening or securing members  212  may also be co-adhesive such that they adhere to each other but not other materials. Preferably the materials making up the fastening or securing members  212  are flexible, extensible and/or elastic, allowing them to better conform to the shape and movements of the body and thus, to reduce the likelihood that the fastening system will irritate or injure the wearer&#39;s skin. Alternatively, the absorbent article may be pants and the like. In this configuration, the absorbent article may or may not have fastening members. 
     Diaper  100  may also employ additional layers, such as an acquisition layer and/or dispersion layer situated between topsheet and absorbent core  130 , and/or coverstock layers, and/or other layers situated between absorbent core  130  and backsheet. An acquisition layer and/or dispersion layer serves to slow down the flow so that the liquid has adequate time to be absorbed by absorbent core  130 .  FIGS. 9A and 9B  show an acquisition layer  190  above top core wrap layer  110 . 
     Diaper  100  may also include such other features, components and elements as are known in the art including waistbands, waist cap features, elastics and the like to provide better fit, containment and aesthetic characteristics. These features may be assembled in a variety of well-known configurations and are well known in the art. 
     
       FIGS. 2A and 2B 
     
       FIGS. 2A and 2B  illustrate another exemplary embodiment of a diaper  100 . Diaper  100  comprises a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core  130  positioned in between topsheet and backsheet. Absorbent core  130  has a first and second longitudinal edge  131 ,  132  and a first and second transverse edge  133 ,  134 . Absorbent article  100  is provided at the top core wrap sheet  110  with a first and a second attachment zone  145 ,  155  for creating a first and second channel  140 ,  150  located a distance d 12  of each other. First and second channel  140 ,  150  each extend from a crotch region CR in the direction of the first transverse edge  133  and the second transverse edge  134 . In this embodiment, preferably, first and second channel extend over more than 80% of the length of absorbent core  130 . Preferably the distance d 12  is between 10 mm and 50 mm, more preferably between 15 and 30 mm. Preferably, the length of the first and second channel is substantially the same, more preferably the length l 1  of the first channel and the length l 2  of the second channel is between 100 mm and 300 mm, more preferably between 100 mm and 250 mm. Preferably, the distance between the first/second attachment zone  145 ,  155  and the transverse edge  133  is between 50 and 125 mm, more preferably between 75 and 115 mm, and the distance between the first/second attachment zone  145 ,  155  and the transverse edge  134  is between 50 and 125 mm, more preferably between 75 and 115 mm. 
     First channel  140  and second channel  150  are substantially parallel and run in the longitudinal direction of absorbent core  130 . However, it is also possible for first and second channel  140 ,  150  to extend under a small angle with respect to the longitudinal direction of absorbent core  130 , e.g. an angle between 5 and 10°. For example, first and second channel  140 ,  150  may be diverging slightly outwardly in the direction of first transverse edge  133  and may be diverging slightly outwardly in the direction of second transverse edge  134 . Preferably first channel  140  and second channel  150  are arranged symmetrically with respect to a longitudinal center line CL of absorbent core  130 . 
     Absorbent article  100  is further provided with a third and a fourth channel  160 ,  170  located a distance d 34  of each other. Third and fourth channel  160 ,  170  each extend from crotch region CR in the direction of first and second transverse edge  134 . The distance d 12  between first and second channel  140 ,  150  is different from the distance d 34  between third and fourth channel  160 ,  170 . 
     Preferably the distance d 34  is between 25 mm and 85 mm, more preferably between 35 mm and 55 mm. Preferably, the length of the third and fourth channel  160 ,  170  is substantially the same, more preferably the length l 3  of the third channel and the length l 4  of the fourth channel is between 50 mm and 150 mm, more preferably between 60 mm and 140 mm. Preferably, the distance between the third attachment zone  165  and the first longitudinal side  131  is between 10 and 30 mm, and the distance between the second attachment zone  175  and the second longitudinal side  132  is between 10 and 30 mm. 
     Third channel  160  and fourth channel  170  are substantially parallel and run in the longitudinal direction of absorbent core  130 . However, it is also possible for third and fourth channel  160 ,  170  to extend under a small angle with respect to the longitudinal direction of absorbent core  130 , e.g. an angle between 5 and 10°. For example, third and fourth channel  160 ,  170  may be diverging slightly outwardly in the direction of first transverse edge  133  and second transverse edge  134 . 
     Preferably third channel  160  and fourth channel  170  are arranged symmetrically with respect to a longitudinal center line CL of absorbent core  130 . 
     In this embodiment, first, second, third and fourth channel  140 ,  150 ,  160 ,  170  each have a bottom  145 ,  155 ,  165 ,  175 , similar to the bottom illustrated in  FIG. 1C  and  FIG. 1D  for the first embodiment of  FIGS. 1A-1D . At bottom  145 ,  155 ,  165 ,  175  top core wrap sheet  110  is attached to back core wrap sheet  120  as described previously. Outside of the plurality of channels  140 ,  150 ,  160 ,  170 , absorbent core  130  has a maximum thickness t. Preferably, each channel  140 ,  150 ,  160 ,  170  extends through at least 90% of the maximum thickness of absorbent core  130 , more preferably through 100% of the thickness of absorbent core  130 , such that, in the channel  140 ,  150 ,  160 ,  170 , substantially no absorbent material is present that between top core wrap sheet  110  and back core wrap sheet  120 . 
     Absorbent core  130  has a front portion  130   a  extending at one side of a transverse crotch line T. and a rear portion  130   b  extending at the other side of the transverse crotch line T. First, second, third and fourth channel  140 ,  150 ,  160 ,  170  each extend both in front portion  130   a  and rear portion  130   b  of absorbent core  130 . Preferably the distance d 12  between first and second channel  140 ,  150  is smaller than the distance d 34  between third and fourth channel  160 ,  170 , and the length l 1  of first and second channel  140 ,  150  is bigger than the length l 3  of third and fourth channel  160 ,  170 . Such a channel pattern has the advantage that liquid can be distributed over substantially the entire absorbent core  130 , and that any leakage risks in various positions of the wearer can be reduced. 
     The plurality of channels  140 ,  150 ,  160 ,  170  together cover at least 60%, preferably at least 70% of the length la of absorbent core  130 ; indeed, in the embodiment of  FIGS. 1A-1D  the channels cover a length equal to 11 which is more than 70% of the length la of absorbent core  130 . The plurality of channels  140 ,  150 ,  160 ,  170  may be indicated in a color and/or with a pattern which is different from the color and/or pattern of topsheet. More in particular the area of the channels may comprise a print allowing a user to visually distinguish the channels. For example, an area of the topsheet above front portions of channels  140 ,  150 ,  160 ,  170  may be printed with an ink of a first color and an area of the topsheet above rear portions the channels  140 ,  150 ,  160 ,  170  may be printed with a different color. In that manner a user will be able to easily recognize the front and rear portion of a diaper, and will recognize more easily how to put on the diaper. Topsheet, backsheet and absorbent core  130  may have the same features as described above in connection with  FIGS. 1A-1D . 
     
       FIG. 3 
     
       FIG. 3  illustrates a variant of diaper  100  of  FIGS. 1A-1D . The features and characteristics are similar with this difference that a fifth channel  180  is provided in top core wrap sheet  110 , in between third and fourth channel  160 ,  170  and extending along a longitudinal center line of diaper  100 . Further, the first and second channels are slightly longer and extend over transverse fold line L in the direction of second transverse edge  134 . The third and fourth channel are slightly shorter compared to the embodiment of  FIGS. 1A-1D . By the additional channel  180  the distribution of the liquid can be further improved, especially for larger absorbent articles. Preferably, in the plurality of attachment zones  140 ,  150 ,  160 ,  170 ,  180  the top core wrap sheet is attached to the back core wrap sheet, and preferably substantially no absorbent material is present. Seen in a longitudinal direction of the absorbent core  130 , looking from the front edge  133  to the rear edge  134 , the absorbent core  130  comprises subsequently a first, second, third, fourth and fifth zone Z 1 , Z 2 , Z 3 , Z 4 , Z 5 . 
     The absorbent core  130  comprises a front portion  130   a  extending between the front edge  133  and a transverse crotch line L of the absorbent core, and a rear portion  130   b  extending between the rear edge  134  and the transverse crotch line L of the absorbent core  130 . The first, second and third zone Z 1 , Z 2 , Z 3  extend in the front portion  130   a  of the absorbent core and the fourth and fifth zone Z 4 , Z 5  extend in the rear portion  130   b . Preferably, in said first and fifth zone Z 1 , Z 5  substantially no permanent attachment zones are present. However the first and/or fifth zone Z 1 , Z 5  may comprise temporary secondary attachments that loosen upon wetting. 
     The second zone Z 2  comprises a first and a second permanent elongate front attachment zone  130 ,  140 , said first and second front attachment zones  130 ,  140  extending from an edge of the first zone Z 1  in the direction of the third zone Z 3 , and here even into the fourth zone. 
     The fourth zone Z 4  comprises a first, second and third rear elongate attachment zone  160 ,  170 ,  180  said first and second rear attachment zone extending from an edge of the fifth zone Z 5  in the direction of the third zone Z 3 . 
     At least one of said second, third and fourth zone comprises a bridging zone B allowing a liquid flow F between the first and the second side edge  131 ,  132  by capillary action through the absorbent material. The bridging zone B extends between the first front attachment zone  140  and the first rear attachment zone  160 , such that upon wetting of the absorbent material, a front and rear channel are created at said first front and rear attachment zone  140 ,  160 , respectively, wherein the bridging zone B extends between said front and rear channel. Preferably a minimum distance x between the first front attachment zone  140  and the first rear attachment zone  160  is larger than 3 mm more preferably larger than 5 mm. The bridging zone B further extends between the second front attachment zone  150  and the second rear attachment zone  170 , such that upon wetting of the absorbent material, a front and rear channel are created at said second front and rear attachment zone  150 ,  170 , respectively, wherein the bridging zone B further extends between said front and rear channel. Preferably a minimum distance x between the second front attachment zone  150  and the second rear attachment zone  170  is larger than 3 mm more preferably larger than 5 mm. 
     
       FIGS. 4-6 
     
       FIG. 4  illustrates a further variant of diaper  100  of  FIGS. 1A-1D . The features and characteristics are similar with this difference that the first and second channels are slightly longer and extend over transverse fold line L in the direction of second transverse edge  134 , in between third and fourth channel  160 ,  170 . Depending on the shape and size of the absorbent article, the distribution of the liquid and the creation of the cup/tub shape can be further improved by this additional length. Also in  FIG. 4  five zones Z 1 , Z 2 , Z 3 , Z 4 , Z 5  can be distinguished with similar properties as those described above for  FIG. 3 . 
       FIG. 5  illustrates a variant of diaper  100  of  FIG. 4 . The features and characteristics are similar with this difference that first channel  140  is connected to third channel  160  through a first transverse channel portion  147  and that second channel  150  is connected to fourth channel  170  through a second transverse channel portion  157 . In that manner any liquid can flow from the first channel  140  to the third channel  160  and vice versa, and liquid can flow from the second channel  150  to the fourth channel  170  and vice versa, resulting in an even better distribution of the liquid. 
     Also, channel portions  147 ,  157  may help in creating the tub shape upon wetting of the absorbent core  130 . Preferably first and second channel  140 ,  150  extend in a longitudinal direction of absorbent core  130  over a length which is longer than the length of third and fourth channel  160 ,  170 , wherein third and fourth channel extend between crotch region CR and second transverse edge  134  and first and second channel extend between crotch region CR and first transverse edge  133 . Also in  FIG. 5  five zones Z 1 , Z 2 , Z 3 , Z 4 , Z 5  can be distinguished with similar properties as those described above for  FIG. 3 . It is noted that in the embodiment of  FIG. 5  e.g. the channel portions  147 ,  157  could be provided in the form of temporary attachment portions which gradually loosen upon wetting in order to created a bridging zone for a liquid flow from one side edge  131  to the other side edge  132  and vice versa. 
       FIG. 6  illustrates another more basic exemplary embodiment of a diaper  100  according to the invention. Diaper  100  comprises a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core  130  positioned in between topsheet and backsheet. Absorbent core  130  has a first and second longitudinal edge  131 ,  132  and a first and second transverse edge  133 ,  134 . Absorbent article  100  is provided with a first and a second attachment zone for creating a first and a second channel  140 ,  150  located a distance d 12  of each other, upon wetting of the diaper  100 . First and second channel  140 ,  150  each extend from a crotch region CR in the direction of the first transverse edge  133  and the second transverse edge  134 . In this embodiment, preferably, first and second channel extend over more than 80% of the length of absorbent core  130 . Preferably the distance d 12  is between 10 mm and 90 mm, more preferably between 20 mm and 80 mm, even more preferably between 30 mm and 50 mm. Preferably, the length of the first and second channel is substantially the same, more preferably the length l 1  of the first channel and the length l 2  of the second channel is between 100 mm and 350 mm, more preferably between 150 mm and 300 mm. Preferably, the distance between the first channel  140  and the first longitudinal side  131  is between 10 mm and 30 mm, and the distance between the second channel  150  and the second longitudinal side  132  is between 10 mm and 30 mm. Preferably, the distance between the first/second channel  140 ,  150  and the transverse edges  133 ,  134  is between 20 mm and 100 mm, more preferably between 30 mm and 75 mm. 
     First channel  140  and second channel  150  are substantially parallel and run in the longitudinal direction of absorbent core  130 . However, it is also possible for first and second channel  140 ,  150  to extend under a small angle with respect to the longitudinal direction of absorbent core  130 , e.g. an angle between 5 and 10°. For example, first and second channel  140 ,  150  may be diverging slightly outwardly in the direction of first transverse edge  133  and may be diverging slightly outwardly in the direction of second transverse edge  134 . Preferably first channel  140  and second channel  150  are arranged symmetrically with respect to a longitudinal center line CL of absorbent core  130 . 
     First and second channel  140 ,  150  may each have a bottom  145 ,  155 , similar to the bottom illustrated in  FIG. 1C  for the first embodiment of  FIGS. 1A-1D . However, it is noted that the channels  140 ,  150 ,  160 ,  170  may be located below and/or above the attachment zones  145 ,  155 ,  165 ,  175 , as will be explained in more detail below with reference to  FIG. 14 . 
     At the attachment zones  145 ,  155 ,  165 ,  175  top core wrap sheet  110  is attached to back core wrap sheet  120  as described previously. Outside of the plurality of channels  140 ,  150 ,  160 ,  170  absorbent core  130  has a maximum thickness t. Preferably, in the unwetted state, each channel  140 ,  150 ,  160 ,  170  extends through at least 90% of the maximum thickness of absorbent core  130 , more preferably through 100% of the thickness of absorbent core  130 , such that, in the channel  140 ,  150 ,  160 ,  170 , substantially no absorbent material is present between top core wrap sheet  110  and back core wrap sheet  120 . 
     The areas of the channels  140  and/or  150  and/or  160  and/or  170  may be indicated in a color and/or with a pattern which is different from the color and/or pattern of topsheet. More in particular the area of the channels may comprise a print allowing a user to visually distinguish the channels. This print may be arranged on the topsheet, on the top core wrap sheet, on the back core wrap sheet, on the backsheet, or on any sheet in between the topsheet and the backsheet, as long as it is visible for a user. Preferably the print is visible when looking at the topsheet of the diaper. 
     For example, a front portion of the channel  140  and/or  150  and/or  160  and/or  170  may be indicated with an ink of a first color and a rear portion the channels  140  and/or  150  and/or  160  and/or  170  may be indicated with a different color. In that manner a user will be able to easily recognize the front and rear portion of a diaper. Indeed, the user will know that the first color has to be on the left and the second color on the right. Hence he will recognize more easily how to put on the diaper. Topsheet, backsheet and absorbent core  130  may have the same features as described above in connection with  FIGS. 1A-1D . 
     
       FIGS. 7-8 
     
       FIGS. 7 and 8  illustrate baby pants variants of the baby diaper embodiments of  FIGS. 1A and 2A . In the embodiments of  FIGS. 7 and 8  the side panels  210 ,  210 ′ are larger compared to the embodiments of  FIGS. 1A and 2A . It is clear to the skilled person that any embodiment described in view of baby diapers, is applicable in a similar manner to baby pants, mutatis mutandis. 
       FIGS. 10 and 10A -H 
       FIG. 10  illustrates an embodiment of a method for manufacturing an absorbent article according to the invention. The method comprises in a first step guiding a first sheet material  110  along an optional guide roller  5 , and further along a rotating member  10 , wherein a surface  15  of said rotating member  10  is provided with a pattern with suction zones  13 ,  13 ′ and non-suction zones  11 ,  12 ;  11 ′,  12 ′. The first sheet material  110  is shown in a transparent manner to reveal the suction and non-suction zones of the rotating member  10 . The suction zones  13 ,  13 ′ may be provided with holes, and the non-suction zones  11 ,  12 ;  11 ′,  12 ′ are formed of closed material. For example, the non-suction zones  11 ,  12 ;  11 ′,  12 ′ may be provided with inserts as shown in  FIG. 10A . As shown in  FIG. 1A , the inserts  11 ,  12 ;  11 ′,  12 ′, may have a trapezoidal cross section.  FIG. 10B  shows an insert pattern with four non-suction zones  11   a ,  11   b ,  12   a ,  12   b  per absorbent core. The inserts may be fixed e.g. with screws on the rotating member  10 . At an inner area of the rotating member  10  a vacuum is applied, see VACUUM  1 . The non-suction zones  11 ,  12 ;  11 ′,  12 ′ comprise at least a first elongate zone  11 ,  11 ′ and a second elongate zone  12 ,  12 ′ extending in a circumferential direction of the rotating member  10 . In a second step an absorbent material F is applied via a hopper  40  on said first sheet material  110  on the rotating member  10  such that the suction zones  13 ,  13 ′ are covered with absorbent material and substantially no absorbent material is present on the non-suction zones  11 ,  12 ;  11 ′,  12 ′. In a third step a second sheet material  120  is applied on top of the absorbent material on the first sheet material  110 . e.g. using a further rotating member  20 . This is shown also in  FIG. 10C  where a cross section through the absorbent core is shown during the application of the second sheet material  120 .  FIG. 10D  shows the cross section of the absorbent core downstream of rotating member  10 . One of said first and second sheet material is a top core wrap sheet material, and the other one is a back core wrap sheet material. In the illustrated embodiment it is assumed that the first sheet material  110  is the top core wrap sheet material. In a fourth step the first sheet material  110  is attached to the second sheet material  120  at least in the areas where substantially no absorbent material is present, and such that at least a first and a second channel  140 ,  150  are formed in said top core wrap sheet material  110 . The attaching may be done by applying pressure and heat on the top core wrap sheet material  110  and/or on the back core wrap sheet material  120  in the areas where substantially no absorbent material is present, e.g. by a rotating member  30  and/or opposite rotating member  30 ′ which is provided with at least a first and a second seal rib  31 ,  32  dimensioned for applying pressure and heat on the top core wrap sheet material  110  in the areas where substantially no absorbent material is present in order to create the first and second channel  140 ,  150 , respectively. 
     While the above-described method of manufacturing absorbent articles has good results, the top core wrap sheet and the back core wrap sheet may not be sufficiently strongly attached to one another, especially in cases where a significant amount of liquid is absorbed. Therefore, it may be desirable to additionally use a binder, such as glue, to strengthen the bond between the top and back core wrap sheets. 
     It is however inadvisable to apply this binder to the entire surface area of the wrap sheet being guided over rotating member  10 , since this may lead to the absorbent material and/or binder contaminating the attachments zones  140 ,  150 ,  160 ,  170 , and therefore hindering the formation of channels. 
     Therefore it is advantageous to use a specific method to apply the glue to the back and/or top wrap sheets. In  FIGS. 10E-10H , a manufacturing method including application of a binder is demonstrated which does not have this drawback. 
     In particular, taking as an example the possible manufacturing process for the embodiment of  FIGS. 1A and 1B , while the first sheet material  110  is being guided along an optional guide roller and further along a rotating member a binder, such as glue, may first be applied to the first sheet material, but only in substantially parallel stripes which do not overlap with the intended locations of the attachment zones  140 ,  150 ,  160 ,  170 . Note that in this embodiment, the first sheet material forms the bottom core wrap, but in other embodiments this can also be the top core wrap. The skilled person will be aware of various method of binder/glue application, such as spraying, contact application and so on. 
       FIG. 10E  shows a possible pattern for the application of glue to the first sheet material, which will be the back core wrap. In particular, in this example there are three stripes  111 ,  111 ′,  111 ″, but a different number of substantially parallel stripes, either continuous, intermittent and/or discontinuous in the longitudinal direction, may also be chosen depending on the shape and locations of the attachment zones  140 ,  150 ,  160 ,  170 , which preferably cover a substantial portion of the surface of the bottom core wrap while not overlapping with the intended location of the attachment zones, and preferably while keeping some distance from the intended location of the attachment zones. Although.  FIG. 10E  illustrates an application pattern of stripes, it is clear to the skilled person that the application pattern can be adapted and tuned depending on the intended shape, configuration and location of the one or more attachment zones. Moreover, the skilled person will know how to best adapt the binder application zones on the first and second sheet materials  110 ,  120  for other configurations of attachments zones, such as the ones described in the present application. Preferably, the application of the glue to the bottom core wrap takes place while the bottom core wrap is moved towards the rotating number, and before the absorbent material is added to it. In such a way, the sheet material on the rotating member is already provided with binder, and may subsequently have absorbent material attached thereto via the hopper. 
     Please note that the dotted line indicating the intended location of the attachment zones is there for illustrative purposes only; it does not correspond to anything on the first sheet material  110 . 
       FIG. 10F  shows application of glue to the second sheet material  120 , which in this case will become the top core wrap. In this case too the application of the binder preferably happens along substantially parallel stripes  121 ,  121 ′, which preferably are complementary to the stripes on the first sheet material  110 . Preferably, the application of glue to the top core wrap sheet happens at a distance from hopper  40 , to minimize the chance of contamination, i.e. absorbent material sticking to the areas that are to become attachment zones  140 ,  150 ,  160 ,  170 . For instance, the binder may be applied before or while the sheet material is guided along further rotating member  20 . Note that here, too, the dotted lines merely indicate the intended position of the attachment zones  140 ,  150 ,  160 ,  170 ; they do not indicate any interruption or change in the binder application. As before, the skilled person will be aware of various method of binder/glue application, such as spraying, contact application and so on. 
       FIG. 10G  shows the result after the third step described above has taken place, i.e. after the second sheet material  120 , which here is the top core wrap sheet, is applied on top of the absorbent material on the first sheet material  110 , e.g. using a further rotating member  20 . Note that the pattern fill indicates the presence of binder, and not the presence of absorbent material, since the absorbent material will not be present in the areas indicated by the dotted lines. These areas will be bonded together in a fourth step such as described above, such that channels  140 ,  150 ,  160  and  170  are formed in said back core wrap sheet materials  110  and/or  120 , for instance by applying pressure and heat on the back core wrap sheet material  110  and/or on the top core wrap sheet material  120  in the areas where substantially no absorbent material is present, e.g. by a rotating member  30  and/or opposite rotating member  30 ′ which is provided with at least a first and a second seal rib  31 ,  32  dimensioned for applying pressure and heat in between the core wrap sheet materials  110  and  120  in the areas where substantially no absorbent material is present in order to create the channels  140 ,  150 ,  160  and  170 . 
     Finally,  FIG. 10H  shows the absorbent article resulting from the above-described method, in which a further step has taken place of traversal sealing in bands  122 ,  122 ′ by chemical, thermal or physical binding such as for in stance glue, heat and/or pressure, which prevents the core from opening up and the front and the back. Note that this step of transversal sealing may also take place prior to the fourth step. 
     The above-described method may yield an absorbent article with higher dry and especially wet integrity and which avoids unwanted migration of absorbent material, while avoiding the risk of contamination in the attachment zones  140 ,  150 ,  160  and  170  which may impede the formation of channels. The skilled person will understand that this method is not limited to this particular configuration of attachment zones and will know how to best adapt the binder application zones on the first and second sheet materials  110 ,  120  for other configurations, such as the ones described in the present application. More in particular the skilled person understands that the method is also useful for absorbent cores with only one attachment zone or with more than two attachment zones. 
     
       FIGS. 11A-11E 
     
       FIG. 11A  illustrates an exemplary embodiment of an absorbent core  130  with four attachment zones creating channels  140 ,  150 ,  160 ,  170 . In the embodiment of  FIG. 11A , the attachment zones are formed by welding the top core wrap sheet  110  to the back core wrap sheet  112 . This welding may be done according to a predetermined sealing pattern. In the embodiment of  FIG. 11A , the pattern consists of a plurality of discrete shapes  143 , here a plurality of squares. Preferably, the discrete shapes  143  have dimensions smaller than 2 mm. Preferably, the distance between adjacent discrete shapes is between 0.5 and 3 mm. 
       FIG. 11B  illustrates another exemplary embodiment of a sealing pattern that may be used in an embodiment of the invention. Here the pattern consists of a plurality of discrete shapes in the form of rounded elements  143 . The rounded elements may have a length dimension between 0.5 mm and 5 mm, and a width dimension between 0.5 mm and 5 mm. Preferably, the discrete shapes are equally distributed in the attachment zones. 
       FIG. 11C  illustrates yet another embodiment where the sealing pattern consists of discrete shapes which are rounded. In this embodiment, three columns of rounded discrete elements  143  are used for each attachment zone  140 ,  150 ,  160 ,  170 . 
       FIG. 11D  illustrates another exemplary embodiment of an attachment zone for creating a channel  140 ,  150 ,  160 ,  170 . In this embodiment, the attachment zone is formed by a plurality of continuous line-shaped attachments  140   a ,  140   b ,  140   c . The number of lines used may vary, and may be e.g. two lines or more than three adjacent lines. Preferably, the distance w between a first line  140   a  and a last line  140   c  is at least 1 mm, more preferably at least 2 mm, even more preferably more than 4 mm. 
     In the exemplary embodiment of  FIG. 11E , the attachment zones creating channels  140 ,  150 ,  160 ,  170  may be formed of a plurality of discrete elements  143 , wherein each discrete element has a width w which covers the entire width w of the attachment zone. 
       FIGS. 13A-B  and  12   
       FIG. 13A  illustrates an exemplary embodiment of a traditional absorbent core. When a traditional absorbent core absorbs liquid, the core becomes bulky such that the diaper is no longer well adapted to the body. The liquid does not spread evenly but remains in the center of the absorbent core.  FIG. 13B  illustrates an exemplary embodiment of an absorbent core of the invention. Thanks to the attachment zones and associated channels  140 ,  150 ,  160 ,  170 , the liquid is evenly spread, resulting in the formation of tubes  301 ,  302 ,  303  which provide a tub shape to the absorbent core  130 . Such a tub shape adapts perfectly to the body. Further, compared to prior art solutions, the liquid is kept in an improved manner absorbed in the absorbent core  130 , and the risk on leakage is reduced. Also, because of the creation of the channels  140 ,  150 ,  160 ,  170 , the liquid is absorbed faster.  FIG. 12  shows a perspective view of a diaper in the wetted state.  FIG. 12  clearly illustrates the formation of three tubes  301 ,  302 ,  303  giving the diaper a tub shape which is well adapted to the body. Preferably absorbent core  130  is provided with a plurality of attachment zones  140 ,  150 ,  160 ,  170  where the top core wrap sheet is attached to the back core wrap sheet, and where preferably substantially no absorbent material is present. Seen in a longitudinal direction of the absorbent core  130 , looking from the front edge  133  to the rear edge  134 , the absorbent core  130  comprises subsequently a first, second, third, fourth and fifth zone Z 1 , Z 2 , Z 3 , Z 4 , Z 5 . 
     The absorbent core  130  comprises a front portion  130   a  extending between the front edge  133  and a transverse crotch line L of the absorbent core, and a rear portion  130   b  extending between the rear edge  134  and the transverse crotch line L of the absorbent core  130 . The first, second and third zone Z 1 , Z 2 , Z 3  extend in the front portion  130   a  of the absorbent core and the fourth and fifth zone Z 4 , Z 5  extend in the rear portion  130   b . Preferably, in said first and fifth zone Z 1 , Z 5  substantially no permanent attachment zones are present. However the first and/or fifth zone Z 1 , Z 5  may comprise temporary secondary attachments that loosen upon wetting. The second zone Z 2  comprises a first and a second permanent elongate front attachment zone  130 ,  140 , said first and second front attachment zones  130 ,  140  extending from an edge of the first zone Z 1  in the direction of the third zone Z 3 . 
     The fourth zone Z 4  comprises a first and second rear elongate attachment zone  160 ,  170 , said first and second rear attachment zone extending from an edge of the fifth zone Z 5  in the direction of the third zone Z 3 . 
     The first and second rear elongate attachment zones  160 ,  170  extend from the fourth zone into the third zone Z 3  so that an absorbent article is formed that fits well to the body of the wearer. Preferably a distance between the transverse crotch line L and a transverse center line T extending perpendicular on the longitudinal direction of the absorbent core, through the middle of the absorbent core, is smaller than 10%, more preferably smaller than 5% of the length of the absorbent core. 
     The first zone Z 1  extends over a length corresponding with at least 5%, preferably at least 10% of the length la of the absorbent core seen in the longitudinal direction, e.g. between 10% and 20%. The fifth zone Z 5  extends over a length corresponding with at least 10% of the length la of the absorbent core seen in the longitudinal direction, preferably at least 20%, more preferably at least 25%, e.g. between 20% and 40%. 
     Preferably the second, the third and/or the fourth zone Z 1 , Z 2 , Z 3  each extends over a length corresponding with at least 10% of the length la of the absorbent core seen in the longitudinal direction, preferably at least 15%, e.g. between 10% and 20% of the length of the absorbent core. Preferably the first front attachment zone  140  and the second front attachment zone  150  are arranged symmetrically with respect to a longitudinal center axis CL of the absorbent core  130 . Preferably a minimum distance d 12  between the first and the second front attachment zone is between 20 mm and 70 mm, more preferably between 30 mm and 60 mm, even more preferably between 40 mm and 55 mm. As explained in the summary, such a configuration is especially suitable for male persons. 
     Preferably the first rear attachment zone  160  and the second rear attachment zone  170  are arranged symmetrically with respect to the longitudinal center axis CL of the absorbent core. Preferably the distance d 34  between the first and the second rear attachment zone  160 ,  170  is between 10 mm and 50 mm, more preferably between 15 mm and 40 mm, even more preferably between 20 mm and 30 mm. 
     A first smallest distance d 12  between the first and the second front attachment zone  140 ,  150  is bigger than a second smallest distance d 34  between the first and the second rear attachment zone  160 ,  170 . The first and the second front attachment zone  140 ,  150  extend in a longitudinal direction of the absorbent core over a length l 1  which is less than the length l 3  of the first and second rear attachment zone. Preferably, the length l 1  of the first and second front attachment zone  140 ,  150  is larger than 30 mm, more preferably larger than 40 mm, even more preferably larger than 50 mm. 
     The plurality of attachment zones  140 ,  150 ,  160 ,  170  may be permanent attachment zones which remain attached when wetted. The plurality of attachment zones may extend, seen in the transverse direction of the absorbent core, over the transverse distance which is at least 1 mm, preferably at least 3 mm, more preferably at least 4 mm, even more preferably at least 5 mm, most preferably at least 6 mm. 
     
       FIG. 14 
     
       FIG. 14  illustrates an absorbent core  130  comprising an absorbent material  105  between a top core wrap sheet  110  and a back core wrap sheet  120 . The absorbent core has a first and second longitudinal edge  131 ,  132 . The absorbent core  130  is provided with a plurality of attachment zones  145 .  FIG. 14  illustrates that the attachment zones  145  may be positioned at different locations. As illustrated on the left in  FIG. 14 , the attachment zone may be positioned more or less centrally such that an upper channel portion  140   a  and a lower channel portion  140   b  is formed. In an alternative embodiment, the attachment zone  145  may be positioned at the bottom such that an upper channel  140  is created, see the example in the middle of  FIG. 14 . According to yet another embodiment, the attachment zone  145  may be located at the top, such that the channel  140  is formed below top core wrap sheet  110 . The skilled person understands that any variants thereof are also possible, as long as the attachment zones allow the formation of channels upon wetting of the absorbent core  130 . 
     Although the method is illustrated for two channels, the skilled person understands that the method can be adapted for forming three, four or more channels, and in particular for manufacturing any one of the absorbent articles disclosed in the present application. 
       FIGS. 15A-15X, 16A-16S, 17A-17V and 18A -G 
       FIGS. 15A-15X, 16A-16S, 17A-17V and 18A -F illustrate multiple advantageous positions for the attachment zones in an absorbent core according to the invention. Preferably the absorbent core of those examples is provided with a plurality of attachment zones where the top core wrap sheet is attached to the back core wrap sheet, and where preferably substantially no absorbent material is present. Seen in a longitudinal direction of the absorbent core, looking from the front edge to the rear edge, the absorbent core comprises subsequently a first, second, third, fourth and fifth zone Z 1 , Z 2 , Z 3 , Z 4 , Z 5 , as illustrated. The principles about the zones set out above for various embodiments may also be applied in the embodiments of  FIGS. 15A-15X, 16A-16S, 17A-17V and 18A -F. In possible embodiments, although not illustrated, small portions of the attachment zones of  FIGS. 15A-15X, 16A-16S, 17A-17V  may be unattached to create one or more bridging zones. More generally, the bridging zone may comprise one or more temporary attachments between the top and back core wrap sheet which are configured to detach when wetted; and/or at one or more permanent attachment zones in a direction from the first to the second side edge; and/or absorbent material in order to make a transverse capillary flow and/or mass flow possible. According to the exemplary embodiment of  FIG. 15A  the plurality of attachment zones comprises a first attachment zone  140 , a second attachment zone  150 , a third attachment zone  160  and a fourth attachment zone  170 , and a central attachment zone  180 . The first and second attachment zones  140  diverge from the central attachment zone  180  in the crotch region in the direction of a rear transverse edge of absorbent core. The third and fourth attachment zone  160 ,  170  diverge from the central attachment zone  180  in the crotch region in the direction of a front transverse edge of absorbent core. 
     The embodiment of  FIG. 15A  can be used for both male and female. In the embodiment of  FIG. 15A  the first attachment zone  140  and the second attachment zone  150  form together a substantially V-shaped zone. This substantially V-shaped zone comprises a first elongate attachment zone  140 ′ (indicated as a solid fill area), a second elongate attachment zone  150 ′ (indicated as a solid fill area), and a V-shaped connecting attachment zone  1045  (indicated as a hatched area). The first and second elongate attachment zone  140 ′,  150 ′ extend next to each other from the crotch region in the direction of the rear transverse edge  134 . The connecting attachment zone  1045  connects said first elongate attachment zone  140 ′ with said second attachment zone  150 ′. The connecting attachment zone  1045  is a front connecting attachment zone which connects a front end portion of the first attachment zone  140 ′ to a corresponding front end portion of the second attachment zone  150 ′. Similarly, the third attachment zone  160  and the fourth attachment zone  170  form together a substantially V-shaped zone. This substantially V-shaped zone  160 ,  170  comprises a third elongate attachment zone  160 ′, a fourth elongate attachment zone  170 ′, and a V-shaped connecting attachment zone  1065 . The third and fourth elongate attachment zone  160 ′.  170 ′ extend next to each other from the crotch region in the direction of the front transverse edge  133 . The connecting attachment zone  1065  connects said third elongate attachment zone  160 ′ with said fourth elongate attachment zone  170 ′. The connecting attachment zone  1065  is a rear connecting attachment zone which connects a rear end portion of the third attachment zone  160 ′ to a corresponding rear end portion of the fourth attachment zone  170 . The V-shaped zone  160 ,  170  guides the liquid from left and right parts of the front portion. As illustrated the first interconnecting attachment zone  1065  may be arranged in the front portion, and more in particular in the second zone Z 2 , and the second interconnecting attachment zone  1045  may be arranged in the rear portion, and in particular in the fourth zone Z 4 . By connecting the first interconnecting attachment zone  1065  with the second interconnecting attachment zone  1045  in the crotch region with a central longitudinal attachment zone  180  a convenient liquid distribution channel network is created allowing the liquid to be distributed rapidly throughout the absorbent core. 
     According to the exemplary embodiment of  FIG. 15B  the plurality of attachment zones comprises a first attachment zone  140 , a second attachment zone  150 , a third attachment zone  160  and a fourth attachment zone  170 . This embodiment is similar to the embodiment of  FIG. 2A-2B , with this difference that the outer attachment zones  160 ,  170  are longer than the inner attachment zones  140 ,  150 . The embodiment of  FIG. 15B  can be used for both male and female. 
     According to the exemplary embodiment of  FIG. 15C  the plurality of attachment zones comprises a first attachment zone  140 , a second attachment zone  150 , a third attachment zone  160  and a fourth attachment zone  170 , and a central attachment zone  180 . The first and third attachment zones  140 ,  160  are aligned in the longitudinal direction. Also, the second and fourth attachment zones  150 ,  170  are aligned and extend substantially parallel to the first and third attachment zones  140 ,  160 . The embodiment of  FIG. 15C  can be used for both male and female. 
     According to the exemplary embodiment of  FIG. 15D  the plurality of attachment zones comprises a first attachment zone  140  and a second attachment zone  150 . The first and second attachment zones  140  are substantially parallel in the crotch region and diverge in the direction of a front transverse edge of absorbent core. The embodiment of  FIG. 15D  is preferable for female. 
     According to the exemplary embodiment of  FIG. 15E  the plurality of attachment zones comprises a first attachment zone  140  and a second attachment zone  150 . The first and second attachment zones  140  partially overlap in the crotch region and diverge in the direction of a rear transverse edge of absorbent core. The embodiment of  FIG. 15E  is preferable for a female. The embodiment of  FIG. 15E  is preferable for female. 
     In the embodiment of  FIG. 15E  the first attachment zone  140  and the second attachment zone  150  form together a substantially V-shaped zone. This substantially V-shaped zone comprises a first elongate attachment zone  140 ′ (indicated as a solid fill area), a second elongate attachment zone  150 ′ (indicated as a solid fill area), and a V-shaped connecting attachment zone  1045  (indicated as a hatched area). The first and second elongate attachment zone  140 ′,  150 ′ extend next to each other from the crotch region in the direction of the rear transverse edge  134 , and more particularly in the fourth and third zone Z 4  and Z 3 . The connecting attachment zone  1045  connects said first elongate attachment zone  140 ′ with said second attachment zone  150 ′. The connecting attachment zone  1045  is a front connecting attachment zone which connects a front end portion of the first attachment zone  140 ′ to a corresponding front end portion of the second attachment zone  150 ′. The V-shaped zone  140 ,  150  guides the liquid from the front portion to the left and right parts of the rear portion. As illustrated the first interconnecting attachment zone  1045  may be arranged in the front portion and more in particular in the second zone Z 2 . In that manner a convenient liquid distribution channel network is created allowing the liquid to be distributed rapidly throughout the absorbent core. 
     According to the exemplary embodiment of  FIG. 15F  the plurality of attachment zones comprises a first longitudinal attachment zone  140  and a second longitudinal attachment zone  150  which are interconnected by an attachment portion  1045  in a rear portion of the absorbent core. In that manner any leakage via the rear portion can be reduced or avoided. The embodiment of  FIG. 15F  is preferable for female. 
     In the embodiment of  FIG. 15F  the first attachment zone  140 , the second attachment zone  150  and the connecting attachment zone  1045  form together a substantially U-shaped zone. This substantially U-shaped zone comprises a first elongate attachment zone  140  (indicated as a solid fill area), a second elongate attachment zone  150  (indicated as a solid fill area), and a curved connecting attachment zone  1045  (indicated as a hatched area). The first and second elongate attachment zone  140 ,  150  extend next to each other from the crotch region in the direction of the front transverse edge  133  and in the direction of the rear transverse edge  134 , and more particularly in the fourth, third and second zone Z 4 , Z 3  and Z 2 . The connecting attachment zone  1045  connects said first elongate attachment zone  140  with said second attachment zone  150 . The connecting attachment zone  1045  is a rear connecting attachment zone which connects a rear end portion of the first attachment zone  140  to a corresponding rear end portion of the second attachment zone  150 . The U-shaped zone  140 ,  150 ,  1045  guides the liquid from the left and right parts of the front portion to the rear portion. As illustrated the first interconnecting attachment zone  1045  may be arranged in the rear portion and more in particular in the fourth zone Z 4 . In that manner a convenient liquid distribution channel network is created allowing the liquid to be distributed rapidly throughout the absorbent core. 
     According to the exemplary embodiment of  FIG. 15G  the plurality of attachment zones comprises a first longitudinal attachment zone  140 , a second longitudinal attachment zone  150 , and a transverse attachment zone  1045  in a front portion of the absorbent core. The transverse attachment zone  1045  substantially connects a front end of first longitudinal attachment zone  140  and a front end of second longitudinal attachment zone  150 . As illustrated the first interconnecting attachment zone  1045  may be arranged in the rear portion and more in particular in the fourth zone Z 4 . According to the exemplary embodiment of  FIG. 15H  the plurality of attachment zones comprises a first longitudinal attachment zone  140 , a second longitudinal attachment zone  150 , a central longitudinal attachment zone  180 . The first and second longitudinal attachment zones  140 ,  150  extend adjacent to each other from the crotch region to a rear transverse edge of the absorbent core. The central longitudinal attachment zone  180  extends from the crotch region in the direction of the front transverse edge of the absorbent core. The embodiment of  FIG. 15H  is preferable for male. The first and a second attachment zone  140 ,  150  extend next to each other from a crotch region in the direction of the front edge, and the third attachment zone  180  extends from the crotch region in the direction of the rear edge, wherein seen in a projection on a transverse direction the third attachment zone  180  is located between the first and the second attachment zone  140 ,  150 . Seen in a projection on a longitudinal direction of the absorbent article  130 , a projection of the first and second attachment zone  140 ,  150  does not overlap with a projection of the third attachment zone. The exemplary embodiment of  FIG. 15I  is similar to the embodiment of  FIG. 15H , with this difference that the central attachment zone  180  extends also from the crotch region in the direction of the rear transverse edge, partially in between the first and second attachment zone  140 ,  150 . The embodiment of  FIG. 15I  is preferable for male. The first and a second attachment zone  140 ,  150  extend next to each other from a crotch region in the direction of the front edge, and the third attachment zone  180  extends from the crotch region in the direction of the rear edge, wherein seen in a projection on a transverse direction the third attachment zone  180  is located between the first and the second attachment zone  140 ,  150 . Seen in a projection on a longitudinal direction of the absorbent article  130 , a projection of the first and second attachment zone  140 ,  150  partially overlaps with a projection of the third attachment zone  180 . 
     According to the exemplary embodiment of  FIG. 15J  the plurality of attachment zones comprises a first longitudinal attachment zone  140  and a second longitudinal attachment zone  150  which are interconnected by an attachment portion  1045 ′ in a front portion of the absorbent core and an attachment portion  1045  in a rear portion of the absorbent core. In that manner any leakage via the front and rear portion can be reduced or avoided. The embodiment of  FIG. 15I  can be used for both male and female. 
     In the embodiment of  FIG. 15J  the first attachment zone  140 , the second attachment zone  150  and two connecting attachment zones  1045 ,  1045 ′ form together a substantially rectangular attachment zone. This substantially rectangular attachment zone comprises a first elongate attachment zone  140 , a second elongate attachment zone  150 , and two curved connecting attachment zones  1045 ,  1045 ′. The first and second elongate attachment zone  140 ,  150  extend next to each other from the crotch region in the direction of the front transverse edge  133  and in the direction of the rear transverse edge  134 , and more particularly in the fourth, third and second zone Z 4 , Z 3  and Z 2 . The connecting attachment zone  1045  is a rear connecting attachment zone which connects a rear end portion of the first attachment zone  140  to a corresponding rear end portion of the second attachment zone  150 . The connecting attachment zone  1045  is located in the fourth zone Z 4 . The connecting attachment zone  1045 ′ is a front connecting attachment zone which connects a front end portion of the first attachment zone  140  to a corresponding front end portion of the second attachment zone  150 . The connecting attachment zone  1045 ′ is located in the second zone Z 2 . In that manner a convenient liquid distribution channel network is created allowing the liquid to be distributed rapidly throughout the absorbent core. 
     According to the exemplary embodiment of  FIG. 15K  the plurality of attachment zones comprises a first attachment zone  140 , a second attachment zone  150 , a third attachment zone  160  and a fourth attachment zone  170 , and a central attachment zone  180 . The first and second attachment zones  140 ,  150  extend adjacent to each other from a crotch region in the direction the rear transverse edge. Also, the third and fourth attachment zones  160 ,  170 , as well as the central attachment zone  180  extend adjacent to each other from a crotch region in the direction the front transverse edge. In that manner the distribution of liquid in the front portion of the absorbent core can be further enhanced. The embodiment of  FIG. 15K  is preferable for male. The first and a second elongate attachment zone  140 ,  150  extend next each other, at least in the rear portion of the absorbent core in the direction of the rear transverse edge, and the third and fourth elongate attachment zone  160 ,  170  extend next to each other, at least in the front portion of the absorbent core, in the direction of the front edge. Measured in a transverse direction, a first maximum distance between the first and the second attachment zone  140 ,  150  is smaller than a second maximum distance between the third and the fourth attachment zone  160 ,  170 . 
     According to the exemplary embodiment of  FIG. 15L  the plurality of attachment zones comprises a first longitudinal attachment zone  140 , a second longitudinal attachment zone  150 , and a central longitudinal attachment zone  180 . The first and second longitudinal attachment zones  140 ,  150  extend adjacent to each other over at least 60% of the length of the absorbent core. The central longitudinal attachment zone  180  extends between the first and second attachment zones  140 ,  150 , from the crotch region in the direction of the rear transverse edge of the absorbent core. The embodiment of  FIG. 15L  can be used for both male and female. 
     According to the exemplary embodiment of  FIG. 15M  the plurality of attachment zones comprises a first longitudinal attachment zone  140 , a second longitudinal attachment zone  150 , a central rear longitudinal attachment zone  180   a , and a central front longitudinal attachment zone  180   b . The first and second longitudinal attachment zones  140 ,  150  extend adjacent to each other over at least 60% of the length of the absorbent core. The central rear and front longitudinal attachment zones  180   a ,  180   b  extends between the first and second attachment zones  140 ,  150 , in a rear and front portion of the absorbent core, respectively. The embodiment of  FIG. 15M  can be used for both male and female. 
     According to the exemplary embodiment of  FIG. 15N  the plurality of attachment zones comprises a first attachment zone  140 , a second attachment zone  150 , and a central attachment zone  180 . The first and second attachment zones  140  diverge from the crotch region in the direction of a front and rear transverse edge of absorbent core. The central attachment zone is provided in between the first and second attachment zone  140 ,  150 , mainly in a front portion of the absorbent core. The embodiment of  FIG. 15N  can be used for both male and female. 
     According to the exemplary embodiment of  FIG. 15O  the plurality of attachment zones comprises a first longitudinal attachment zone  140 , a second longitudinal attachment zone  150 , and a central longitudinal attachment zone  180 . The first and second longitudinal attachment zones  140 ,  150  extend adjacent and parallel to each other in the crotch region. The central longitudinal attachment zone  180  extends between the first and second attachment zones  140 ,  150 , over at least 60% of the length of the absorbent core. The embodiment of  FIG. 15O  can be used for both male and female. According to the exemplary embodiment of  FIG. 15P  the plurality of attachment zones comprises a first attachment zone  140  and a second attachment zone  150 . The first and second attachment zones  140 ,  150  extend from the crotch region in the direction of a front and rear transverse edge of absorbent core, and are curved such that the first and second attachment zones  140 ,  150  cross each other at a first crossing point in a front portion of the absorbent core and in a second crossing point in the rear portion of the absorbent core. The embodiment of  FIG. 15P  can be used for both male and female. 
     In the embodiment of  FIG. 15P  a first elongate attachment zone  140 ′, a second elongate attachment zone  150 ′ and two connecting attachment zones  1045 ,  1045 ′ form together a substantially 0-shaped attachment zone. This substantially 0-shaped attachment zone comprises the first elongate attachment zone  140 ′, the second elongate attachment zone  150 ′, and two V-shaped connecting attachment zones  1045 ,  1045 ′. The first and second elongate attachment zone  140 ′,  150 ′ extend next to each other from the crotch region in the direction of the front transverse edge  133  and in the direction of the rear transverse edge  134 , and more particularly in the fourth, and third zone Z 4 , Z 3 . The connecting attachment zone  1045  is a rear connecting attachment zone which connects a rear end portion of the first attachment zone  140 ′ to a corresponding rear end portion of the second attachment zone  150 ′. The connecting attachment zone  1045  is located in the fourth zone Z 4 . The connecting attachment zone  1045 ′ is a front connecting attachment zone which connects a front end portion of the first attachment zone  140 ′ to a corresponding front end portion of the second attachment zone  150 ′. The connecting attachment zone  1045 ′ is located in the second zone Z 2 . Further a first and second V-shaped attachment zone  2001 ,  2002  may be provided at a rear side and front side of the substantially 0-shaped attachment zone  140 ′,  150 ′,  1045 ,  1045 ′. In that manner a convenient liquid distribution channel network is created allowing the liquid to be distributed rapidly throughout the absorbent core. 
     According to the exemplary embodiment of  FIG. 15Q  the plurality of attachment zones comprises a first longitudinal attachment zone  140 , a second longitudinal attachment zone  150 , a third attachment longitudinal zone  160  and a fourth longitudinal attachment zone  170 . The first and second attachment zones  140 ,  150  extend from the crotch region in the direction of the rear transverse edge, and are interconnected via transverse attachment portions  147 ,  157  to third and fourth attachment zone  160 ,  170  extending from the crotch region to the front transverse edge, respectively. The embodiment of  FIG. 15Q  is preferable for female. 
     The exemplary embodiment of  FIG. 15R  is similar to the embodiment of  FIG. 15G  with this difference that two parallel transverse attachment zones  1045   a  and  1045   b  are provided in the front region of the absorbent core. The embodiment of  FIG. 15R  can be used for both male and female. According to the exemplary embodiment of  FIG. 15S  the plurality of attachment zones comprises a first attachment zone  140 , a second attachment zone  150 , a third attachment zone  160  and a fourth attachment zone  170 . The first and second attachment zones  140 ,  150  diverge from the crotch region in the direction of a front and rear transverse edge of absorbent core. The third and fourth attachment zones  160 ,  170  are located outwardly of the first and second attachment zones  140 ,  150 , are shorter than the first and second attachment zones  140 ,  150 , and also diverge from the crotch region in the direction of a front and rear transverse edge of absorbent core. In that manner, in the wetted state, a plurality of tubes is created, wherein the tubes are smaller in a center of the crotch region and gradually widen in the direction of the front and rear transverse edge of the absorbent core. In that manner the shape of the tub which is formed in the wetted state can be further improved to fit well to the body. The embodiment of  FIG. 15S  can be used for both male and female. 
     According to the exemplary embodiment of  FIG. 15T  the plurality of attachment zones comprises a first longitudinal attachment zone  140  and a second longitudinal attachment zone  150 , wherein front end portions  140 ′.  150 ′ thereof diverge in the direction of the front transverse edge of the absorbent core. The embodiment of  FIG. 15T  is preferable for female. 
     According to the exemplary embodiment of  FIG. 15U  the plurality of attachment zones comprises a first longitudinal attachment zone  140 , a second longitudinal attachment zone  150 , a third longitudinal attachment zone  160  and a fourth longitudinal attachment zone  170 , and a central longitudinal attachment zone  180 . The first and second attachment zones  140 ,  150 , as well as the central attachment zone  180  extend adjacent to each other from a crotch region in the direction the front transverse edge. Also, the third and fourth attachment zones  160 ,  170  extend adjacent to each other from a crotch region in the direction the rear transverse edge. In that manner the distribution of liquid in the front portion of the absorbent core can be further enhanced. The embodiment of  FIG. 15U  is preferable for female. 
     According to the exemplary embodiment of  FIG. 15V  the plurality of attachment zones comprises a first longitudinal attachment zone  140 , a second longitudinal attachment zone  150 , and a central longitudinal attachment zone  180 . The first and second attachment zones  140 ,  150  extend adjacent to each other from a crotch region in the direction the front transverse edge. The central attachment zone  180  extends from a crotch region in the direction the rear transverse edge. The embodiment of  FIG. 15V  can be used for both male and female. 
     The exemplary embodiment of  FIG. 15W  is similar to the embodiment of  FIG. 15V  with this difference that the central attachment zone  180  extends partially in between the first and the second attachment zone  140 ,  150 . The embodiment of  FIG. 15W  can be used for both male and female. The exemplary embodiment of  FIG. 15X  is similar to the embodiment of  FIG. 15V  with this difference that the central attachment zone  180  extends all the way in between the first and the second attachment zone  140 ,  150  in the direction of the front transverse edge. The embodiment of  FIG. 15X  can be used for both male and female. 
     According to the exemplary embodiment of  FIG. 16A  the plurality of attachment zones comprises a first attachment zone  140  and a second attachment zone  150 . The first and second attachment zones  140  are substantially parallel in a rear part of the crotch region, whilst the transverse distance between the first and second attachment zones gradually increases in the direction of a front transverse edge of absorbent core. The embodiment of  FIG. 16A  is preferable for female. 
     According to the exemplary embodiment of  FIG. 16B  the plurality of attachment zones comprises a first attachment zone  140  and a second attachment zone  150 . The first and second attachment zones  140  partially overlap in a front part of the crotch region, whilst the transverse distance between the first and second attachment zones gradually increases in the direction of a rear transverse edge of absorbent core. The embodiment of  FIG. 16B  is preferable for female.  FIG. 16B  is similar to the embodiment of  FIG. 15E  with this difference that the elongate attachment zones  140 ′,  150 ′ are shorter and that the connecting zone  1045  comprises a longer longitudinal section extending from the second zone Z 2  to the third zone Z 3  into the fourth zone Z 4  where the elongate attachment zones  140 ′,  150 ′ are located. 
     According to the exemplary embodiment of  FIGS. 16C and 16D  the plurality of attachment zones comprises a first longitudinal attachment zone  140 , a second longitudinal attachment zone  150 , a third attachment longitudinal zone  160  and a fourth longitudinal attachment zone  170 . The first and second attachment zones  140 ,  150  extend from the crotch region in the direction of the rear transverse edge ( FIG. 16D ) or in the direction of the front transverse edge ( FIG. 16C ), and are interconnected via transverse attachment portions  147 ,  157  to third and fourth attachment zone  160 ,  170  extending from the crotch region to the front transverse edge ( FIG. 16D ) or in the direction of the rear transverse edge ( FIG. 16C ), respectively. In  FIG. 16C  the distance between the first and second attachment zones is smaller than the distance between the third and fourth attachment zones, whilst in  FIG. 16D  the distance between the first and second attachment zones is bigger than the distance between the third and fourth attachment zones. The embodiment of  FIG. 16E  is similar to the embodiment of  FIG. 16D  with this difference that the third and fourth attachment zones overlap in a front portion of the absorbent core. The embodiments of  FIGS. 16C and 16E  are preferable for female. The embodiment of  FIG. 16D  is preferable for male. The first and a second elongate attachment zone  140 ,  150  extend next to each other in the rear portion of the absorbent core in the direction of the rear transverse edge, and the third and fourth elongate attachment zone  160 ,  170  extend next to each other in the front portion of the absorbent core, in the direction of the front edge. Measured in a transverse direction, a first maximum distance between the first and the second attachment zone  140 ,  150  is smaller than a second maximum distance between the third and the fourth attachment zone  160 ,  170 . 
       FIG. 16E  is similar to the embodiment of  FIG. 15E  with this difference that the connecting zone  1045  is a rear connecting zone extending in the fourth zone Z 4 , whilst the elongate attachment zones  140 ′,  150 ′ are located mainly in the second and third zone Z 2  and Z 3 . The embodiment of  FIG. 16F  is similar to the embodiment of  FIG. 15U  with this difference that the third and fourth longitudinal attachment zones  160 ,  170  are interconnected at their rear end by a transverse attachment zone  1045 . The embodiment of  FIG. 16F  is preferable for female. 
     The embodiment of  FIG. 16G  is similar to the embodiment of  FIG. 15B  with this difference that the third and fourth longitudinal attachment zones  160 ,  170  have end portions which diverge outwardly in the direction of the front transverse edge and the rear transverse edge of the absorbent core. The embodiment of  FIG. 16G  can be used for both male and female. 
     The embodiment of  FIG. 16H  is similar to the embodiment of  FIG. 15O  with this difference that the first and second attachment zones  140 ,  150  have end portions which diverge outwardly in the direction of the front transverse edge and the rear transverse edge of the absorbent core. The embodiment of  FIG. 16H  can be used for both male and female. 
     The embodiment of  FIG. 16I  is similar to the embodiment of  FIG. 15C  with this difference that the first, second, third and fourth attachment zones  140 ,  150 ,  160 ,  170  are shorter such that in a central part of the crotch region only central attachment zone  180  is present. The embodiment of  FIG. 16I  can be used for both male and female. 
     The embodiment of  FIG. 16J  is similar to the embodiment of  FIG. 16I  with this difference that the two central attachment zones  180  are provided between first and third attachment zones  140 ,  160  and second and fourth attachment zones  150 ,  170 . The embodiment of  FIG. 16J  can be used for both male and female. 
     The embodiments of  FIGS. 16K and 16L  the plurality of attachment zones comprises a first longitudinal attachment zone  140 , a second longitudinal attachment zone  150 , a third attachment longitudinal zone  160  and a fourth longitudinal attachment zone  170 . The first and second attachment zones  140 ,  150  extend from the crotch region in the direction of the front transverse edge. The third and fourth attachment zone  160 ,  170  extend from the crotch region to the rear transverse edge. The distance between the first and second attachment zones  140 ,  150  is bigger than the distance between the third and fourth attachment zones  160 ,  170 . In  FIG. 16K  the third and fourth attachment zones  160 ,  170  extend partially between the first and second attachment zones  140 ,  150 , whilst in  FIG. 16L , seen in the longitudinal direction, the third and fourth attachment zones  160 ,  170  are at a distance of the first and second attachment zones  140 ,  150 . The embodiments of  FIG. 16K  and  FIG. 16L  are preferable for female. 
     In the embodiments of  FIGS. 16M, 16N and 16O  the plurality of attachment zones comprises a first longitudinal attachment zone  140 , a second longitudinal attachment zone  150 , and outwardly diverging attachment zones  160 ,  170  in a front portion of the absorbent core. In  FIG. 16M , additionally a central attachment zone  180  is provided between the first longitudinal attachment zone  140  and the second longitudinal attachment zone  150 . The embodiments of  FIGS. 16M, 16N and 160  are preferable for female. 
       FIG. 16P  is similar to the embodiment of  FIG. 16H  with this difference that first and second attachment zones are provided more to the front of absorbent core. The embodiment of  FIG. 16P  can be used for both male and female. 
     In the embodiment of  FIG. 16Q  the plurality of attachment zones comprises a first longitudinal attachment zone  140  and a second longitudinal attachment zone  150  which extend over at least 60° % of the length of the absorbent core. The first longitudinal attachment zone  140  and the second longitudinal attachment zone  150  are each provided at a front end and at a rear end with an outwardly directed transverse portion. In that manner leakage risks at the front and rear portions of the absorbent core can be further reduced. The embodiment of  FIG. 16Q  can be used for both male and female. 
       FIG. 16R  is similar to the embodiment of  FIG. 15B . The embodiment of  FIG. 16R  can be used for both male and female. 
     In the embodiment of  FIG. 16S  the plurality of attachment zones comprises a first undulated attachment zone  140  and a second undulated attachment zone  150  each extending over at least 60% of the length of the absorbent core. The undulations will increase the length of the channels  140 ,  150 , further improving the liquid distribution in the absorbent core. The embodiment of  FIG. 16S  can be used for both male and female. 
       FIGS. 17A-17V  and  FIGS. 18A-18G  illustrate yet other exemplary embodiments of an absorbent core according to the invention. 
       FIGS. 17A, 17B, 17H and 17K  illustrate that the first and second attachment zones  140 ,  150  may comprise curved portions.  FIGS. 17C, 17D, 17E, 17F, 17G, 17J, 17L, 17M, 17N, 17O, 17P, 17Q, 17R, 17S, 17T, 17U, 17V  illustrate that various patterns are possible with one or more longitudinal sections  140 ,  150 ,  160 ,  170 ,  180 , and/or one or more inclined sections  160 ,  170 ,  160   a ,  160   b ,  170   a ,  170   b  and/or one or more transverse sections  1045 ,  1045   a ,  1045   b ,  1045   c .  FIG. 17I  illustrates that also curved transverse sections  1045   a ,  1045   b  may be used. The embodiments of  FIGS. 17A, 17B, 17D, 17G, 17E, 17G, 17H, 17I, 17G, 17K, 17L, 17M, 17O, 17Q, 17R and 17S  can be used for both male and female. The embodiments of  FIGS. 17C, 17N and 17P  are preferable for male. The embodiments of  FIGS. 17F, 17T, 17U and 17V  are preferable for female. These embodiments illustrate that the liquid distribution may be further enhanced using transverse permanent or semi-permanent attachment zones and/or additional longitudinal attachment zones. 
     In the embodiment of  FIG. 17H  the first attachment zone  140  and the second attachment zone  150  form together two substantially V-shaped zones. A first substantially V-shaped zone is located in a rear portion (and in particular in the fourth zone Z 4 ) and comprises a first elongate attachment zone  140 ′ (indicated as a solid fill area), a second elongate attachment zone  150 ′ (indicated as a solid fill area), and a V-shaped connecting attachment zone  1045  (indicated as a hatched area). The first and second elongate attachment zone  140 ′.  150 ′ extend next to each other from the crotch region in the direction of the rear transverse edge  134  and diverge in the direction of the rear transverse edge  134 . The connecting attachment zone  1045  connects said first elongate attachment zone  140 ′ with said second elongate attachment zone  150 ′. The connecting attachment zone  1045  is a front connecting attachment zone which connects a front end portion of the first attachment zone  140 ′ to a corresponding front end portion of the second attachment zone  150 ′. Similarly, a third elongate attachment zone  140 ″, a fourth elongate attachment zone  150 ″ and a connecting attachment zone  1045 ′ form together a second substantially V-shaped zone located in a front portion of the absorbent core and more in particular in the second and third zone Z 2 , Z 3 . This second substantially V-shaped zone  140 ″,  150 ″,  1045 ′ may be joined to the first substantially V-shaped zone  104 ′,  150 ′,  1045 . In the illustrated embodiment the connecting attachment zones  1045 ,  1045 ′ are connected at or near the transverse crotch line L. The third and fourth elongate attachment zone  140 ″,  150 ″ extend next to each other from the crotch region in the direction of the front transverse edge  133  and diverge in this direction. The connecting attachment zone  1045 ′ connects said third elongate attachment zone  140 ″ with said fourth elongate attachment zone  150 ″. The connecting attachment zone  1045 ′ is a rear connecting attachment zone which connects a rear end portion of the third attachment zone  140 ″ to a corresponding rear end portion of the fourth attachment zone  150 ″. The first and second V-shaped zones guide the liquid from left and right parts of the front portion towards the rest of the absorbent core. As illustrated the first interconnecting attachment zone  1045 ′ may be arranged in the front portion, and more in particular in the third zone Z 3 , and the second interconnecting attachment zone  1045  may be arranged in the rear portion, and in particular in the fourth zone Z 4 . By connecting the first interconnecting attachment zone  1045  with the second interconnecting attachment zone  1045 ′ in the crotch region a convenient liquid distribution channel network is created allowing the liquid to be distributed rapidly throughout the absorbent core. 
     In the embodiment of  FIG. 17K  the first attachment zone  140  and the second attachment zone  150  form together two “O”-shaped zones between a first and a second substantially V-shaped zone. The first V-shaped zone comprises elongate attachment zones  140   a ,  150   a  interconnected by a connecting attachment zone  1045   a . The first O-shaped zone comprises elongate attachment zones  140   b ,  150   b  interconnected by connecting attachment zones  1045   a ′,  1045   b . The second O-shaped zone comprises elongate attachment zones  140   c ,  150   c  interconnected by connecting attachment zones  1045   b ′,  1045   c . The second V-shaped zone comprises elongate attachment zones  140   d ,  150   d  interconnected by a connecting attachment zone  1045   c′.    
       FIGS. 18A-18G  illustrate further embodiments. In  FIG. 18A  the first to fourth attachment zones are similar to the first to fourth attachment zones of  FIG. 16I , but instead of a central rectilinear attachment zone, there is provided an oval attachment zone  180  in the crotch region, between the first and second attachment zone  140 ,  150  and the third and fourth attachment zone  160 ,  170 . 
       FIGS. 18B, 18C, 18D  illustrate that various patterns are possible with one or more longitudinal sections and/or one or more inclined sections and/or one or more transverse sections as described before.  FIGS. 18E, 18F .  18 G illustrate that the first and second attachment zones  140 ,  150  may comprise various rectilinear sections which are oriented at an angle with respect to the longitudinal direction of the absorbent core. The embodiments of  FIGS. 18A, 18B, 18C, 18D, 18E, 18F and 18G  can be used for both male and female. 
     In the embodiment of  FIG. 18B  the first attachment zone  140  and the second attachment zone  150  are interconnected by a plurality of transverse connecting attachment zones comprising a front connecting attachment zone  1045 ′, a rear connecting attachment zone  1045 , and a plurality of intermediate connecting attachment zones  1045   a ,  1045   b ,  1045   c ,  1045   d . The number of intermediate connecting attachment zones may be dependent on the size of the absorbent core. Preferably the first and second elongate attachment zone extend from the fourth to the second zone. Optionally one or more longitudinal intermediate attachment zones  180  may be provided. In the embodiment of  FIG. 18B  the first attachment zone  140  and the second attachment zone  150  form two V-shaped attachment zones, similar to the embodiment of  FIG. 17H  but with straight zones  140 ,  150 . 
     In the embodiment of  FIG. 18F  the absorbent core  130  comprises an absorbent material between a top core wrap sheet and a back core wrap sheet, said absorbent core  130  being positioned in between the topsheet and the backsheet of the absorbent article. The absorbent core  130  has a first and second longitudinal edge  131 ,  132  and a first and second transverse edge  133 ,  134 . The absorbent core  130  has a longitudinal center line CL dividing the absorbent core  130  in a first longitudinal portion and a second longitudinal portion on either side of the longitudinal center line. The absorbent core  130  has a transverse crotch line L dividing the absorbent core  130  in a front portion  130   a  and a rear portion  130   b  on either side of the transverse crotch line L. The absorbent core  130  is provided with a plurality of attachment zones  140 ,  150  where the top core wrap sheet is attached to the back core wrap sheet. 
     The plurality of attachment zones  140 ,  150  comprises a first elongate attachment zone  140  crossing the longitudinal center line CL in a first crossing point CP 1 , in said front portion  130   a  and/or in said rear portion  130   b , from the first longitudinal portion to the second longitudinal portion. In the illustrated embodiment the first crossing point is located at a distance dx of the transverse crotch line L, here in the front portion  130   a . However, in other embodiments the first crossing point CP 1  may be located in the rear portion  130   b  of the absorbent core  130 . In yet other embodiments, the first crossing point CP 1  may also be located on the transverse crotch line L, i.e. at the border of the front portion  130   a  and the rear portion  130   b . The plurality of attachment zones  140 ,  150  comprises a second elongate attachment zone  150  crossing said longitudinal center line CL in a second crossing point CP 2 , in said front portion  130   a  and/or in said rear portion  130   b , from the second longitudinal portion to the first longitudinal portion. In the illustrated embodiment of  FIG. 18F , the first and second crossing point CP 1 , CP 2  are the same point. The position of the first and second crossing point CP 1 , CP 2  (and in particular the distance dx) may be optimized in function of whether the absorbent article is intended for a male or female. 
     Preferably, the distance between the first and/or second crossing point CP 1 . CP 2  and the transverse crotch line is larger than 1% of the length of the absorbent core, more preferably larger than 2%, even more preferably larger than 3%. Preferably, the distance between the first and/or second crossing point CP 1 , CP 2  and the transverse crotch line is smaller than 20% of the length of the absorbent core, more preferably smaller than 10%. 
     A distance between the transverse crotch line L and a transverse center line T extending perpendicular on the longitudinal direction of the absorbent core, through the middle of the absorbent core, is smaller than 10%, more preferably smaller than 5% of the length of the absorbent core. The transverse center line T is not shown in  FIG. 18F  but is drawn in  FIG. 27B . 
     Preferably, the first elongate attachment zone  140  extends both in the front portion  130   a  and in the rear portion  130   b  and the second elongate attachment zone  150  extends both in the front portion  130   a  and in the rear portion  130   b . Preferably, the first elongate attachment zone  140  and the second elongate attachment zone  140  are arranged symmetrically with respect to the longitudinal center line CL of the absorbent core  130 . 
     Preferably, a maximum distance dmaxf, dmaxr between the first and the second elongate attachment zone  140 ,  150  is between 15 and 70% of the width of the absorbent core, more preferably between 20 and 50%. A maximum distance dmaxf between the first and the second attachment zone  140 ,  150  in the front portion  130   a  may be different from a maximum distance dmaxr between the first and the second attachment zone  140 ,  150  in the rear portion  130   b . Preferably, the length of the first and second attachment zone is larger than 10% of the length of the absorbent core, more preferably larger than 30%, even more preferably larger than 50%. Preferably, the attachment zones  140 ,  150  are permanent attachment zones which remain attached when wetted. Preferably, said first and second attachment zone  140 ,  150  each extend, seen in the transverse direction of the absorbent core, over the transverse distance which is at least 1 mm, preferably at least 3 mm, more preferably at least 4 mm, even more preferably at least 5 mm, most preferably at least 6 mm. 
     A front end of the first attachment zone  140  is preferably located in the second zone Z 2 , and a rear end of the first attachment zone  140  is preferably located in the fourth zone Z 4 . Similarly, a front end of the second attachment zone  150  is preferably located in the second zone Z 2  or in the third zone, and a rear end of the second attachment zone  150  is preferably located in the fourth zone Z 4 , wherein the zone may be defined as described in the summary. 
     A similar embodiment is illustrated in  FIG. 26B , where the first elongate attachment zone comprises portions  140 ,  160 , and the second elongate attachment zone comprises portions  150 ,  170 . 
     In the embodiments of  FIGS. 26A and 26G , the first and second elongate attachment zone  140 ,  160 ;  150 ,  170  may comprise a bridging zone B allowing a liquid flow between the first and the second longitudinal edge  131 ,  132  by capillary action through the absorbent material and/or by mass flow, such that upon wetting of the absorbent material, front channels  140 ,  150  and rear channels  160 ,  170  are created, wherein the bridging zone B extends between said front and rear channels; wherein a minimum distance between said front and rear channel is preferably larger than 3 mm more preferably larger than 5 mm. The bridging zone B may extend from a first portion of the absorbent core to a second portion of the absorbent core, wherein the first portion is defined between the first longitudinal edge  131  and the longitudinal center axis CL of the absorbent core  130  and the second portion is defined between the second longitudinal edge  132  and the longitudinal center axis CL of the absorbent core. The bridging zone B may comprise one or more temporary attachments between the top and back core wrap sheet which are configured to detach when wetted; and/or the bridging zone B may comprise at least one permanent attachment zone in a direction from the first to the second longitudinal edge  131 ,  132 ; and/or the said bridging zone B may comprise absorbent material. Preferably, the absorbent material comprises cellulosic fluff pulp and/or superabsorbent particles. 
     In the embodiments of  FIGS. 18F, 18G, 26A, 26B and 26  G, the first and second attachment zone together for a substantially X-shaped zone arranged symmetrically with respect to the longitudinal center line CL. In other embodiments, an X-shaped zone may be combined with differently shaped zones, see e.g.  FIG. 17G . Also, the X-shaped zone may comprised curved portions, see e.g. the embodiments of  FIGS. 17H, 21N, 22P, 23U, 23V . 
     In yet other embodiments, multiple X-shaped zones may be combined, see e.g. the embodiments of  FIGS. 15P, 17K, 18E . In the embodiment of  FIGS. 15P and 18E  a first X-shaped attachment zone (including V-shaped portion  2001  and a front portion of  140 ′,  150 ′) is located in the front portion  130   a , and a second X-shaped attachment zone (including V-shaped portion  2002  and a rear portion of  140 ′,  150 ′) is located in the rear portion  130   b . The first X-shaped attachment zone is connected to the second X-shaped attachment zone at the transverse crotch line L. In the embodiment of  FIG. 17K  a first X-shaped attachment zone (including portion  1045   c ,  1045   c ′) is located in the second zone Z 2  of the front portion  130   a , a second X-shaped attachment zone (including portions  1045   b ,  1045   b ) is located in the third zone Z 3  of the front portion  130   a , and a third X-shaped attachment zone (including portions  1045   a ,  1045   a ′) is located in the fourth zone Z 4  of the rear portion  130   b . The first X-shaped attachment zone is connected to the second X-shaped attachment zone, and the second X-shaped attachment zone is connected to the third X-shaped attachment zone. 
     
       FIGS. 19A-19D 
     
       FIGS. 19A-19D  illustrate further embodiments wherein the absorbent core is provided with at least a first attachment zone  140 , wherein in said first attachment zone  141  said top core wrap sheet is attached to said back core wrap sheet along an attachment which extends, seen in a transverse and/or longitudinal direction of the absorbent core, over a transverse and/or longitudinal distance which is at least 1 mm, preferably at least 2 mm, more preferably at least 3 mm, most preferably at least 4 mm; and/or said top core wrap sheet is attached to said back core wrap sheet along a discontinuous attachment at a plurality of locations at a distance of each other, seen in the transverse and/or longitudinal direction of the absorbent core; such that upon wetting of the absorbent material, a first channel is created at said first attachment zone  140 . The embodiments of  FIGS. 19A, 19B .  19 C and  19 D can be used for both male and female. 
     In the embodiment of  FIG. 19A , a single longitudinal attachment zone  140  is illustrated, along with a first and second transversal attachment zone  1045   a ,  1045   b  which are positioned at either end of the longitudinal attachment zone  140 . The first and second transversal attachment zone  1045   a ,  1045   b  are illustrated as curved zones, but it is clear to the skilled person that the first and/or second transversal attachment zone may also be provided as straight zones. In the embodiment of  FIG. 19B , a single longitudinal attachment zone  140  is illustrated, along with a first and second transversal attachment zone  1045   a ,  1045   b  which are positioned between the attachment zone  140  and the first transversal edge of the absorbent core. In addition to, or alternative to the embodiment of  FIG. 19B  the first and second transversal attachment zones  1045   a .  1045   b  may be positioned between the attachment zone  140  and the second transversal edge of the absorbent core. In other words, it is clear to the skilled person that e.g. a third and/or fourth transversal attachment zone may be added. In the embodiment of  FIG. 19C , a single longitudinal attachment zone  140  is illustrated, along with a first and second transversal attachment zone  1045   a ,  1045   b  which are positioned at either side of the longitudinal attachment zone  140 . Although the transversal attachment zones  1045   a .  1045   b  are illustrated to be connected to the longitudinal attachment zone  140 , it is clear to the skilled person that other embodiments exist wherein the transversal attachment zones  1045   a ,  1045   b  are not connected to the longitudinal attachment zone  140 . In the embodiment of  FIG. 19D , a single longitudinal attachment zone  140  is illustrated. The illustrated longitudinal attachment zone  140  comprises curved sections, however, in addition or alternatively the longitudinal attachment zone  140  may comprise straight sections. It is clear to the skilled person that any of the earlier described embodiments related to at least two longitudinal attachment zones, or any combination thereof may be applied to the embodiments wherein the absorbent core comprises a single longitudinal attachment zone. 
     Since liquid may in many cases not be distributed evenly or symmetrically, it may be advantageous to include at least one attachment zone through which liquid may go from the first and second channels  140 ,  150  and vice-versa. This will allow a good distribution over the entire absorbent core as well as an improved formation of the channels and the tub-shape upon swelling of the absorbent core. 
       FIGS. 20A-2Z .  21 A- 1 Z,  22 A-Z,  23 A- 23 V 
     In the embodiments of  FIGS. 20A-20W, 20Z, 21G-21M, 21O-21T, 21V-21X, 21Z, 22D-22M, 22R-22Z, 23A-23L , this is achieved with a transversal attachment zone  1045  connecting the rear ends of longitudinal attachment zones  140 ,  150 . As will be clear from the figures, the presence of such a transversal attachment zone  1045  does not preclude the elements mentioned in conjunction with the previous figures, such as the presence of a central attachment zone  180  and/or variations of the length, position and/or shape of longitudinal attachment zones  140 ,  150 . The figures furthermore show that the presence of such a transversal attachment also does not preclude the presence of third and fourth longitudinal attachment zones  160 ,  170 , or of transversal attachment zones  147 ,  157  which connect the longitudinal attachment zones  140 ,  150  to the further longitudinal attachment zones  160 ,  170 . Furthermore, the figures show that the transversal attachment zone  1045  need not be straight: it may be rounded as in for example  FIGS. 20A-20D , rounded at the edges only as for example in  FIGS. 20E-20H , or take another shape. In the embodiments of  FIGS. 20A-20Z, 21G -Z,  22 D- 22 N,  22 R-Z.  23 A- 23 L,  23 U-V the first attachment zone  140 ,  160  (where present; in some embodiments the zone is indicated with one reference number  140  and in other embodiments with two reference numbers  140 ,  160 ), the second attachment zone  150 ,  170  (where present) and the connecting attachment zone  1045  form together a substantially U-shaped zone. The substantially U-shaped zone may extend from the rear portion to the front portion (and in particular from the fourth zone Z 4  to the second zone Z 2 ). The first and second elongate attachment zone  140 ,  150 ,  160 ,  170  (where present) extend next to each other from the crotch region in the direction of the rear transverse edge  134  and/or the front transverse edge  133 . Optionally the first and second elongate attachment zone  140 ,  150 ,  160 ,  170  (where present) may diverge in the direction of the front transverse edge  133 . The connecting attachment zone  1045  connects said first elongate attachment zone  140 ,  160  (where present) with said second elongate attachment zone  150 ,  170  (where present). The connecting attachment zone  1045  may be a front connecting attachment zone which connects a front end portion of the first attachment zone to a corresponding front end portion of the second attachment zone ( FIG. 20X-Y ); or a rear connecting attachment zone which connects a rear end portion of the first attachment zone to a corresponding rear end portion of the second attachment zone ( FIGS. 20A-W , and  20 Z,  21 G- 21 Z). It is noted that also two U-shaped attachment zones may be provided, see  FIGS. 21N and 22N, 23U, 23V . The presence of a central attachment zone  180 , especially in the front portion may further enhance the liquid distribution. The length of the central attachment zone  180  is preferably at least 20% of the length of the first and second elongate attachment zone  140 ,  150 , and is preferably located at least partially between the first and second elongate attachment zone  140 ,  150 . 
     In the embodiments of  FIGS. 20X-20Y , a transversal attachment zone  1045 ′ connects the back ends of longitudinal attachment zones  140 ,  150 . In the embodiments of  FIGS. 21A-21F, 22O-22Q .  23 M- 23 P, there are two transversal attachment zones  1045  and  1045 ′, respectively connecting the front and back ends of the longitudinal attachment zones  140 ,  150 ,  160 ,  170 . In the embodiments of  FIGS. 21N, 22N, 23U and 23V , there are two longitudinal attachment zones  140 ,  150  positioned toward the front side of the absorbent core which are connected by a transversal attachment zone  1045 ′,  1045   a  at their rear ends, as well as two longitudinal attachment zones  160 ,  170  positioned toward the rear side of the absorbent core which are connected by a transversal attachment zone  1045 ,  1045   b  at their front ends. 
     In the embodiment of  FIGS. 21A-21F .  220 - 22 Q.  23 M- 23 P the first attachment zone  140 ,  160  (where present), the second attachment zone  150 ,  170  (where present) and two connecting attachment zones  1045 ,  1045 ′ form together a substantially rectangular or O-shaped attachment zone. This substantially rectangular attachment zone comprises a first elongate attachment zone  140 ,  160  (where present), a second elongate attachment zone  150 ,  170  (where present), and two straight or curved connecting attachment zones  1045 ,  1045 ′. The first and second elongate attachment zone  140 ,  150 ,  160 ,  170  (where present) extend next to each other from the crotch region in the direction of the front transverse edge  133  and/or in the direction of the rear transverse edge  134 , and more particularly in the fourth, third and second zone Z 4 , Z 3  and Z 2 . The connecting attachment zone  1045  is a rear connecting attachment zone which connects a rear end portion of the first attachment zone  140 ,  160  (where present) to a corresponding rear end portion of the second attachment zone  150 ,  170  (where present). Preferably, he connecting attachment zone  1045  is located in the fourth zone Z 4 . The connecting attachment zone  1045 ′ is a front connecting attachment zone which connects a front end portion of the first attachment zone  140  to a corresponding front end portion of the second attachment zone  150 . Preferably, the connecting attachment zone  1045 ′ is located in the second zone Z 2 . In that manner a convenient liquid distribution channel network is created allowing the liquid to be distributed rapidly throughout the absorbent core. 
     The connecting between the longitudinal channels need not be done with a transversal channel, but may also be achieved by shaping the longitudinal channels in a specific way. For example, in the embodiment of  FIG. 23R , the four longitudinal attachment zones  140 ,  150 ,  160 ,  170  collectively form a diamond shape. Likewise, in the embodiment of  FIG. 23T , six longitudinal attachment zones  140 ,  150 ,  160   a ,  170   a ,  160   b ,  170   c  are so connected as to form an elongated hexagon shape. Combinations of these two methods of connecting channels are also possible. In the embodiment of  FIG. 23Q , the longitudinal attachment zones  140 ,  150  are connected at their rear ends by a transversal attachment zone  1045  and converge to meet at their front ends. In the embodiment of  FIG. 23S , longitudinal attachment zones  140  and  150  are connected by a transversal attachment zone  1045 , while longitudinal attachment zones  160 ,  170 , which are connected to zones  140 ,  150  respectively, converge at their front ends. The skilled person will be capable of envisaging other combinations and variations of the depicted embodiments. 
     The advantageous effect may be achieved even in cases wherein the longitudinal attachment zones are not directly connected, but merely approach each other in certain places. For example, in the embodiments of  FIG. 20Z, 21J, 21T , the rear ends of longitudinal attachment zones  140 ,  150  are connected by transversal attachment zone  1045 , and the front ends of longitudinal attachment zones  160 ,  170  are shaped such that they approach one another. In other embodiments, such as the ones of  FIG. 21U, 21Y, 22A-22C , the longitudinal attachment zones  140 ,  150 ,  160 ,  170  approach one another either at the ends or along their path, and this may, depending on the specific configuration, be sufficient to allow for liquid to go from one channel to another. 
     The embodiments of  FIGS. 21D, 21E, 21N, 21T, 21U, 21X, 21Y, 22A, 22B, 22C, 22N, 22O, 22P, 22Q, 22R, 22S, 23D, 23E, 23M, 23N, 23O ,  23 P,  23 R,  23 T,  23 U and  23 V can be used for both male and female. The embodiments of  FIGS. 20A, 20B, 20C, 20D, 20E, 20F, 20G, 20H, 20I, 20J, 20K, 20L, 20M, 20N, 20O, 20P, 20Q, 20R, 20S, 20T, 20U ,  20 V,  20 W,  20 Z,  21 K,  21 L,  21 M,  21 O,  21 P,  21 Q,  21 R,  21 S,  21 V,  21 W,  21 Z,  22 D,  22 E,  22 F,  22 G,  22 H,  22 I,  22 J,  22 K,  22 L,  22 M,  22 T,  22 U,  22 V,  22 W,  22 Y,  22 Z,  23 A,  23 B,  23 C,  23 F,  23 G,  23 H,  23 I,  23 J,  23 K,  23 L and  23 S are preferable for male. The embodiments of  FIGS. 20X, 20Y, 21A, 21B, 21C, 21F, 21G, 21H, 21I, 21J, 22X and 23Q  preferable for female. 
       FIGS. 24A-C ,  25 A- 25 Z and  FIGS. 26A-26T   
     In addition to the perspective view as shown in  FIG. 12 ,  FIGS. 24A-C  are photographs representing an absorbent article comprising an exemplary embodiment of an absorbent core of the invention.  FIG. 24A  illustrates the absorbent article when the absorbent core is in a dry state, whereas  FIGS. 24B and 24C  illustrate the absorbent article when the absorbent core is in a wetted state. In  FIG. 24A  attachments zones  140 ,  150 ,  160  and  170  wherein substantially no absorbent material is present, can be distinguished. However, in the illustrated photograph  24 A the attachment zones  140 ,  150 ,  160  and  170  have been slightly darkened in order to better illustrate the position thereof, since due to quality restraints of the photograph  24 A a part of this visual information has been lost.  FIGS. 24B and 24C  are photographs of the absorbent article in a wetted state, wherein tubes  301 ,  302 ,  303  have formed, which leads to the attachment zones  140 ,  150 ,  160  and  170  becoming more visible as channels. Thanks to the attachment zones and associated channels  140 ,  150 ,  160  and  170  the liquid is evenly spread, resulting in the formation of tubes  301 ,  302 ,  303  which provide a tub shape to the absorbent core  130 . Such a tub shape adapts perfectly to the body and can be seen, at least partially, in  FIG. 24C  where the absorbent article is not attached to a bottom surface at the corners of the absorbent article, which is the case in  FIGS. 24A and 24B . Further, compared to prior art solutions, the liquid is kept in an improved manner absorbed in the absorbent core  130 , and the risk on leakage is reduced. Also, because of the creation of the channels  140 ,  150 ,  160 ,  170 , the liquid is absorbed faster. Seen in a longitudinal direction of the absorbent core  130 , looking from the front edge  133  to the rear edge  134 , the absorbent core  130  comprises subsequently a first, second, third, fourth and fifth zone Z 1 , Z 2 , Z 3 , Z 4 , Z 5 . The zones may have the features of any one of the embodiments above. 
     The embodiments of  FIGS. 24A, 24B and 24C  are advantageous for a male person. Indeed, the first and a second elongate attachment zone  140 ,  150  extend next each other, at least in the front portion of the absorbent core in the direction of the front edge  133  of the absorbent core, and a third and a fourth elongate attachment zone  160 ,  170  extend next to each other, at least in the rear portion  130   b  of the absorbent core, in the direction of the second transverse edge  134 . Measured in a transverse direction, a first maximum distance d 12  between the first and the second attachment zone  140 ,  150  is bigger than a second maximum distance d 34  between the third and the fourth attachment zone  160 ,  170 , the first distance d 12  between the first and the second attachment zone is at least 5%, preferably at least 10% bigger, even more preferably at least 15% bigger than a second distance d 34  between the third and the fourth attachment zone. In the embodiment of  FIG. 24A , the first and the second elongate attachment zone  140 ,  150  each have a front end  142 ,  152  adjacent to absorbent material and a rear end  141 ,  151  adjacent to absorbent material. The third and the fourth elongate attachment zone  160 ,  170  each have a rear end  162 ,  172  adjacent to absorbent material and a front end  161 ,  171  adjacent to absorbent material. In the embodiment of  FIG. 24B , the first and the second elongate attachment zone  140 ,  150  each have a front end  142 ,  152  adjacent to absorbent material and a rear end  141 ,  151  connected on the crotch line L to a front end  171 ,  161  of the third and the fourth elongate attachment zone  160 ,  170 . The third and the fourth elongate attachment zone  160 ,  170  each have a rear end  162 ,  172  adjacent to absorbent material. In the embodiment of  FIG. 24A , seen in a projection on the longitudinal direction of the absorbent core, the first and the second attachment zone  140 ,  150  extend over a length which is less than the length of the third and fourth attachment zone  160 ,  170 . The distance (d 12 ) between the first and the second attachment zone  140 ,  150  is preferably between 15 and 70% of the width of the absorbent core, more preferably between 20 and 50%; wherein preferably the distance (d 12 ) between the first and the second attachment zone is between 10 mm and 100 mm, more preferably between 20 mm and 80 mm, even more preferably between 30 mm and 70 mm. Preferably, the distance (d 34 ) between the third and the fourth attachment zone is between 5 and 60% of the width of the absorbent core, more preferably between 10 and 40%; wherein preferably the distance (d 34 ) between the third and the fourth attachment zone is between 5 mm and 60 mm, more preferably between 10 mm and 50 mm, even more preferably between 15 mm and 40 mm. Preferably, the length of the first and the second attachment zone  140 ,  150  is larger than 5% of the length of the absorbent core  130 ; more preferably larger than 10%, even more preferably larger than 15%. Also, preferably the length of the third and the fourth attachment zone is larger than 5% of the length of the absorbent core; more preferably larger than 10%, even more preferably larger than 15%. Preferably, the length of the third and the fourth attachment zone  160 ,  170  is larger than the length of the first and the second attachment zone  130 ,  140 , preferably at least 10% larger, more preferably at least 20% larger. Preferably, seen in a projection on a longitudinal direction, the first and second attachment zone  140 ,  150  do not overlap with the third and fourth attachment zone  160 ,  170 . 
     In the embodiment of  FIG. 24B  the first attachment zone  140  may be connected to the third attachment zone  170  through a permanent or semi-permanent attachment zone and the second attachment zone  150  may be connected to the fourth attachment zone  160  through a permanent or semi-permanent attachment zone, wherein a semi-permanent attachment zone may loosen upon wetting to allow for a liquid flow in a transverse direction. 
       FIGS. 25A-25Z  and  FIGS. 26A-26T  illustrate embodiments in which the dimensions of the longitudinal attachments zones  140 ,  150 ,  160 ,  170 ,  180  in the longitudinal direction have been reduced as compared to previously illustrated embodiments. Regarding the illustrated configurations of the shorter longitudinal attachments zones  140 ,  150 ,  160 ,  170 , central attachments zones  180 ,  180   a ,  180   b ,  180   c  and transversal attachment zones  1045 ,  1045   a ,  1045   b .  1045   c  as illustrated in  FIGS. 25A-25Z  and  FIGS. 26A-26T , it is clear to the skilled person that the above described technical considerations and advantages in view of longer longitudinal attachments zones  140 ,  150 ,  160 ,  170 , central attachments zones  180 ,  180   a ,  180   b .  180   c  and transversal attachment zones  1045 ,  1045   a ,  1045   b ,  1045   c  as illustrated in the previous figures apply in a similar way, mutatis mutandis. 
     The embodiments of  FIGS. 25A, 25B, 25C, 25F, 25G, 25H, 25I, 25J, 25K, 25L, 25O, 25P, 25R, 25S, 25T, 25U, 25V, 25W, 25X, 25Y, 25Z ,  26 A,  26 B,  26 F,  26 G,  26 H,  26 J,  26 K,  26 L,  26 M,  26 N,  26 O,  26 P,  26 Q,  26 R,  26 S and  26 T can be used for both male and female. The embodiments of  FIGS. 25D, 25E, 25N, 25Q, 26C, 26D, 26E and 26I  are preferable for male. The embodiments of  FIG. 25M  is preferable for female. 
     
       FIG. 27A-B 
     
       FIG. 27A  illustrates a top view of an absorbent article, here a diaper  100 , in its flat out, un-contracted state with the wearer side facing the viewer. The skilled person understands that the absorbent article may also be a pant or an adult incontinence garment or the like. Preferably the chassis includes side panels or ears  210 , elasticized leg cuffs and elastic waist elements. A front end portion of diaper  100  is configured as a front waist region  100   a . The opposite rear end portion is configured as a back waist region  100   b  of diaper  100 . Waist regions  100   a  and  100   b  may include elastic waist elements such that they gather about the waist of the wearer to provide improved fit and containment. The periphery of diaper  100  is defined by the outer edges of the diaper  100  in which longitudinal edges  101 ,  102  run generally parallel to a longitudinal axis of diaper  100  and transverse end edges  103 ,  104  run between the longitudinal edges  101 ,  102  generally parallel to a transverse axis of diaper  100 . The chassis also comprises a fastening system, which may include at least one fastening or securing member  212  and at least one landing zone (not visible). The various components within diaper  100  may be bound, joined or secured by any method known in the art, for example by adhesives in uniform continuous layers, patterned layers or arrays of separate lines, spirals or spots. Top core wrap sheet, topsheet, back core wrap sheet, backsheet, absorbent material and other components may be assembled in a variety of well-known configurations and are well known in the art. 
       FIG. 27B  illustrates the absorbent core  130  of the absorbent article of  FIG. 27A . The absorbent article  100  comprises a liquid pervious topsheet, a liquid impervious backsheet, and the absorbent core  130  positioned in between the topsheet and the backsheet. The absorbent core  130  comprises absorbent material between a top core wrap sheet and a back core wrap sheet, in a similar manner as described in the other embodiments. Absorbent core  130  has a first and second side edge  131 ,  132 , a front edge  133  and a rear edge  134 , wherein the absorbent core is provided with a plurality of attachment zones  140 ,  150 ,  160 ,  170  where the top core wrap sheet is attached to the back core wrap sheet, and where preferably substantially no absorbent material is present. Seen in a longitudinal direction of the absorbent core  130 , looking from the front edge  133  to the rear edge  134 , the absorbent core  130  comprises subsequently a first, second, third, fourth and fifth zone Z 1 , Z 2 , Z 3 , Z 4 , Z 5 . 
     The absorbent core  130  comprises a front portion  130   a  extending between the front edge  133  and a transverse crotch line L of the absorbent core, and a rear portion  130   b  extending between the rear edge  134  and the transverse crotch line L of the absorbent core  130 . The first, second and third zone Z 1 , Z 2 , Z 3  extend in the front portion of the absorbent core and the fourth and fifth zone Z 4 , Z 5  extend in the rear portion. Preferably, in said first and fifth zone substantially no permanent attachment zones are present. The second zone Z 2  comprises a first and a second permanent elongate front attachment zone  130 ,  140 , said first and second front attachment zones  130 ,  140  extending from an edge of the first zone Z 1  in the direction of the third zone Z 3 . 
     The fourth and third zone comprises a first and second rear elongate attachment zone  160 ,  170 , said first and second rear attachment zone extending from an edge of the fifth zone Z 5  in the direction of the third zone Z 3 . At least one of said second, third and fourth zone comprises a bridging zone B allowing a liquid flow F between the first and the second side edge  131 ,  132  by capillary action through the absorbent material. The bridging zone B extends between the first front attachment zone  140  and the first rear attachment zone  160 , such that upon wetting of the absorbent material, a front and rear channel are created at said first front and rear attachment zone  140 ,  160 , respectively, wherein the bridging zone B extends between said front and rear channel. Preferably a minimum distance x between the first front attachment zone  140  and the first rear attachment zone  160  is larger than 3 mm more preferably larger than 5 mm. The bridging zone B further extends between the second front attachment zone  150  and the second rear attachment zone  170 , such that upon wetting of the absorbent material, a front and rear channel are created at said second front and rear attachment zone  150 ,  170 , respectively, wherein the bridging zone B further extends between said front and rear channel. Preferably a minimum distance x between the second front attachment zone  150  and the second rear attachment zone  170  is larger than 3 mm more preferably larger than 5 mm. 
     The first and second rear elongate attachment zones  160 ,  170  extend from the fourth zone into the third zone Z 3  so that an absorbent article is formed that fits well to the body of the wearer. Preferably a distance between the transverse crotch line L and a transverse center line T extending perpendicular on the longitudinal direction of the absorbent core, through the middle of the absorbent core, is smaller than 10%, more preferably smaller than 5% of the length of the absorbent core. 
     The first zone Z 1  extends over a length corresponding with at least 5%, preferably at least 10% of the length la of the absorbent core seen in the longitudinal direction, e.g. between 10% and 20%. The fifth zone Z 5  extends over a length corresponding with at least 10% of the length la of the absorbent core seen in the longitudinal direction, preferably at least 20%, more preferably at least 25%, e.g. between 20% and 40%. 
     Preferably the second, the third and/or the fourth zone Z 1 , Z 2 , Z 3  each extends over a length corresponding with at least 10% of the length la of the absorbent core seen in the longitudinal direction, preferably at least 15%. e.g. between 10% and 20% of the length of the absorbent core. Preferably the first front attachment zone  140  and the second front attachment zone  150  are arranged symmetrically with respect to a longitudinal center axis CL of the absorbent core  130 . Preferably the distance d 12  between the first and the second attachment zone is between 20 mm and 70 mm, more preferably between 30 mm and 60 mm, even more preferably between 40 mm and 55 mm. As explained in the summary, such a configuration is especially suitable for male persons. 
     Preferably the first rear attachment zone  160  and the second rear attachment zone  170  are arranged symmetrically with respect to the longitudinal center axis CL of the absorbent core. Preferably the distance d 34  between the first and the second rear attachment zone  160 ,  170  is between 10 mm and 50 mm, more preferably between 15 mm and 40 mm, even more preferably between 20 mm and 30 mm. 
     The bridging zone B extends from a first portion of the absorbent core, in the second and/or third zone Z 2 , Z 3 , to a second portion of the absorbent core, in the second and/or third zone, wherein the first portion is defined between the first side edge  131  and the longitudinal center axis CL of the absorbent core  130  and the second portion is defined between the second side edge  132  and the longitudinal center axis CL of the absorbent core  130 . The bridging zone B may comprise temporary attachments between the top and back core wrap sheet which are configured to detach when wetted. 
     A first smallest distance d 12  between the first and the second front attachment zone  140 ,  150  is bigger than a second smallest distance d 34  between the first and the second rear attachment zone  160 ,  170 . The first and the second front attachment zone  140 ,  150  extend in a longitudinal direction of the absorbent core over a length l 1  which is less than the length l 3  of the first and second rear attachment zone. Preferably, the length of the first and second front attachment zone  140 ,  150  is larger than 30 mm, more preferably larger than 40 mm, even more preferably larger than 50 mm. 
     The plurality of attachment zones  140 ,  150 ,  160 ,  170  may be permanent attachment zones which remain attached when wetted. The plurality of attachment zones may extend, seen in the transverse direction of the absorbent core, over the transverse distance which is at least 1 mm, preferably at least 3 mm, more preferably at least 4 mm, even more preferably at least 5 mm, most preferably at least 6 mm. 
     Preferably, the length of the first/second front attachment zone  140 ,  150  is larger than 5% of the length of the absorbent core: preferably larger than 10%, more preferably larger than 15%; and/or wherein the length of the first/second rear attachment zone  160 ,  170  is larger than 5% of the length of the absorbent core, preferably larger than 10%, more preferably larger than 15%. Preferably the length of the first/second front attachment zone is at least 10%, more preferably at least 25%, even more preferably at least 35%, or even at least 50 or 75% of the length of the first rear attachment zone. 
     Preferably the distance between the first and the second front attachment zone  140 ,  150  is between 15 and 70% of the width of the absorbent core (measured perpendicular on the length la), more preferably between 20 and 50%. Preferably the distance between the first and the second rear attachment zone  160 ,  170  is between 5 and 60% of the width of the absorbent core, more preferably between 10 and 40%. 
     The plurality of attachment zones comprise at least a first and a second elongate attachment zone  140 ,  150  extending next each other, at least in the front portion of the absorbent core in the direction of the first transverse edge  133 , and a third and a fourth elongate attachment zone  160 ,  170  extending next to each other, at least in the rear portion  130   b  of the absorbent core  130 , in the direction of the second transverse edge  134 . Measured in a transverse direction, a first largest distance d 12  between the first and the second attachment zone  140 ,  150  is bigger than a second largest distance d 34  between the third and the fourth attachment zone  160 ,  170 . Preferably the first distance d 12  between the first and the second attachment zone  140 ,  150  is at least 5%, more preferably at least 10% bigger, even more preferably at least 20% bigger than a second distance d 34  between the third and the fourth attachment zone  160 ,  170 . The distance d 12  between the first and the second attachment zone may be between 15 and 70% of the width of the absorbent core, more preferably between 20 and 50%; wherein preferably the distance d 12  between the first and the second attachment zone is between 10 mm and 100 mm, more preferably between 20 mm and 80 mm, even more preferably between 30 mm and 70 mm. The distance d 34  between the third and the fourth attachment zone is between 5 and 60% of the width of the absorbent core, more preferably between 10 and 40%; wherein preferably the distance d 34  between the third and the fourth attachment zone is between 5 mm and 60 mm, more preferably between 10 mm and 50 mm, even more preferably between 15 mm and 40 mm. Due to the specific physiological structure of male at the genital region, such a pattern has the advantage that liquid can be distributed over substantially the entire absorbent core, and that any leakage risks in various positions of the male wearer can be reduced. 
     It is clear to the skilled person that the first largest distance d 12  between the first and the second attachment zone  140 ,  150  may also be smaller than a second largest distance d 34  between the third and the fourth attachment zone  160 ,  170 . Such embodiment is particularly advantageous for female, due to the specific physiological structure of female at the genital region, as liquid can be distributed over substantially the entire absorbent core and leakage risks in various positions of the female wearer can be reduced. There may also be embodiments wherein d 12  and d 34  are substantially equal, which embodiments can be used for both male and female. 
     The absorbent core  130  comprises a front portion  130   a  extending between the front edge  133  and a transverse crotch line L of the absorbent core  130 , and a rear portion  130   b  extending between the rear edge  134  and the transverse crotch line L of the absorbent core  130 . Preferably a distance between the transverse crotch line L and a transverse center line T extending perpendicular on the longitudinal direction of the absorbent core  130 , through the middle of the absorbent core  130 , is smaller than 10%, more preferably smaller than 5% of the length of the absorbent core  130 . The first and the second elongate attachment zone  140 ,  150  each have a front end  142 ,  152  adjacent to absorbent material and a rear end  141 ,  151  adjacent to absorbent material; and the third and the fourth elongate attachment zone  160 ,  170  each have a rear end  162 ,  172  adjacent to absorbent material and a front end  161 ,  171  adjacent to absorbent material. In other embodiments the first zone  140  may be connected to the third zone  160  at the transverse crotch line L, and the second zone  150  may be connected to the fourth zone  170  at the transverse crotch line. 
     Seen in a projection on the longitudinal direction of the absorbent core, preferably the first and the second attachment zone  140 ,  150  extend over a length which is less than the length of the third and fourth attachment zone  160 ,  170 . The length of the first and the second attachment zone  140 ,  150  may be larger than 30 mm, preferably larger than 40 mm, more preferably larger than 50 mm. The length of the third and the fourth attachment zone may be larger than 30 mm, preferably larger than 40 mm, more preferably larger than 50 mm. The first attachment zone  140  and the second attachment zone  150  may be arranged symmetrically with respect to a longitudinal center axis of the absorbent core  130  extending between the front edge  133  and rear edge  134 . Seen in a projection on a longitudinal direction, the first and second attachment zone  140 ,  150  do not overlap with the third and fourth attachment zone  160 ,  170 . However, in other embodiments there may be some overlap. 
     The first attachment zone  140  may be separated from the third attachment zone  160  by absorbent material, and the second attachment zone  150  may be separated from the fourth attachment zone  170  by absorbent material. The absorbent material may comprise cellulosic fluff pulp and/or superabsorbent particles. In some embodiments the absorbent material may be substantially fluffless. 
     In other non-illustrated embodiments, the first attachment zone  140  may also be connected to the third attachment zone  160  through a first semi-permanent attachment zone and the second attachment zone  150  may also be connected to the fourth attachment zone  170  through a second semi-permanent attachment zone. The semi-permanent attachment may be configured to release after having been in contact with urine for a predetermined period of time, and the predetermined period of time is preferably smaller than 30 s. 
     The first and second attachment zone  140 ,  150  extend, seen in the transverse direction of the absorbent core  130 , over the transverse distance which may be at least 1 mm, preferably at least 3 mm, more preferably at least 4 mm, even more preferably at least 5 mm, most preferably at least 6 mm. The first attachment zone  140  and the second attachment zone  150  may be substantially parallel and extend in a longitudinal direction of the absorbent core  130 , as shown in  FIG. 27B ; or an angle between the first attachment zone  140  and a longitudinal direction of the absorbent core  130  and an angle between the second attachment zone  150  and the longitudinal direction of the absorbent core  130  may be smaller than 5° (not illustrated). The third attachment zone  160  and the fourth attachment zone  170  may be substantially parallel and extend in a longitudinal direction of the absorbent core  130 , as shown in  FIG. 27B ; or an angle between the third attachment zone  160  and a longitudinal direction of the absorbent core  130  and an angle between the fourth attachment zone  170  and the longitudinal direction of the absorbent core  130  may be smaller than 5° (not illustrated). Seen in a projection on a longitudinal direction of the absorbent core  130 , the plurality of attachment zones together may cover at least 30%, preferably at least 40% of a length of the absorbent core  130 . 
     Preferably the plurality of attachment zones comprise substantially no absorbent material, and may be permanent attachment zones which remain attached when wetted. In other embodiments, in the first and second attachment zone  140 ,  150 , the top core wrap sheet may be attached to the back core wrap sheet through permanent and semi-permanent attachment portions, said semi-permanent portions may be being configured to release after having been in contact with liquid whilst said permanent portions may be configured not to release after having been in contact with liquid. A position and/or shape of one or more attachment zones of the plurality of attachment zones may be indicated by means of a distinguishable color and/or colored pattern. The position and/or shape of one or more of the plurality of attachment zones may also be indicated by means of a printed ink layer. The distinguishable color and/or colored pattern may be provided on at least one of the topsheet, the top core wrap sheet, the backsheet and the back core wrap sheet. 
     The areas A 1 , A 2 , A 3  indicated in  FIG. 27B  may have a different amount of absorbent material/absorbent capacity per surface area. Preferably the central area A 3  has a larger amount of absorbent material/capacity per surface area than the intermediate area A 2 . Preferably, the intermediate area A 2  has a larger amount of absorbent material/capacity per surface area than a circumferential area A 1 . 
     Features described above for other embodiments described above may apply in a similar manner for the embodiment of  FIGS. 27A and 27B . 
     
       FIGS. 28A-E 
     
       FIGS. 28A, 28C and 28E  illustrate different embodiments of a top core wrap sheet  110  and/or bottom core wrap sheet  120  of an absorbent core.  FIGS. 28B, 28D and 28F  illustrate schematically how attachment zones may be provided by attaching the top core wrap sheet  110  to the bottom core wrap sheet  120  in the corresponding embodiments of  FIGS. 28A, 28C and 28E .  FIG. 28A  illustrates an embodiment wherein a separate top core wrap sheet  110  and separate bottom core wrap sheet  120  are provided and wherein between the top core wrap sheet  110  and bottom core wrap sheet  120  absorbent material  105  is present.  FIG. 28B  illustrates the embodiment of  FIG. 28A  wherein the top core wrap sheet  110  is attached to the bottom core wrap sheet  120  at attachment  140 . This corresponds with the embodiments as illustrated in  FIGS. 1C and 1D .  FIG. 28C  illustrates an embodiment wherein first core wrap sheet  110  is used in combination with a second core wrap sheet  120  wherein the second core wrap sheet  120  comprises a fibrous substrate layer  120   a  and absorbent material  105   a  embedded within the fibers  105   b  of substrate layer  120   a . In other words, in the embodiment of  FIG. 28B  the absorbent material is an integral part of the second core wrap sheet  120 . It is clear to the skilled person that the first core wrap sheet  110  may correspond to the top core wrap sheet and the second core wrap sheet  120  may correspond to the bottom core wrap sheet, or vice versa.  FIG. 28D  illustrates the embodiment of  FIG. 28C  wherein the top core wrap sheet  110  is attached to the bottom core wrap sheet  120  at attachment  140 .  FIG. 28E  illustrates an embodiment wherein the top core wrap sheet  110  and bottom core wrap sheet  120  are made of one piece of sheet material. In other words, the top core wrap sheet  110  is formed integrally with the bottom core wrap sheet  120 . The piece of sheet material  110 ,  120  is wrapped around the absorbent material  105  such that an upper portion of the sheet material can be considered to be the top core wrap sheet  110  and a bottom portion of the sheet material can be considered to be the bottom core wrap sheet  120 .  FIG. 28F  illustrates the embodiment of  FIG. 28E  wherein the top core wrap sheet  110  is attached to the bottom core wrap sheet  120  at attachment  140 . Preferably the attachment  140  between the top core wrap sheet  110  and the bottom core wrap sheet  120  is realized by any one of the following or a combination thereof: pressure bonding, thermo-bonding, sonic bonding, chemical bonding, adhesive, mechanical bonding. It is clear to the skilled person, that when attachment zones are described within this disclosure, the attachment between the top core wrap sheet and back core wrap sheet may be interpreted to be formed according to any one of the above described embodiments or combinations thereof. 
     
       FIG. 28 
     
       FIG. 28  illustrates a further embodiment of the absorbent core  130  of the absorbent article of  FIG. 27A . According to the embodiment of  FIG. 28 , the plurality of attachment zones comprises a first and a second attachment zone  140 ,  150  extending next to each other from a crotch region in the direction of the front edge  133 , and a third attachment zone  180  extending from the crotch region in the direction of the rear edge  134 , wherein seen in a projection on a transverse direction the third attachment zone  180  is located between the first and the second attachment zone  140 ,  150 . The first attachment zone  140  and the second attachment zone  150  are substantially parallel and extend in a longitudinal direction of the absorbent core  130 . The largest distance between the first  140  and the second attachment zone  150  is d 12 . Seen in a projection on the longitudinal direction of the absorbent core, the first and the second attachment zone extend over a length which may be less than the length of the third attachment zone. The first and the second elongate attachment zone  140 ,  150  each have a front end  142 ,  152  adjacent to absorbent material and a rear end  141 ,  151  adjacent to absorbent material; and the third elongate attachment zone  180  has a rear end  182  adjacent to absorbent material and a front end  181  adjacent to absorbent material. In other embodiments, the first attachment zone and/or the second attachment zone  140 ,  150  may be connected to the third zone  180 . This embodiment is particularly advantageous for male, due to the specific physiological structure of male at the genital region. It is clear to the skilled person that there may also be embodiments advantageous for female and/or can be used for both male and female, for example embodiments wherein the first and second attachment zone  140 ,  150  extending next to each other from the crotch region in the direction of the rear edge  134 , and the third attachment zone  180  extending from the crotch region in the direction of the front edge  133 . 
     
       FIGS. 29-35 
     
     The exemplary embodiment of  FIG. 29  is similar to the embodiment of  FIG. 27B , with the difference that the first attachment zone  140  and the second attachment zone  150  are not parallel, and diverge in the direction of a front edge  133  of absorbent core  130 . The largest distance d 12  between the first  140  and the second attachment zone  150  may be between a front end  142  of the first attachment zone  140  and a front end  152  of the second attachment zone  150 . 
     The exemplary embodiment of  FIG. 30  is similar to the embodiment of  FIG. 29 , with this difference that the first and second attachment zone  140  and  150  are substantially parallel in the crotch region and diverge in the direction of a front edge  133  of absorbent core  130 . Further, the first attachment zone  140  may be connected to the third attachment zone  160  through a first semi-permanent attachment zone  135 , and the second attachment zone  150  may be connected to the fourth attachment zone  170  through a second semi-permanent attachment zone  136 . The plurality of attachment zones may be permanent attachment zones which remain attached when wetted. The exemplary embodiment of  FIG. 31  is similar to the embodiment of  FIG. 28 , with this difference that the first attachment zone  140  and the second attachment zone  150  are not parallel as they start from a crotch region and diverge in the direction of a front edge  133  of absorbent core  130 , and become substantially parallel as they extend further in the direction of a front edge  133  of absorbent core  130 . The largest distance between the first  140  and the second attachment zone  150  d 12  may be between a front end of the first attachment zone  140  and a front end of the second attachment zone  150 . 
     The exemplary embodiment of  FIG. 32  illustrates that patterns are possible where each of the plurality of attachment zones comprise one or more sections. For example as shown in  FIG. 32 , the first attachment zone may comprise one or more sections  140 ,  140 ′, and/or the second attachment zone may comprise one or more sections  150 ,  150 ′, and/or the third attachment zone may comprise one or more sections  160 ,  160 ′,  160 ′, and/or the fourth attachment zone may comprise one or more sections  170 ,  170 ′  170 ″. 
     The exemplary embodiment of  FIG. 33  illustrates that patterns are possible where the first attachment zone  140  and the second attachment zone  150  may be connected with a transversal attachment zone  1045 ′, and/or the third attachment zone  160  and the fourth attachment zone  170  may be connected with a transversal attachment zone  1045 . The transversal attachment zones  1045 ,  1045 ′ may connect the front ends and/or rear ends of the first and the second attachment zones  140 ,  150  and/or the third and the fourth attachment zones  160 ,  170 . Furthermore, the transversal attachment zone needs not to be straight: it may be rounded as in example of  FIG. 33 , or take another shape. 
     The exemplary embodiment of  FIG. 34  illustrates that patterns are possible where the first attachment zone  140  and the second attachment zone  150  may be connected by at least one transversal semi-permanent attachment zone  1046 ,  1046 ′,  1046 ″, and the third attachment zone  160  and the fourth attachment zone  170  may also be connected with at least one transversal semi-permanent attachment zone  1047 ,  1047 ′,  1047 ″,  1047 ′″. The at least one transversal semi-permanent attachment zone may be configured to release after having been in contact with urine for a predetermined period of time, wherein said predetermined period of time is preferably smaller than 30 s. The at least one transversal semi-permanent attachment zone may be straight, or rounded, or take other shapes. 
     The exemplary embodiment of  FIG. 35  illustrates that patterns are possible that the first and second attachment zones  140 ,  150  are substantially parallel in a part of the crotch region, whilst the transverse distance between the first and second attachment zones gradually decrease in the direction of a front edge  133  of absorbent core  130 . 
     The exemplary embodiments shown in  FIGS. 28 to 35  are particularly advantageous for male, due to the specific physiological structure of male at the genital region. However it is clear to the skilled person that how to best adapt this embodiment using other configurations, such as the ones described above, to make the embodiments advantageous for female, and/or suitable for both male and female. Features for other embodiments described above may apply in a similar manner for the embodiments of  FIGS. 28 to 35 . 
     
       FIGS. 36A-P 
     
       FIGS. 36A-36P  are top views illustrating exemplary embodiment of an absorbent article comprising an absorbing core according to the invention. The absorbent core has a first and second longitudinal edge  131 ,  132  and a first and second transverse edge  133 ,  134 . For the sake of clarity it is noted that the first longitudinal edge  131  corresponds with a left longitudinal edge, the second longitudinal edge  132  corresponds with a right longitudinal edge, the first transverse edge  133  corresponds with a front transverse edge, and the second transverse edge  134  corresponds with a rear transverse edge. For the sake of clarity, it is noted that in  FIG. 36A  the position of the absorbent core  130  within the absorbent articles is schematically illustrated, along with the above described edges  131 ,  132 ,  133  and  134  of the absorbent core. Also longitudinal portions L 1 , L 2  of the absorbent core are illustrated, being separated by a longitudinal center axis CA. To reduce the complexity of the drawings, in  FIGS. 36B and 36C  merely the position of the absorbent core  130  is indicated, whereas this indication has been omitted in the rest of  FIGS. 36D-36P . However, it is clear that for  FIGS. 36D-36P  a similar positioning of the absorbent core  130  and similar definition of longitudinal zones L 1 , L 2  applies. The absorbent core  130  is provided with a plurality of attachment zones comprising at least one front attachment zone  140  and at least one rear attachment zone  160  and with at least one bridging zone  145  extending at least partially between said front and rear attachment zone. The front attachment zone  140  is positioned more to the front of the absorbent core as compared to the rear attachment zone  160 . In other words, he front attachment zone  140  is positioned closer to the front transverse edge  133  of the absorbent core as compared to the rear attachment zone  160 . Moreover, the front attachment zone  140  and rear attachment zone  150 , when projected on a longitudinal direction L of the absorbent core, do not overlap or overlap only partially. For illustrative purposes the bridging zone  145  is delineated by dotted lines between the front attachment zone(s)  140 ,  150  and the rear attachment zone(s)  160 ,  170 , thereby extending from a first longitudinal portion L 1  of the absorbent core to a second longitudinal portion L 2  of the absorbent core. It is clear that the dotted lines  145  are for illustrative purposes only and that an actual shape of the bridging zone  145  may deviate from the illustrated region surrounded by the dotted lines. Alternatively, or in addition to the dotted lines  145 , the bridging zone may be indicated in the figures by an arrow F which corresponds to a flow of liquid through the bridging zone. The first longitudinal portion L 1  may be defined between the first longitudinal edge  131  and a longitudinal center axis CA of the absorbent core and the second longitudinal portion L 2  may be defined between the second longitudinal edge  132  and the longitudinal center axis CA of the absorbent core. Depending on embodiments the wording longitudinal center axis may have a different meaning. The wording longitudinal center axis may refer to an axis in the longitudinal direction of the absorbent core and running trough the middle of the absorbent core in the transverse direction of the absorbent core, thereby dividing the absorbent core in a first longitudinal portion L 1  and a second longitudinal portion L 2 . Alternatively, or in addition the wording longitudinal center axis may refer to an axis in the longitudinal direction of the absorbent core positioned between two neighbouring longitudinal portions L 1 , L 2 . Upon wetting of the absorbent material, a front and rear channel are created at said front and rear attachment zone(s)  140 ,  150 ,  160 ,  170 , respectively, wherein the bridging zone  145  allows a liquid flow, illustrated by arrow F, between the first longitudinal portion L 1  and the second longitudinal portion L 2 , e.g. by capillary action and/or mass flow. It is clear that the arrow F is for illustrative purposes only and that an actual path of the liquid flowing through the bridging zone  145  may deviate from the illustrated arrow F. 
       FIGS. 36A-36G  illustrate embodiments wherein the absorbent core comprises one front attachment zone  140 , one rear attachment zone  160 , and a bridging zone  145  at least partially between the front attachment zone  140  and rear attachment zone  160 . In  FIG. 36A  the front attachment zone  140  and the rear attachment zone are aligned with each other and are oriented substantially along the longitudinal central axis CA of the absorbent core. Projections of the attachments zones  140  and  160  on the longitudinal direction L do not overlap. The attachment zones  140  and  160  divide the absorbent core into two longitudinal portions L 1  and L 2 . The bridging zone  145  extends between the front attachment zone  140  and the rear attachment zone  160 , from the first longitudinal portion L 1  to the second longitudinal portion L 2 . The first longitudinal portion L 1  may be defined between the first longitudinal edge  131  and the longitudinal center axis CA of the absorbent core and the second longitudinal portion L 2  may be defined between the second longitudinal edge  132  and the longitudinal center axis CA of the absorbent core. Alternatively the first and second longitudinal portions L 1  and L 2  may be defined as being separated by the front and/or rear attachments zone  140 ,  160 . However, because of the specific positioning and orientation of attachments zones  140 ,  160  in  FIG. 36A , both definitions of the longitudinal portions L 1  and L 2  result in the same configuration of the absorbent core. When a liquid insult is received on either one of the longitudinal portions L 1  or L 2 , the bridging zone  145  allows for liquid to travel to the other portion, where no liquid insult has been received. In this manner, although a liquid insult is received at one side (left or right) of the attachments zones  140 ,  150  absorbent material located at the other side (right or left) of the attachments zones  140 ,  150  can be utilized for absorbing the liquid. This results in improved overall absorbing capacity as compared to prior art absorbent articles wherein the absorbent core has no bridging zones which allow liquid communication through/over attachment zones wherein substantially no absorbent material is present.  FIG. 36B  illustrates a similar embodiment as  FIG. 36A , with the difference that the front and rear attachments zones  140 ,  160  are not aligned in  FIG. 36B , however the front and rear attachments zones  140 ,  160  are oriented substantially parallel to each other. Projections of the attachments zones  140  and  160  on the longitudinal direction L do not overlap.  FIG. 36C  illustrates a similar embodiment as  FIG. 36B , with the difference that the front and rear attachments zones  140 ,  160  in  FIG. 36C  are positioned in such a way that projections of the attachments zones  140  and  160  on the longitudinal direction L do partially overlap. This results in a bridging zone  145  which allows for liquid to flow from one longitudinal portion to the other longitudinal portion along a curved path illustrated by the arrow F. It is clear to the skilled person that liquid may also flow along a straight angled path through the bridging zone  145 , from a location more to the rear in longitudinal portion L 1  to a location more to the front in longitudinal portion L 2 . In  FIG. 36D , the front attachment zone  140  and rear attachment zone  160  are curved attachment zones. In this embodiment additional space for the bridging zone  145  is created by the curvature of the attachments zones  140  and  160 . In  FIG. 36E , a semi-permanent attachment  185  is provided between the front and rear attachments zones  140 ,  160 . In this embodiment, the semi-permanent attachment  185  is aligned with the front and rear attachment zones  140 ,  160 . In this manner, absorption capacity of the absorbent core may benefit from both capillary action and mass flow of liquid in order to enable liquid to be distributed quickly and adequately. In reaction to a first liquid insult the liquid will be distributed by mass flow by means of the channel(s) formed at the semi-permanent attachment(s). However, in reaction to further liquid insults, the semi-permanent attachment(s) will release, loosen and/or dissolve which will lead to the bridging zone allowing the liquid to pass through by capillary action. In other words, the bridging zone  145  may comprise a semi-permanent attachment  185  in a first stage of wetting, and may comprise substantially no attachments in a further stage of wetting. In  FIG. 36F  a similar configuration as illustrated in  FIG. 36E  is shown with the difference that the semi-permanent attachment  185  is oriented substantially in the transverse direction of the absorbent core. In this manner the functionality of the bridging zone via mass flow in the transverse direction is further enhanced. In  FIG. 36G , the capillary bridge comprises a fluff fibers  200  which allow for liquid to flow between the front and rear attachment zones  140  and  160 , respectively. Alternatively, or in addition a strip of airlaid fluff material may be provided at the bridging zone to further improve liquid carrying capacity of the bridging zone. 
       FIGS. 36H-36P  illustrate embodiment wherein the absorbent core comprises an additional front attachment zone  150  and/or additional rear attachment zone  170 . The absorbent core according to embodiments illustrated in  FIGS. 36H-36P  comprise one or more bridging zones. In  FIG. 36H , three bridging zones may be distinguished, one bridging zone comprising no attachments between second front attachment zone  150  and rear attachment zone  160 , one bridging zone comprising a semi-permanent attachment  185  between the first and second front attachment zones  140  and  150 , and one bridging zone comprising a semi-permanent attachment  195  between the first and second rear attachment zones  160 ,  170 . In  FIG. 36I , a first and second front attachment zone  140 ,  150  are illustrated, wherein a bridging zone is formed between the first and second front attachment zones  140 ,  150  on the one hand and the rear attachment zone  160  on the other hand. Alternatively the skilled person understands that on the one hand a first (partial) bridging zone is formed between the first front attachment zone  140  and the rear attachment zone  160 , and that on the other hand a second (partial) bridging zone is formed between the second front attachment zone  150  and the rear attachment zone  160 . In  FIG. 36J , a similar embodiment as illustrated in  FIG. 36I  is shown, with the difference that a projection of the rear attachment zone  160  on the longitudinal direction L now partially overlaps with the projection of the first front attachment zone  140  and/or projection of the second front attachment zone  150 , which result in the bridging zone taking a curved form through which liquid can flow between and/or passed the front and rear attachment zones. In  FIG. 36K , a first and second rear attachment zone  160 ,  170  are illustrated, wherein a bridging zone is formed between the first and second rear attachment zones  160 ,  170  on the one hand and the front attachment zone  140  on the other hand. Alternatively the skilled person understands that on the one hand a first (partial) bridging zone is formed between the first rear attachment zone  160  and the front attachment zone  140 , and that on the other hand a second (partial) bridging zone is formed between the second rear attachment zone  170  and the front attachment zone  160 . This is illustrated by semi-permanent attachments  185  and  195 . In  FIG. 36L , a first and second rear attachment zone  160 ,  170  are illustrated, wherein a bridging zone, comprising substantially no attachments, is formed between the first and second rear attachment zones  160 ,  170  on the one hand and the front attachment zone  140  on the other hand. Alternatively the skilled person understands that on the one hand a first (partial) bridging zone, comprising substantially no attachments, is formed between the first rear attachment zone  160  and the front attachment zone  140 , and that on the other hand a second (partial) bridging zone, comprising substantially no attachments, is formed between the second rear attachment zone  170  and the front attachment zone  160 . In  FIGS. 36M-36P , a first and second front attachment zone  140 ,  150  are illustrated in combination with a first and second rear attachment zone  160 ,  170 . In  FIGS. 36M and 36N  a bridging zone comprising substantially no attachments is formed between the front attachments zones  140 ,  150  and the rear attachment zones  160 ,  170 . In  FIG. 36O , the bridging zone comprises a semi-permanent attachment  185  between the first front attachment zone  140  and the first rear attachment zone  160 , and a semi-permanent attachment  195  between the second front attachment zone  150  and the second rear attachment zone  170 . In  FIG. 36P , a bridging zone is provided between the front attachment zones  140 ,  150  and the rear attachment zones  160 ,  170  which bridging zone comprises fluff fibers and/or a strip of airlaid fluff material. In the embodiments of  FIGS. 36M-36P , the first front attachment zone  140  and the second front attachment zone  150  are arranged symmetrically with respect to the longitudinal center axis of the absorbent core. Preferably the distance between the first and the second attachment zone is between 20 mm and 70 mm, more preferably between 30 mm and 60 mm, even more preferably between 40 mm and 55 mm. Especially for male persons, this distance is preferably sufficiently large such that urine is captured mainly in the area between the first front attachment zone  140  and the second front attachment zone  150 . 
     The first front attachment zone  140  and the second front attachment zone  150  may be substantially parallel and may extend in a longitudinal direction of the absorbent core  130  as illustrated in  FIGS. 36M, 36O and 36P . Alternatively an angle between the first front attachment zone  140  and a longitudinal direction of the absorbent core and an angle between the second front attachment zone  150  and the longitudinal direction of the absorbent core may be smaller than 5° such as illustrated in  FIG. 36N , wherein the first and second front attachment zones  140 ,  150  diverge in the direction of the front transverse edge  133 . 
     Preferably, a minimal width of the bridging zone  145  is at least 5 mm, preferably at least 10 mm and more preferably at least 15 mm. In this manner, a sufficient width is available to allow liquid to flow and/or travel through the bridging zone  145 . The minimal width of the bridging zone  145  is the smallest distance between the front attachment zone  140 ,  150  and the rear attachment zone  160 ,  170  between which liquid is allowed to flow by means of the bridging zone. 
     It is clear to the skilled person that in the above described embodiments, alternatively or in addition to bridging zones comprising substantially no attachments, bridging zones comprising at least one semi-permanent attachment can be provided, and vice versa. It is further clear to the skilled person, that although not explicitly indicated in  FIGS. 15-26 , these figures may illustrate alternative bridging zone configurations wherein liquid flow is enabled from one longitudinal portion to another longitudinal portion of the absorbent core wherein the liquid passes between at least one front attachment zone and one rear attachment zone. 
     It is further clear to the skilled person that in the above described embodiments, alternatively or in addition to bridging zones comprising semi-permanent attachments which are substantially aligned with the front and/or rear attachments zones  140 ,  150 ,  160 ,  170 , semi-permanent attachments may be provided which are positioned either substantially perpendicular to the front and/or rear attachments zones  140 ,  150 ,  160 ,  170 , or positioned in substantially the transverse direction of the absorbent core  130 . In this manner, mass flow across and/or between and/or throughout the front and/or rear attachments zones is improved in a first stage of wetting. In a second stage of wetting, when the semi-permanent attachments have resolved, capillary action can take place to allow liquid flow across and/or between and/or throughout the front and/or rear attachments zones or the corresponding channels formed thereby. 
     
       FIGS. 37-41 and 42A-42B 
     
       FIG. 37  illustrates an exemplary embodiment of a mechanical removal means. The locally removing of the absorbent material F may be done by a first roller brush  16 . The first roller brush  16  is mounted above the first sheet material  110  on the rotating member  10 , downstream of the hopper  40 . Optionally, the first roller brush  16  may be mounted above the first sheet material  110  on the rotating member  10 , directly downstream of a lower opening of the hopper  40 . The axis of the first roller brush  16  is parallel to the axis of the rotating member  10 . The rotation of the first roller brush  16  may be driven by a first variable-speed motor. Speed and/or direction of the rotating movement of the first roller brush  16  may be adjustable. The rotational movement of the first roller brush  16  scrapes or sweeps the absorbent material F applied on the attachment portions  14  such that substantially no absorbent material F is present on the attachment portions  14 , and the remaining portions  21  are still covered with absorbent material F. A distance between the first roller brush  16  and the first sheet material  110  may be adjustable by a further first adjusting means. Further, as illustrated in  FIGS. 42A and 42B , a second roller brush  19  may be provided downstream of first roller brush  18 , in order to flatten the layer o absorbent material on the suction zones  13 ,  13 ′. The speed and/or direction of the rotating movement of the second roller brush  19 , and/or the distance between the second roller brush  19  and the first sheet material  110 , may be adjusted depending on the material of the first sheet material  110  and/or the material of the absorbent material F and/or the channel(s) that are intended to be made. 
     In other embodiments, the locally removing of the absorbent material F may be done by an air jet system  18  as illustrated in  FIG. 41 , see further. 
     The removed absorbent material F may be discarded and/or collected and/or recycled by a further discharge means  23 , such that the removed absorbent material can be further used. The discharge means preferably comprises a vacuum source to collect the removed absorbent material. In a fourth step a second sheet material  120  is applied on top of the absorbent material on the first sheet material  110 , e.g. using a further rotating member  20 . One of said first and second sheet material is a top core wrap sheet material, and the other one is a back core wrap sheet material. In the illustrated embodiment it is assumed that the first sheet material  110  is the top core wrap sheet material. 
     In a fifth step the first sheet material  110  is attached to the second sheet material  120  at least in the attachment portions  14 , and such that attachment zones  140  are formed. The attaching may be done by applying pressure and/or heat on the top core wrap sheet material  110  and/or on the back core wrap sheet material  120  in the attachment portions  14 , e.g. by a rotating member  30  and/or opposite rotating member  30 ′ which is provided with at least a first and a second seal rib  31 ,  32  dimensioned for applying pressure and/or heat on the top core wrap sheet material  110  in the attachment portions  14  in order to create the attachment zones  140 . Additionally or alternatively adhesive may be applied to the back and/or top core wrap sheets, to release the bond between the top and back core wrap sheets, e.g. using the methods described in the embodiments above.  FIG. 38  shows a cross section of a first exemplary embodiment of a first roller brush  16  being applied above a first sheet material  110 . After the absorbent material F is applied via a hopper  40  on said first sheet material  110  on the rotating member  10  (as explained in connection with  FIG. 37 ) with non-suction zones  11 ,  12  and suction zones  13 , attachment portions  14  of the first sheet material located above the non-suction zones  11 ,  12 ;  11 ′,  12 ′ and remaining portions  21  of the first sheet material located above the suction zones  13 ,  13 ′ are covered with the absorbent material F. 
     However, because of the suction effect more material will be sucked above the suction zones  13 ,  13 ′. The first roller brush  16  has bristles  22  which may have substantially the same length, the tips of which create a more or less even cylinder-shaped surface around the first roller brush  16 . As the first roller brush  16  rotates, the bristles  19  scrape or sweep the absorbent material applied on the first sheet material  110  such that substantially no absorbent material F remains present on the attachment portions  14 , whilst the remaining portions  21  remain covered with absorbent material. The bristles  22  of the first roller brush  16  may comprise a flexible material, preferably plastic, e.g. nylon, such that damage to the first sheet material  110  can be prevented or reduced during the removal of absorbent material. 
       FIG. 39  shows a cross section of a second exemplary embodiment of a first roller brush  16  having an axis A 1  and being applied above a first sheet material  110  on a rotating member  10  and with non-suction zones  11 ,  12  and suction zones  13 . In this embodiment, the bristles  22   a ,  22   b  are amounted on the first roller brush  16  to target the attachment portions  14  of the first sheet material  110  located above the non-suction zones  11 ,  12 . The advantage of this embodiment is that it results in a more specific removal of absorbent material F on the attachment portions  14 , without effecting or with minimal effects on the absorbent material F on the remaining portions  21  of the first sheet material  110 . The bristles  22   a ,  22   b  of the first roller brush  16  may comprise a flexible material, preferably plastic, e.g. nylon, such that damage to the first sheet material  11  can be prevented or reduced during the removal of absorbent material. The position of the bristles  22   a ,  22   b  targeting the attachment portions  14  may be configured to be adjustable depending on the size of the articles to be made, and/or the intended position of the channels, and/or other configurations known to a skilled person. 
       FIG. 40  shows a cross section of a third exemplary embodiment of a first roller brush  16  being applied above the first sheet material  110  on a rotating member  10  with non-suction zones  11 ,  12  and suction zones  13 . In this embodiment, the bristles  22   a ,  22   b .  22   c  form a stepped profile with bristle zones  22   a ,  22   b  located above the attachment portions  14  and zones  22   c  above the remaining portion. The bristles  22   c  are preferably less flexible and/or less bendable that the bristles  22   a ,  22   b . Preferably the length of the bristles  22   a ,  22   b  targeting the attachment portions  14  is longer than the length of the bristles  22   c  targeting the remaining portions  21 . The bristles  22   a .  22   b ,  22   c  of the first roller brush  16  may comprise a flexible material, preferably plastic. e.g. nylon, such that damage to the first sheet material  11  can be prevented or reduced during the removal of absorbent material. In a further embodiment, the bristles  22   a .  22   b  targeting the attachment portions  14  comprise a flexible material, preferably plastic, e.g. nylon, while the bristles  22   c  targeting the remaining portions  21  comprise a rigid material, such as metal, such that while the bristles  22   a ,  22   b  targeting the attachment portions  14  remove the absorbent material on the attachment portions  14 , the bristles  22   c  targeting the remaining portions  21  scrapes the absorbent material applied on the remaining portions  21  to make the surface of the absorbent material even. 
       FIG. 41  shows a cross section of an exemplary embodiment of an air jet system  18  being applied above the first sheet material  110  on a rotating member  10  with non-suction zones  11 ,  12  and suction zones  13 . The air jet system is configured to blow air onto the attachment portions  14  to remove the absorbent material F thereon. Position of the air outlets  24   a ,  24   b  of the air jet system  18  may be configured to be adjustable depending on the size of the articles to be made, and/or intended position of the channels, and/or other configurations known to a skilled person. A second roller brush  19  may be implemented in the apparatus, in combination with the first roller brush  16  or in combination with the air jet system  18  as is shown in  FIGS. 42A and 42B  respectively. The two brushes  18 ,  19  may be arranged in series, wherein the task of brush  18  is to perform cleaning of the attachment portions  14 , and the task of brush  19  is to make the surface of the absorbent layer on the remaining portion  21  more even. The material of the bristles of brush  18  is preferably more flexible that the material of the bristles of brush  19 . The second roller brush  19  is configured to scraping the absorbent material applied on the remaining portions  21  such that surface of the absorbent material F is even. Preferably bristles of the second roller brush  19  comprise a rigid material, such as metal. Preferably the second roller brush  19  is mounted above the first sheet material  110  on the rotating member  10 , downstream of the first roller brush  16 , or downstream of the air jet system  18 . Optionally, the first roller brush  16  may be mounted above the first sheet material  110  immediately downstream of the lower opening of the hopper  40 . The axis A 2  of the second roller brush  19  is parallel to the axis A of the rotating member  10 . The rotation of the second roller brush  19  may be driven by a second variable-speed motor. Speed and/or direction of the rotating movement of the second roller brush  19  may be adjustable. The rotational movement of the second roller brush  19  scrapes the absorbent material remaining on the remaining portions  21  such that the absorbent material creates an even surface on the remaining portions  21 . A distance between the second roller brush  19  and the first sheet material  110  may be adjustable by a further second adjusting means (not shown). The speed and/or direction of the rotating movement of the second roller brush  19 , and/or the distance between the second roller brush  19  and the first sheet material  110 , may be adjusted depending on the material of the first sheet material and/or the material of the absorbent material and/or the channel(s) that are intended to be made, and/or other configurations known to a skilled person. 
     The above-described method may yield an absorbent article with higher dry and especially wet integrity and which avoids unwanted migration of absorbent material, while avoiding the risk of damaging the attachment zones during manufacture which may impede the formation of channels. The skilled person will understand that this method is not limited to this particular configuration of attachment zones and will know how to best adapt the binder application zones on the first and second sheet materials  110 ,  120  for other configurations, such as the ones described in the present application. More in particular the skilled person understands that the method is also useful for absorbent cores with only one attachment zone or with more than two attachment zones. 
     In non-illustrated embodiments, the brushes  18  may be provided with flexible scraping or wiping element, at least in the zones of the attachment portions  14 , instead of with a plurality of bristles. In yet other embodiments the brushes  18  may be replaced with other local mechanical removing means. e.g. a non-rotating mechanical removal means such as a scraper or wiper in combination with a suction means to suck the material scraped off in the attachment portions  14 . 
     It is further noted that the use of a brush  18  in not required in all embodiments of the invention. In certain embodiments, the inserts  11 ,  12  may have a shape and height which is such that substantially no absorbent material is present on the attachment portions  14 . Increasing the height od the inserts  11 ,  12  may be useful when the layer of absorbent material F is thicker. The inserts  11 ,  12  in  FIG. 10A  have a trapezoidal shape with a bottom side B 1 , a top side B 2 , and a height H. However other shapes are possible. Also, the dimensions may vary. The height H may be e.g. between 2 and 10 mm, preferably between 3 and 7 mm. The inserts may be removably fixed so that they can be easily changed in function of the materials used. 
     Whilst the principles of the invention have been set out above in connection with specific embodiments, it is to be understood that this description is merely made by way of example and not as a limitation of the scope of protection which is determined by the appended claims.