Source: https://patents.google.com/patent/WO2018180264A1/en
Timestamp: 2019-06-19 21:18:35
Document Index: 135894617

Matched Legal Cases: ['art 66', 'art 80', 'art 80', 'arts 13', 'art 80', 'art 68']

WO2018180264A1 - Tape-type disposable diaper and method for manufacturing tape-type disposable diaper - Google Patents
Tape-type disposable diaper and method for manufacturing tape-type disposable diaper Download PDF
WO2018180264A1
WO2018180264A1 PCT/JP2018/008471 JP2018008471W WO2018180264A1 WO 2018180264 A1 WO2018180264 A1 WO 2018180264A1 JP 2018008471 W JP2018008471 W JP 2018008471W WO 2018180264 A1 WO2018180264 A1 WO 2018180264A1
PCT/JP2018/008471
友記 岡田
勉 古川
森　洋介
2017-03-28 Priority to JP2017-063581 priority Critical
2017-03-28 Priority to JP2017063581A priority patent/JP6456999B2/en
2017-03-30 Priority to JP2017067003A priority patent/JP6457004B2/en
2017-03-30 Priority to JP2017-067003 priority
2018-03-06 Application filed by 大王製紙株式会社 filed Critical 大王製紙株式会社
2018-10-04 Publication of WO2018180264A1 publication Critical patent/WO2018180264A1/en
The present invention addresses the problem of obtaining a wide stretching range in a waist stretching sheet. The problem is addressed by a tape-type disposable diaper characterized by being provided with a body (10) that has a fastening tape (13) and a waist stretching sheet (90) on the backside portion (B), wherein the body (10) has a folded portion (80) in which a lateral part including a portion having a non-stretching region (96) of the waist stretching sheet (90) is folded toward the center and fixed.
Tape type disposable diapers, and method of manufacturing the tape type disposable diapers
The present invention is a disposable diaper of the so-called tape type, and a process for producing a tape type disposable diaper.
The disposable diapers, mainly there is a tape type, pants type, three kinds of pad type. Among them, disposable diaper tapes type is to perform the mounting by connecting After held against the body in the deployed state, the fastening tapes projecting from both side portions of the back side portion to the outer surface of the ventral side portion.
Common tape types disposable diaper includes a main body having a dorsal portion extending ventral portion and rearward of the front-rear direction center extending forward of the front-rear direction central, from both sides of the dorsal portion It has a fastening tape projecting respectively, upon attachment to the body, the fastening tape from both sides of the waist turning the outer surface of the ventral side portion has a structure for coupling to the outer surface of the ventral side portion. Such tape-type disposable diaper, except that used as for infants and young children, are widely used in nursing applications (adult use).
Tape type disposable diapers, poor fit of the waist direction compared to the pants-type disposable diapers. Accordingly, or provided stretchable region in the width direction in the waist portion of the back side portion, it has been proposed to enhance the fit of the waist or by providing a stretchable region in the width direction to the fastening tape (e.g., Patent references 1 to 3).
In particular, it provided with a back-side portion stretchable region in the width direction in the waist portion of the the fastening tape provided stretchable region in the width direction is preferable because it can impart more extensive stretch.
However, as described in detail in Patent Document 3, when forming a waist stretchable sheet having a width direction of the stretch, the stretchable region of the built not in the width direction waist portion of the back side portion, waist stretchable sheet When having stretchability to both widthwise end portions of wrinkles and curling occurs in both widthwise end portions of the waist stretchable sheet during manufacture, there is a possibility that the appearance of the product state is deteriorated.
Therefore, conventionally, it is impossible to provide a stretchable region over the entire width of the waist elastic sheet was not able to impart sufficient stretchability to the waist only waist stretchable sheet. Further, fastening even provided the tape stretching region, spaced both stretchable region considerably width direction, it is difficult to form a continuous stretch region spanning the left and right of the fastening tape.
JP 2010-22550 JP JP 2005-152168 JP JP 2008-29749 JP JP 2011-072736 JP
Therefore, a main object of the present invention, in order to enhance the fit of the waist, is to make it take a wide stretch range of waist stretchable sheet.
Representative aspects of the present invention which has solved the above problems is as follows.
A body having a dorsal portion extending ventral portion and rearward of the front-rear direction center extending forward of the front-rear direction central,
A fastening tape to protrude from both sides of the waist portion of the back side portion,
Has a waist elastic sheet provided in the waist portion of the back side portion,
The fastening tape has said dorsal waist part base end attached to the portion, and a connecting portion which is detachably coupled to the outer surface of the ventral side portion,
The waist stretchable sheet together with the both widthwise end portions in the non-stretchable region, the portion between these non-stretchable regions has a body expansion area that expands and contracts in the width direction,
In the tape type disposable diapers,
The body side portion includes a portion having the non-stretchable region has a folded portion which is secured by folding back toward the center,
Tape type disposable diaper, characterized in that.
(Effect and Operation)
In this embodiment, since the portion having the non-stretchable region in the body is fixed by being folded back toward the center, reducing the width of the non-stretchable region of the waist stretchable sheet occupying the width of the body (inevitably be formed) be able to. As a result, it is possible to widen the flexible range of waist stretchable sheet.
The fastening tape has a tape stretchable region that expands and contracts in the width direction provided in the portion between the proximal portion and the connecting portion,
The proximal end of the tape stretching region, to lie within a range of ± 5 mm from the side edge of the main body expansion area in the width direction, the fastening tape is attached to the body,
Tape type disposable diaper of the first aspect.
In this embodiment, since the portion having the non-stretchable region in the body is fixed by being folded back toward the center, reducing the width of the non-stretchable region of the waist stretchable sheet occupying the width of the body (inevitably be formed) be able to. As a result, it is possible to improve the continuity of the stretchable region spanning the left and right of the fastening tape.
An absorber,
A liquid impervious sheet covering the rear side of the absorber,
And outer sheet covering the back side of the liquid-impermeable sheet,
A side flap portion located outside the side edges of the absorbent body,
Fixed base portion in a region including the side flaps, and the gather sheet to form a protruding portion extending out from the base portion, and a collapsed portion both front-back ends is fixed to the inclined state of the projecting portion, and unfixed rising portion located between the lodging portion of the front and rear of said projecting portion, at least the tip portion of the rising portion, and gathers rising and a gather elastic member secured in a stretched state in the longitudinal direction,
The waist stretchable sheet, the body stretchable region extends over the left and right side flaps,
The side flaps, the gather sheet, the liquid impermeable sheet, wherein the waist elastic sheet, and a said portion outer sheet are stacked,
The folded portion is formed in the side flaps, the gather sheets, at least a portion, and the portion where the exterior sheet is folded back on the front side of the non-stretchable region of the waist stretchable sheet,
The rear surface of the minute with the folded portion in the side flaps, the base end portion of the fastening tape is attached,
Tape type disposable diapers of the second aspect.
If you have a portion having a waist stretchable sheet and the fastening tapes of the present embodiment, the folded portion may be a structure of this embodiment. In this case, the base end portion of the fastening tape, by being attached to the rear surface of minutes with a folded portion of the side flaps, as the strength of the portion forces in use is concentrated (the attachment portion of the fastening tape) is high not only, a force to peel off the folded portion is also brought the advantage of not applied. Or by the proximal end portion of the fastening tape is not attached to the skin side, is not compromised soft skin-side surface.
The folded portion is formed in the side-flap portions, at least a portion, and the portion where the exterior sheet is folded back on the front side of the non-stretchable region of the waist stretchable sheet,
Front side of the folded portion is covered by the side portion of the gather sheet,
Wherein between the folded portion and the side portion of the gather sheet in side-flap portions, a base end portion of the fastening tape is attached,
If you have a portion having a waist stretchable sheet and the fastening tapes of the present embodiment, the folded portion may be a structure of this embodiment. In this case, the base end portion of the fastening tape, by which is attached to the folded portion of the side-flap portions, becomes the strength of the portion forces in use is concentrated (the attachment portion of the fastening tape) is high. Or the proximal end of the fastening tape is not exposed, and has front side of the folded portion is covered by the side portion of the gather sheet, by hard material of such outer sheet is not exposed, is not impaired skin.
<Fifth aspect of>
The folded portion is formed in the side flaps, the gather sheets, at least a portion, and the portion where the exterior sheet is folded on the back side of the non-stretchable region of the waist stretchable sheet,
If you have a portion having a waist stretchable sheet and the fastening tapes of the present embodiment, the folded portion may be a structure of this embodiment. In this case, the base end portion of the fastening tape, by which is attached to the folded portion of the side-flap portions, becomes the strength of the portion forces in use is concentrated (the attachment portion of the fastening tape) is high. Further, the front side of the folded-back portion consists gather sheet, and by the base end portion of the fastening tape is not attached to the skin side, is not compromised soft skin-side surface.
<A sixth aspect of>
The folded portion does not include the liquid-impermeable sheet,
Tape type disposable diaper of any one aspect of the 3-5.
Folded portion increases the thickness, and is easy to become hard, it is preferable that a structure that does not include a particular hard prone liquid impervious sheet.
<Seventh aspect of>
The fastening tape includes: the base end portion fixed to the rear surface of the body, this has a fastener free portion extending out laterally from the proximal end, the fastener free portion side edge of the main body in has a fastener folded portion folded back on the upper side of the folded portion,
The fastener folded portion, at a portion overlapping the folded portion of the body, is releasably tacking said folding portion of the body,
Tape type disposable diaper of any one aspect of the first to sixth.
In this embodiment, the fastening tape is disposed on the outside of the body, the proximal end portion of the fastening tape is fixed on the back side of the body. Further, the turned back portion to the body has a fastener folded portion on the outside thereof, the fastener folded portions are releasably tacking the folding portion of the body. Site Such a structure, in the production, in a state of development before the formation of the folded portion of the body, together with the portion as the base end portion of the fastening tape to a portion to be a rear side of the body is located, which is a folded portion of the body until placing the fastening tape so as to extend, a portion serving as a base end portion of the fastening tape is fixed to the body, after temporarily fixed releasably to the portion which becomes the fastening tape the folded portion of the body, both sides of the body and folding the fastening tape integrally, it can be produced by forming a folded portion and a fastener folded portion of the body. That is, when folded machining, fastening tape because it is integrated with the main body at two positions of the proximal and tacking portion, it is less likely to be inappropriate folding of the fastening tape. As a result, according to this embodiment, it is possible to effectively prevent displacement of the folded portion of the fastening tape.
Since the fastener folded portion of the fastening tape has only been temporarily fixed to the folded portion of the body, in use, by peeling the temporarily fixed so as to deploy the fastener folded portion laterally, fastening tapes portion having a connecting portion is in a state projecting from a side edge of the folded portion of the body, except with a folded portion in the body, can be used without changing the conventional.
<Aspect of the eighth>
The fastener folded portion has the connecting portion in a portion overlapping the folded portion of the body,
The fastener folded portion is temporarily fixed to the folded portion of the body by the connecting portion,
The connecting portion includes a temporary fixing portion is temporarily fixed to the folded portion of the body, located in the back portion widthwise central side of the widthwise central side edge of said main body, said folded portion of said body and a temporary stop that is not protruding portion,
Tape type disposable diapers of the seventh aspect of the.
Connecting portions of the fastener folded portion may be temporarily fixed in its entirety to the folded portion of the body, but a part of the portion protruding by positioning in the width direction center side of the folded portion of the body of the connecting portion as in this embodiment When formed, when deploying fastener folded portion is preferable because the connecting portion is likely to peel.
<A ninth aspect of>
The gather sheet is not extend only to the end portion in the width direction central side of the folded portion of the body,
Tape type disposable diaper embodiment of the seventh or eighth.
Portion having a folded portion of the body thickness is increased by the folding, and is easily damaged breathability and flexibility, as in the present embodiment, when narrowing the width of the gather sheet, folded portion of the body of the exterior sheet and gather sheet DOO can overlap can be reduced an area where the thickness is increased, preferably possible to suppress a decrease in the breathability and flexibility.
<Tenth aspect of>
Said extends to the back portion the rising portion in said rising gathered body, and is joined to the rising gathers,
As in the present embodiment, the folded portion of the body, standing up when covering the outer rising portion of the gather can be rising number of stacked gather the material is increased, thereby improving the liquid-impermeable. In particular, it is preferable if no built-in water-impervious film rising the gather.
<Eleventh aspect of>
The most rear side of the seat of the body is a porous nonwoven hole penetrating the front and back are provided a number at intervals, has a large number of the holes in the folded portion of at least said main body,
Tape type disposable diaper of any one aspect of the 7-10.
Portion having a folded portion of the body thickness is increased by the folding, and is easily damaged breathability and flexibility, as in the present embodiment, the perforated nonwoven having excellent flexibility and breathability to form a folded portion of the body the preferred.
<Twelfth aspect of>
The folded portion of the body, to the sheet adjacent to the back side of the folded portion of the body, are joined with a hot melt adhesive which is arranged in an intermittent pattern,
Portion having a folded portion of the body thickness is increased by the folding, and is easily damaged breathability and flexibility, as in this embodiment, fixed by intermittently bonding the folded portion of the body, the regions having a folded portion of the body it is preferable to suppress a reduction in air permeability and flexibility in.
<Thirteenth aspect of>
A method of manufacturing a tape type disposable diaper of the seventh aspect,
In the state of development before forming the folded portion of the body, together with the portion as the base end portion of the fastening tape to a portion to be a rear side of the main body is positioned, extend to the site to be the folded portion of the body to, said fastening tape was placed against the body, as well as fix the portion to be the base end portion of the fastening tape to the body, the fastening tape to be peeled off the site to be the folded portion of the body tentative a step of stopping,
Folding the side portions and the fastening tape of the main body integrally and forming the folded portion and the fastener folded portion of the body,
Characterized in that it comprises a method of producing a tape type disposable diaper.
According to this aspect, it is possible to achieve the same effect as the seventh aspect. That is, in folding process, the fastening tape because it is integrated with the main body at two positions of the proximal and tacking portion, is less likely to be inappropriate folding of the fastening tape. As a result, according to this embodiment, it is possible to effectively prevent displacement of the folded portion of the fastening tape.
As described above, according to the present invention, it is possible to widen the flexible range of waist stretchable sheet, it is possible to enhance the fit of the waist with, advantages such is provided.
Showing the inner surface of the tape type disposable diaper, a plan view of a state in which the expansion of the diaper. Shows the outer surface of the tape type disposable diaper, a plan view of a state in which the expansion of the diaper. It is a cross-sectional view taken along line 5-5 of FIG. It is a sectional view taken along line 6-6 of FIG. (A) 7-7 line sectional view of FIG. 1 is a cross-sectional view taken along line 8-8 of FIG. 1 (b). (A) a plan view of the waist stretchable sheet, (b) cross-sectional view of the waist stretchable sheet, (c) a plan view of the fastening tape is a cross-sectional view of (d) fastening tape. Is a sectional view showing an enlarged main portion of the side gathers part. It is a sectional view showing an enlarged portion having a waist stretchable sheet and the fastening tape. In another embodiment, it is a cross-sectional view showing an enlarged portion having a waist stretchable sheet and the fastening tape. In another embodiment, it is a cross-sectional view showing an enlarged portion having a waist stretchable sheet and the fastening tape. In another embodiment, it is a cross-sectional view showing an enlarged portion having a waist stretchable sheet and the fastening tape. (A) a plan view of the fastening tape is a cross-sectional view of (b) fastening tape. In another embodiment, it is a cross-sectional view showing an enlarged portion having a waist stretchable sheet and the fastening tape. Is a sectional view showing an enlarged main portion of the side gathers part. Showing the inner surface of the other tape types disposable diaper is a plan view of a developed state (fastener assembly folded state). It shows the outer surface of the other tape types disposable diaper is a plan view of a developed state. Is a sectional view taken along line 4-4 in FIG. 15. It is a cross-sectional view taken along line 9-9 of FIG 15. (A) a plan view of the fastening tape is a cross-sectional view of (b) fastening tape. (A) step of assembling the fastener assembly is a main part enlarged perspective view illustrating each folding step, and (c) using the state of (b) the fastener assembly.
Hereinafter will be described with reference to the accompanying drawings embodiments of the present invention. Although the point pattern portion in sectional view shows a hot melt adhesive for bonding the respective constituent members, in place of the hot-melt adhesive, or using other adhesives, heat sealing, welding, such as ultrasonic sealing it goes without saying that it may be joined by or used. The direction in the following description means a direction connecting the "longitudinal direction LD (longitudinal direction)" and ventral (anterior) and dorsal (back), perpendicular to the longitudinal direction of the "width direction WD" means (left and right direction).
1 to 7 show an example of a tape type disposable diaper. The tape type disposable diaper has a front-rear direction center C ventral portion F extending in front of the, and the back-side portion B which extends rearward of the front-rear direction central C, dorsal ventral portion F an absorber 56 disposed toward the side portion B in the middle portion in the width direction WD, a liquid-permeable topsheet 30 covering the front side of the absorbent body 56, a liquid impervious sheet 11 covering the back side of the absorbent body 56 a main body 10 having, protruding from both sides of the waist portion of the back side portion B of the main body 10, and a fastening tape 13 that connects the ventral portion F and the dorsal portion B. Body 10 extends to the front and rear than the absorbent body 56, and the end flap portion EF has no absorbent body 56, extend laterally than the absorbent body 56, and a side flap portions SF does not have an absorption body 56 It has.
Body 10, like the common tape type disposable diaper, if the width is wider than the width of the crotch portion (in other words of the waist portion of the ventral side portion F and dorsal portion B, and constricted portion along the leg- or as an intermediate to have) the form of the longitudinal direction LD is, Yes in order to eliminate the need for cutting, the width of the diaper is the same as the width of the crotch portion over the length (in other words constricted portion as in the illustrated example also preferable to a non rectangular) form.
More particularly, in the illustrated example, the entire outer surface of the body 10 is formed by the outer sheet 12, a liquid impervious sheet 11 is fixed by an adhesive such as a hot melt adhesive on its inner surface side, further the liquid absorbent element 50 comprising an absorbent body 56 on the inner surface of the impermeable sheet 11, intermediate sheet 40 and top sheet 30 are laminated in this order. The topsheet 30 and the liquid impervious sheet 11 is rectangular in the illustrated example, the absorbent element 50 has a slightly larger dimension in the longitudinal direction LD and the width direction WD than the side edges of the absorbent element 50 in the topsheet 30 and more protruding peripheral portion, and the peripheral portion protrude from the side edges of the absorbent element 50 in the liquid impervious sheet 11 is fixed by a hot-melt adhesive. This portion becomes part of the end flap portions EF and the side flap portions SF.
Further, on both sides in the width direction WD at the surface of the body 10, are raised up gathers 60, 60 rises to the skin side of a wearer is provided, the gather sheet 62 for forming the rising gathers 60, 60, top It is extended to the side flap portions SF from both sides of the sheet 30.
The following describes the material and characteristic portion of each section in order.
(Outer sheet)
Outer sheet 12 is provided to the rear surface of the disposable diaper and skin-like appearance of the fabric. It is preferred nonwoven fabric as the outer sheet 12, but is not limited thereto. Type of the nonwoven fabric is not particularly limited, as the material fibers, for example, olefin such as polyethylene or polypropylene, polyester, other synthetic fibers, polyamide, etc., used regenerated fibers such as rayon or cupra, natural fibers such as cotton it can, spunlace method as machining processes, spunbonding processes, can be used thermal bonding method, air-through method, a needle punching method or the like. However, feel and strength spunbond nonwoven fabric or SMS nonwoven in that it can both, the long-fiber nonwoven fabric, such as SMMS nonwoven is preferable. Nonwoven addition to using a piece may also be used in stacked plurality. In the latter case, it is preferable to adhere the nonwoven 12 each other by hot melt adhesive or the like. When using a nonwoven fabric, the fiber basis weight is 10 ~ 50g / m 2, is desirable especially in 15 ~ 30g / m 2. Outer sheet 12 may be omitted, in which case, it is possible to form the liquid impervious sheet 11 on the back surface of the disposable diaper is exposed.
(Liquid-impermeable sheet)
Material of the liquid impervious sheet 11 is not particularly limited, for example, olefin resins such as polyethylene and polypropylene, laminate non-woven fabric obtained by laminating a nonwoven fabric on the polyethylene sheet or the like, substantially by interposing a waterproof film the liquid-impermeable nonwoven (in this case, a liquid-impermeable sheet and the waterproof film and the nonwoven fabric is composed.) ensuring the like can be exemplified a. Of course, the addition to, recently, a material having a liquid-impermeable and vapor-permeable is used are preferred from the viewpoint of stuffiness prevention can also be exemplified. As a material for the sheet with the liquid-impermeable and moisture vapor permeable, for example, by kneading an inorganic filler in an olefin resin such as polyethylene and polypropylene, after forming the sheet was stretched uniaxially or biaxially the microporous sheet was collected using can be exemplified. Further, a nonwoven fabric using a microdenier fiber, leak-proof property strengthening by reducing the voids of the fibers by application of heat and pressure, by a method such as coating of the superabsorbent resin or hydrophobic resin and water repellent, waterproof film even sheets and liquid-impermeable without using it can be used as liquid-impermeable sheet 11.
Liquid impervious sheet 11 of the illustrated example, wider width than the topsheet 30 slightly, the width from the outer sheet 12 is narrow, is not limited to this, the liquid impervious sheet 11 and outer sheet 12 such as the same width can be changed as appropriate.
(Top sheet)
The topsheet 30 having a liquid-permeable, for example, nonwoven fabric or perforated or non-perforated, can be used such as a porous plastic sheet. Nonwoven, whether the raw material fibers is what is not particularly limited. For example, olefin such as polyethylene or polypropylene, polyester, synthetic fibers polyamide such as rayon or regenerated fibers such as cupra, etc. and natural fibers such as cotton, mixed fibers of two or more is used, composite fibers the like may be exemplified. Furthermore, the nonwoven fabric may be one produced by any process. As the processing method, known methods, for example, spun lace method, spun bond method, thermal bond method, melt-blown method, needle punching method, air-through method, point bonding method, and the like. For example, flexibility, as long as obtaining the drapability, span lace method is bulky, as long as obtaining the softness, thermal bond method is a preferable processing method.
The topsheet 30 may be made of a single sheet, or may be a laminated sheet obtained by sticking two or more sheets. Similarly, the top sheet 30, with respect to the plane direction, be made of one sheet, it may be composed of two or more sheets.
The topsheet 30 of the illustrated example, although extends laterally than the side edges of the absorbent body 56 is not limited to this, it may extend to the side edge of the outer sheet 12, in also rising form having a gathering rising if extend to the root portion of the gather, such may not only extend to the width direction inner side than the side edges of the absorbent body, can be changed as appropriate.
(Intermediate sheet)
The excrement which has passed through the top sheet 30 is moved to the absorber, in order to prevent reversion, (also referred to as second sheet) intermediate sheet between the absorbent element 50 and topsheet 30 can be provided with 40. The intermediate sheet 40, excrement a well enhance the absorption performance of the absorbent body is shifted to a rapidly absorber to prevent reversal of the absorber exudates absorbed, the texture of the surface of the topsheet 30 it is intended to improve. Intermediate sheet 40 may be omitted.
The intermediate sheet 40 material is not particularly limited, it is possible to use the same material as the topsheet 30. Is preferably bonded intermediate sheet 40 to the topsheet 30, when using a heat embossing or ultrasonic welding to the junction of the intermediate sheet 40 material is preferably those having a comparable melting the top sheet 30. Further, it is preferred that the fineness of the fibers used in the intermediate sheet 40 is 5.0 ~ 7.0 dtex If considering that transmits the solids in the stool, it is more liquid remains in the top sheet 30. In contrast, when the fineness of the fibers used in the intermediate sheet 40 is a 1.0 ~ 2.0 dtex, the liquid remaining topsheet 30 is hard to occur, the solids content of feces is hardly transmitted. Thus, the fibers of the nonwoven fabric used for the intermediate sheet 40 is preferably a fineness of 2.0 ~ 5.0 dtex or so. The intermediate sheet 40 can be a such as a mesh film having a large number of pores in the film material such as polyethylene.
Intermediate sheet of the form shown 40 has been arranged in the center shorter than the width of the absorbent element 50 may be provided over the entire width. Longitudinal length of the intermediate sheet 40 may be identical to the entire length of the diaper, may be the same as the length of the absorbent element 50 may be a short length range around the region for receiving the liquid.
(Absorption element)
Absorbing element 50 is a portion for absorbing and retaining liquid such as urine or loose stool, and the absorbent body 56 in the illustrated example, has to have a wrapping sheet 58 wrapping the whole of the absorbent body 56. Etc. If the absorbent body 56 is excellent in shape retention property, the packaging sheet 58 as required it can be omitted, in which case the absorbent element 50 is composed of only the absorbent body 56. Absorbent element 50 may be adhered to the inner surface of the liquid impervious sheet 11 via an adhesive of the hot-melt adhesive or the like at its back surface.
(Absorber)
Absorbent body 56 can be formed by a fiber assembly. As the fiber aggregate, another or separated from one another fiber stacking short fibers such as cotton-like pulp or synthetic fibers, filament aggregate obtained by spreading optionally tow (fiber bundle) of synthetic fibers such as cellulose acetate It can also be used. The basis weight of fibers, when fiber stacking flocculent pulp or short fibers, for example, be a 100 ~ 300g / m 2 or so, in the case of a filament aggregate, for example, be 30 ~ 120g / m 2 about can. Fineness in the case of synthetic fiber, for example, 1 ~ 16 dtex, preferably 1 ~ 10 dtex, more preferably 1 ~ 5 dtex. For the filament assemblies, the filaments may be non-crimped fibers but preferably crimped fibers. Wound degree of crimping of the crimped fibers, for example, 5 to 75 per 2.54 cm, preferably from 10 to 50, still more preferably from 15 to 50 nm. Further, it is possible to use a uniformly crimped fibers. During the absorbent body 56 it is preferable to disperse hold the superabsorbent polymer particles.
Other absorbent body 56 to a rectangular shape as in the illustrated example, the front-rear direction intermediate, when hourglass shape having a narrow constricted portion than its front and rear side, is improved, which is preferable fitness to the surrounding legs.
Although the dimensions of the absorbent body 56 can be decided as appropriate as far over the front and rear left and right urination position, in the longitudinal direction LD and the width direction WD, preferably extends to the vicinity of the periphery of the body 10. Reference numeral 56X denotes the full width of the absorbent body 56, reference numeral 10X denotes an entire width of the main body 10, reference numeral 10L denotes the overall length (equal to the total length of the diaper in the illustrated embodiment) of the main body 10.
(High-absorbent polymer particles)
The absorbent body 56 may contain superabsorbent polymer particles in part or all. The high-absorbent polymer particles, including "powder" in addition to "particles". The high-absorbent polymer particles 54, those used in the absorbent articles of this kind can be used as it is. The particle size of the superabsorbent polymer particles is not particularly limited, for example, 500μm standard sieve (JIS Z8801-1: 2006) (shaking 5 minutes) was screened using, and the particles falling down sieve in this screening 180μm standard sieve (JIS Z8801-1: 2006) when subjected to sieving (5 min shaking) was used at a rate of particles remaining on the sieve 500μm standard is 30 wt% or less, the standard of 180μm sieve the percentage of particles remaining on the top is desirable not less than 60 wt%.
As the material of the superabsorbent polymer particles, may be used without particular limitation, it is preferable that the water absorption amount is more than 40 g / g. The high-absorbent polymer particles may be based on starch and cellulose-based and synthetic polymer-based, starch - acrylic acid (salt) graft copolymer, starch - a saponified acrylonitrile copolymer, cross-linked sodium carboxymethylcellulose it can be used, such as goods or acrylic acid (salt) polymer. A shape of the high-absorbent polymer particles, although those conventional granular material like used is preferred, and may also be any other shape.
The high-absorbent polymer particles, less water absorption speed is 70 seconds, is preferably used particularly for the following 40 seconds. When the water absorption rate is too low, the liquid supplied into the absorbent body 56 is easily generated so-called back to become out back outside the absorbent body 56.
As the high-absorbent polymer particles, it is preferably used gel strength of more than 1000 Pa. Accordingly, even when a bulky absorbent body 56, prevents effectively a sticky feel after liquid absorption.
Basis weight of the superabsorbent polymer particles may be suitably determined according to the absorption amount required in applications of the absorbent body 56. Therefore not be generalized, but may be 50 ~ 350g / m 2. Basis weight of the polymer is less than 50 g / m 2, it becomes difficult to secure the absorption amount. Exceeds 350 g / m 2, the effect is saturated.
(Wrapping sheet)
When using the package sheet 58, as is the material, it can be used tissue paper, particularly crepe paper, non-woven, Porirami nonwoven, a sheet or the like small holes opened. However, it is preferably a sheet of the superabsorbent polymer particles do not exit. When using the non-woven fabric instead of crepe paper, hydrophilic SMS nonwoven fabric (SMS, SSMMS, etc.) are particularly preferred, the material is polypropylene, polyethylene / polypropylene composite can be used. Basis weight, 5 ~ 40g / m 2, is desirable especially in 10 ~ 30g / m 2.
Although Packaging of the package sheet 58 can be decided as appropriate cylinder in view of leakage prevention of the superabsorbent polymer particles from manufacturability and before the rear edge, so as to surround the front and rear surfaces and both side surfaces of the absorbent body 56 wrapped Jo, and the front and rear edges so protrude from the front and back of the absorbent body 56, winding the overlapped part and the hot melt adhesive to overlapping portions of the front and rear protruding portion in the form of joining by a joining means such as material deposition is preferred.
(Side gathers)
As shown in FIGS. 2, 3 and 7, in order to improve the fit of the leg portions located in the longitudinal direction LD middle side of the body 10, the sheet layers (Figure in longitudinal direction LD middle of the side flap portions SF in 示例 and between the outer sheet 12 and the liquid impervious sheet 11 of the folded portion 80 to be described later, between) the gather sheet 62 and the liquid impervious sheet 11, provided the side elastic member 70 extending in the longitudinal direction LD is and, by the expansion and contraction of the side elastic member 70, the portion having side elastic member 70 (i.e. the folded portion 80 to be described later in the illustrated example) is adapted to stretch in the longitudinal direction LD.
(Rising gather)
Intercept urine or loose stool moving the topsheet 30 on laterally, in order to prevent side leakage, on both sides in the width direction WD of the surface of the disposable diaper, rises skin side from the side of the topsheet 30 (projecting to) rising gathers 60 is provided over the entire longitudinal direction.
Rising gathers 60 of the illustrated example, the root portion 65 fixed in a region including the side flaps SF, fixed projecting portion 66 extending out from the base portion 65, in the longitudinal direction both end portions inclined state of the projecting portion and lodging portion 67 that is, non-a fixed rising portion 68, at least the tip portion of the rising portion 68, gather elastic fixed in a stretched state in the longitudinal direction positioned between lodging portions of the front and rear of the projecting part 66 and a member 63. Rising gathers 60 is formed by gathering the sheet 62 folded back at the tip, as the gather sheet 62 can be used a water-repellent nonwoven fabric and an elongated elastic member such as rubber thread as gather elastic member 63 it can be used. Gather elastic member 63, each of a plurality of, as shown in FIGS. 1 and 2, except that provided at intervals, it may be provided one each. Elongation portion having a gather elastic member 63 is not particularly limited, from 150 to 350% usually, and more preferably from 200 to 300%.
Root portion 65 of the rising gathers 60 in the illustrated example is provided only on the side flap portions SF, it has been joined to the side and the side of the outer sheet 12 of the liquid impervious sheet 11, side flaps SF it may extend to the sides of the area overlapping the absorbent body 56 from.
Protruding portions 66 of the rising gathers 60, although both end portions in the longitudinal direction LD is in the collapsed portion, during which the moiety is a rising portion 68 of the non-fixed, shrinkage the rising portion 68 of the gather elastic member 63 It comes to standing by the force. During mounting of the diaper, with the diaper is attached to the body in a boat, since the contractile force of the gathers elastic member 63 acts, resiliently close contact around the legs rise gathers 60 rising by contraction force of the gathers elastic member 63. As a result, so-called side leakage from around the leg is prevented.
(West stretch sheet)
Between both the fastening tape 13 a strip-shaped waist elastic sheet 90 over the left and right side flaps SF is provided, which is intended to back-side portion B is elastically stretchable in the width direction WD. Waist elastic sheet 90, together with both end portions in the width direction WD is in the non-stretchable regions 96, the portion between these non-stretchable regions 96, one that has a body expansion area 95 which expands and contracts in the width direction WD is there. Waist elastic sheet 90, the may be located only in the end flap portion EF, but are arranged so as spanning from the end flap portion EF to the rear end of the absorbent body 56 as in the illustrated example, the absorbent body 56 since the rear end of the can be pressed firmly to the body, preferable.
Waist elastic sheet 90 may be a sheet-like elastic member of a rubber sheet and the like, but it is preferable to use a nonwoven fabric from the viewpoint of air permeability. In this case, although it is also possible to use a sheet-like elastic member having air permeability such as stretchable nonwoven fabric, as shown in FIG. 6, bond the sheet layer 91, such as two sheets of nonwoven fabric with an adhesive such as a hot melt adhesive with matched, both sheets layer 91 perforated sheet between, reticular, is preferably used as fixed in an extended state along the elongated (thread or string-like shape) elastic member 92 in the width direction WD, such as . As a material of the sheet layer 91 in this case, it can be the same as the outer sheet 12. Elongation modulus of the elastic member 92 is preferably about 150-250%. In addition, when used as elongated as the elastic member 92 (thread-like or string-like shape), preferably provided about 5-15 present in the back-and-forth direction spacing of 3 ~ 10 mm ones thickness 420 ~ 1120dtex.
The dimensions of the main body expansion area 95 and non-stretchable regions 96 in the waist stretchable sheet 90 can be decided as appropriate, the width of the main body expansion area 95 70-100% of the width of the linkage portion 13A of the left and right of the fastening tape 13 to be described later it is preferable that the width of the non-stretchable region 96 is preferably set to 5 ~ 40 mm approximately for preventing me stop shrinkage during attachment to the main body 10. Non-stretchable regions 96 may be a region having no elastic member 92, as described in Patent Document 3, is attached to the elastic member 92 over the main stretch regions 95 and non-stretchable regions 96, the elastic member 92 in the non-stretchable region 96 the such as by cutting, may be little or not at all telescopic structure of those elastic members 92 in the non-stretchable region 96 remains.
Although it is possible that part of the elastic member 92 is arranged so as to cross the absorbent body 56, as shown in FIG. 6, etc. of the elastic member 92 cuts the part or the whole of the portion that overlaps the absorber 56 Accordingly, when a little or no inelastic structure that the elastic member 92 remains, since the rear end of the absorbent body 56 does not shrink in the width direction, fitting property is further improved.
Waist elastic sheet 90, in the illustrated embodiment, are disposed between the liquid impervious sheet 11 and outer sheet 12, but is not particularly limited to this arrangement. For example, it may be disposed between the waist elastic sheet 90 is liquid impervious sheet 11 and the absorbent element 50 may be provided on the outside of the outer sheet 12. Further, in case of forming the outer sheet 12 overlapping a plurality of sheet layers, the entire waist stretchable sheet 90 may be provided in the sheet layers of the outer sheet 12.
(Fastening tape)
Fastening tape 13 is intended to protrude from both sides of the waist portion of the back side portion B, a base end portion 13B which is attached to the waist portion of the back side portion B, laterally from the base end 13B non fixed fastener free portion 13F exiting extends, provided at the distal end of the fastener free portion 13F, and has a connecting portion 13A which is detachably coupled to the outer surface of the ventral side portion F.
The connecting portion 13A of the fastening tape 13, in addition to providing hook material of a mechanical fastener (Velcro) (the male part) may be provided an adhesive layer. Hook material are those having a number of engaging projections on the coupling surface, the shape of the engagement projection, (A) Le shape, (B) J-shape, (C) mushroom, (D) T-shaped, (E) is a double-J shaped (J-shaped a shape bound to back-to-back ones) or the like is present, may be in any form. Upon attachment of the diaper, in a state of overlapping side flaps SF of the back side portion B to the outside of the side flap portions SF of the ventral side portion F, connecting the connecting portion 13A of the fastening tape 13 in place of the ventral side portion F outer surface to.
The fastening tape 13, as shown in FIG. 6 (c) (d) and 12, having a tape stretchable region 13E where the portion between the at least base portion 13B connecting portion 13A expands and contracts in the width direction WD stretch not only the type (side panel type), as shown in FIG. 19, it is also possible to employ a non-stretchable type (tab type) having no tape stretchable region.
Elongation of the tape stretchable region 13E in the telescopic type of fastening tape 13 is not particularly limited, is preferably about 150 to 250%. Tape structure stretchable region 13E is not limited in particular, for example, as such as rubber sheet or stretchable non-woven fabric by using a sheet having elasticity in itself, it is also possible to form at least elastically extensible portion of the fastening tape 13 . Moreover, as also illustrated in FIG. 6 (c) (d) and 12, have a sheet layer 13S, such as two sheets of nonwoven fabric are bonded together by an adhesive such as a hot melt adhesive, between the two sheet layers 13S holes in the sheet, net, with those fixed in a stretched state along the width direction WD of the elastic member 13G, such as elongated (thread or string-like shape), forms at least a tape stretchable region 13E of the fastening tape 13 also suitable for. Thus those a plurality of elongated elastic members 13G mounted at intervals on the sheet layer 13S is not only easy to manufacture because it is universal in the art of disposable diapers, elongated elastic the thickness of the member 13G, number, elongation, by made different intervals, and the type of material, there is an advantage that can easily adjust the shrink properties of the fastening tape 13. As a material of the sheet layer 13S in this case, it can be the same as the outer sheet 12. In addition, when used as elongated as the elastic member 13G (thread or string-like shape), may be provided about 5-15 present in the back-and-forth direction spacing of 3 ~ 10 mm ones eg thickness 420 ~ 1120dtex.
Tape stretch region 13E as long as provided in the portion between the at least base portion 13B connecting portion 13A, (including i.e. proximal end 13B and the connecting portion 13A) over the entire width direction WD of the fastening tape 13 is provided may be, but when the proximal portion 13B and the connecting portion 13A are contracted, fear and the connection of the connecting portion 13A is insufficient, because the poor bonding of the base end portion 13B may occur, the base end portion 13B it is preferably provided in the range 70-100% of the width direction WD range between the coupling portion 13A and. In this case, the proximal portion 13B and the connecting portion 13A may be a region having no elastic member 13G, but is attached to the elastic member 13G across the width direction WD of the fastening tape 13, the elastic in the proximal end 13B and the connecting portion 13A such as by cutting the member 13G, it may be little or not at all telescopic structure of those remaining elastic members 13G in the proximal section 13B and the connecting portion 13A.
Connecting portion 13A of the telescopic type of fastening tape 13 can also be provided in the sheet layer 13S constituting the tape stretchable region 13E as shown in FIG. 6 (c) (d), fastening as in the example shown in FIG. 12 attaching a support piece 13C that protrudes from the distal end of the tape stretching region 13E to the tip portion of the tape 13, providing a connection portion 13A to the support piece 13C, preferably for ease of manufacture. Support piece 13C has a connecting portion 13A in the width direction WD intermediate, it is desirable that the tip is in the no knob connecting portion 13A. The shape of the support piece 13C may be appropriately determined, in the illustrated example has become shorter longitudinal direction LD length toward the tip, a connecting portion 13A to a length shortened portion of the longitudinal direction LD It is, but may be a rectangular shape. If the support piece 13C rectangular, is preferably shorter front-rear direction LD length than the sheet layer 13S constituting the tape stretchable region 13E. The material of the support piece 13C, nonwoven, plastic film, Porirami nonwoven, such as paper or their composite materials, in particular the known materials can be used without limitation, fineness 1.0 ~ 3.5 dtex, basis weight 20 ~ 100 g / m 2, the thickness less than 1mm spunbonded nonwoven, air-through nonwoven fabric, or spunlace nonwoven fabric is preferred.
Shape of the telescopic type of the fastening tape 13 may be appropriately determined, the front-rear direction as the tape stretchable region 13E is is preferred because rectangular is the ease of manufacture, such as in the illustrated embodiment, tape stretchable region 13E moves toward the distal end side It may be a length shorter becomes trapezoidal LD. The dimensions of the telescopic type of fastening tape 13 may be appropriately determined, it is preferred that the length of the longitudinal direction LD of the tape stretchable region 13E is about 20 ~ 100 mm, the length in the width direction WD of the tape stretching region. 13E it is preferably about 0 ~ 90mm.
Structure of non-stretchable type of fastening tape 13 is not limited in particular, it is possible to adopt a known one. Fastening tape 13 of non-stretchable type illustrated example, the support piece 13C protruding from the side edge of the main body 10, connecting portion provided in the width direction WD intermediate portion projecting from the side edge of the main body 10 in the support piece 13C those having a 13A. It can be used the same as those of the telescopic type as the material of the support piece 13C.
(Target sheet)
The connection points of the fastening tape 13 in the ventral portion F, preferably provided with a target sheet 12T having a target to facilitate coupling. Target sheet 12T, when connecting portion 13A is a hook material, can be used as the loop yarn, such as engagement projections tangling of the hook member is provided a large number on the surface of the sheet substrate made of a plastic film or nonwoven fabric, in the case of adhesive layer can be used that has been subjected to release treatment on the surface of the sheet substrate surface as rich in tackiness made of smooth plastic film. Also, if the connecting portion of the fastening tape 13 in the ventral portion F is made of a nonwoven fabric, for example, the outer sheet 12 of the illustrated embodiment is a case made of non-woven fabric, when coupling portion 13A of the fastening tape 13 of the hook material, skip target sheet 12T, it may be linked entwined hook material to the nonwoven fabric of the outer sheet 12. In this case, may be provided target sheet 12T between the outer sheet 12 and the liquid impervious sheet 11.
(Folded portion)
Characteristically, the body 10 has a folded portion 80 of the side is fixed by folding back the center side including a portion having a non-stretchable region 96 waist stretchable sheet 90. Fastening tape 13, as the base end of the tape stretching region 13E is, body expansion area within the range of ± 5 mm from the side edge in the width direction WD A1 of 95, and more preferably located within a range A1 of ± 2 mm, the main body 10 It is attached to. This can reduce the width of the non-stretchable region 96 waist stretchable sheet 90 occupying the width of the main body 10 (inevitably be formed). Further, when the fastening tape 13 has a tape stretchable region 13E can be improved continuity of the stretchable region spanning the left and right of the fastening tape 13.
Proximal end 13B of the fastening tape 13 may be coupled to a position overlapping the main stretch region 95, may be disposed adjacent to the side edge of the main body expansion area 95. Joining the proximal end portion 13B and the main body 10 of the fastening tape 13, because it is preferable preferably formed elongated along the longitudinal direction LD so as in the illustrated example, also is strong, ultrasonic sealing or heat Although it is preferred to have been made by welding a seal or the like may also be made by a hot-melt adhesive. The folded portion 80 is provided on a part of the range of the width direction WD of the side-flap portions SF, the entire width direction WD of the side-flap portions SF, or the center side in the width direction WD than the side flaps SF it may extend up to.
Folded portion 80 may also include an end portion of the main body expansion area 95 may comprise only a portion of the non-stretchable region 96. In other words, it is preferable that the folded position is located at the boundary between the non-stretchable regions 96 and body stretching region 95, even though not shown located in the center side of the boundary, also outside the boundary, as in the illustrated example it may be located in. In the usual case, the folded position the main body expansion area 95 and the non-stretchable region 96 and border width direction WD to within the range A2 of ± 5 mm based on the a, it is preferable and more preferably located within a range A2 of ± 2 mm .
When forming the folded portion 80 by simply folding the side of the body 10, the point of hardening for the material number of stacked layers is increased, and conventionally sandwiched between materials, exposed fastening tape 13 was not possible to expose point to, such that the outer sheet 12 that emphasizes strength than the flexibility is skin side, there are considerations. Therefore, one preferred embodiment, as in the example shown in FIG. 4 and 8, the waist elastic sheet 90 extends body stretching region 95 over the left and right side flaps SF, side flaps SF is gather sheet 62 , liquid-impermeable sheet 11, a portion of waist elastic sheet 90, and the outer sheet 12 is laminated, folded portion 80 is formed in a side-flap portions SF, gather sheet 62, non waist stretchable sheet 90 at least a portion of the expansion region 96, and a portion of the outer sheet 12 is folded back on the front side, the rear surface of the minute with a folded portion 80 of the side flaps SF, and base end portion 13B of the fastening tape 13 is attached form is proposed.
When folded portion 80 is made such a structure, centralized base end portion 13B of the fastening tape 13, by being attached to the rear surface of minutes with a folded portion 80 of the side flaps SF, the force at the time of use not only a portion that the intensity of the (mounting portion of the fastening tape 13) is high to force peeling the folded portion 80 is also provided an advantage that not applied. Or by the proximal end portion 13B of the fastening tape 13 is not attached to the skin side, is not compromised soft skin-side surface.
Further, as shown in FIG. 9, the folded portion 80 is formed in a side-flap portions SF, at least in part, and a portion exterior sheet 12 is folded back on the front side of the non-stretchable region 96 waist stretchable sheet 90 There, the front side of the folded portion 80 is covered by the side portion of the gather sheet 62, between the folded portion 80 and the side of the gather sheet 62 in the side-flap portions SF, the base end portion 13B of the fastening tape 13 form is attached is also one of preferred embodiments. The intensity of this case, the base end portion 13B of the fastening tape 13, by being attached to the folded portion 80 of the side-flap portions SF, (attachment portion of the fastening tape 13 in the folded portion 80) portion a force in use is concentrated It becomes high. Or the base end portion 13B of the fastening tape 13 is not exposed, and the front side of the folded portion 80 is covered by the side portion of the gather sheet 62, by hard material of such outer sheet 12 is not exposed, feel is impaired that there is no.
Furthermore, as shown in FIG. 10, the folded portion 80 is formed in a side-flap portions SF, gather sheet 62, at least a portion of the non-stretchable region 96 waist stretchable sheet 90, and the outer sheet 12 is folded back to the backside a portion, the amount of the back surface having a folded portion 80 of the side flaps SF, it is also preferable for the base end portion 13B of the fastening tape 13 is attached. The intensity of this case, the base end portion 13B of the fastening tape 13, by being attached to the folded portion 80 of the side-flap portions SF, (attachment portion of the fastening tape 13 in the folded portion 80) portion a force in use is concentrated It becomes high. Further, the front side of the folded portion 80 is formed of a gather sheet 62, and by the base end portion 13B of the fastening tape 13 is not attached to the skin side, is not compromised soft skin-side surface.
On the other hand, the folded portion 80, the thickness is increased, and is easily become hard, all sheets constituting the folded portion 80, but may extend to the tip of the folded portion 80 (the width direction WD center side edge), Instead, a portion of the sheet it is preferable that extends only to an intermediate width direction WD of the folded portion 80. For example, in the illustrated example, the outer sheet 12 is extended to the tip of the folded portion 80, because the waist elastic sheet 90 is not extended only up to the middle of the folded portion 80, hardly impair the flexibility of the folded portion 80.
Also, from this point of view, as in the illustrated example, it is preferable that a structure that does not include a folded portion 80 is particularly hard prone liquid impervious sheet 11. Furthermore, from the same viewpoint, the folded portion 80, to the sheet adjacent to the back side of the folded portion 80 of the body 10, also preferably are bonded with a hot melt adhesive which is arranged in intermittent patterns (not shown).
In the above example, it is turned back in the width direction WD of the side of the body 10 over the entire longitudinal direction LD, may form a folded portion 80 by folding only a part including a waist elastic sheet 90.
(Fastener folded-back portion)
Further, 11, 13, as in the example shown in FIGS. 15 to 18, the fastener free portion 13F of the fastening tape 13, the fastener folded folded back on the upper side of the folded portion 80 of the body 10 at the side edge of the main body 10 has a portion 81, the fastener folded portion 81, when the folded portion 80 at a portion overlapping the folded portion 80 are temporarily fixed preferred. Proximal end 13B of the fastening tape 13 may be provided on the side flap portions SF, also not shown may be provided to overlap with the absorbent body 56 as in the illustrated example.
Tacking fastener folded portion 81 against the folded portion 80 of the body 10, as in the example shown in FIG. 11, carried out by connecting the portion 80 folded connecting portions 13A of the fastener folded portion 81 in one preferred form is there. Also, as in the example shown in FIG. 13, without using the connecting portion 13A, the folded portion 80 and the fastener folded portion 81 and the overlap portion of some or all of the hot melt adhesive 82 (or by welding) It can also be temporarily fixed releasably. This approach, as in the illustrated example, the folded tip portion of the fastening tape 13, by the folded portion connecting portion 13A is suitable form for temporarily fixed to the fastening tape 13 itself.
Such a structure, in the production, in a state before forming the folded portion 80 of the body 10 as shown in FIG. 20 (a), the base end portion 13B of the fastening tape 13 to the site where the rear side of the main body 10 peeling with site is located, place the fastening tape 13 so as to extend to the site of the folded portion 80, the portion serving as the base end portion 13B is fixed to the main body 10, a portion serving as a portion 80 folded back fastening tape 13 capable after temporarily fixed in position FP folded along the side edges of the main body 10, folding back the both side portions and the fastening tape 13 of the body 10 as shown in FIG. 20 (b) as an integral, folded portion 80 and fastener folded portion 81 it can be prepared by to be formed. That is, when folded machining, the fastening tape 13 because it is integrated into the main body 10 at two positions of the base end portion 13B and a temporary fixing portion, as in the prior art less likely the inappropriate folding of the fastening tape 13. As a result, according to this embodiment, it is possible to effectively prevent displacement of the folded portion of the fastening tape 13. Incidentally, the fastener folded portion 81 of fastening tape 13, since only been temporarily fixed to the folded portion 80 of the body 10, In use, the fastener folded portion 81 as shown in FIG. 20 (c) laterally by so as to deploy peel the temporary bonding, the portion having a connecting portion 13A of the fastening tape 13, a state projecting from a side edge of the folded portion 80 of the body 10, except with a folded portion 80 to the body 10, it can be used without change as the conventional.
Example folded portion 80 of the illustrated in Figure 1, by folding the entire longitudinal direction LD of the most back side of the sheet body 10, but are formed over the longitudinal direction LD entire body 10, shown in FIGS. 15 to 18 as an example of the folded portion 80, by folding back only a portion of the longitudinal direction LD of the most back side of the sheet body 10 is provided only on a part of the region containing the site of fastener folded portion 81 of the fastening tape 13 is positioned it may be. Incidentally, the latter embodiment may be formed locally folded portion 80 from the beginning but, as in the example shown in FIGS. 15 to 18, the folded portion 80 over the longitudinal direction LD of the main body 10 during assembly of the body 10 after forming the, in order to form the wing portion to the main body 10, by excising the longitudinal direction LD middle portion of the side of the body 10, as a result, the folded portion 80 a part of the longitudinal direction LD of the main body 10 it may be formed only on.
When using the coupling portion 13A of the fastener folded portion 81 in the temporarily fixed, as in the example shown in FIG. 11 (a), may be temporarily fixed to the part 80 folded in its entirety, but in FIG. 11 (b) as in the example shown, connecting unit 13A, the temporary fixing portion 13x which is temporarily fixed to the folded portion 80, positioned from the width direction WD center side edge of the folded portion 80 in the width direction WD center side, the folded portion 80 What a protruding portion 13p and which are not temporarily fixed it is preferred. Thus, when forming part of the folded portion 80 the width direction WD portion protruding by positioning the center side of the connecting portion 13A, when deploying fastener folded portion 81, connecting portion 13A is easily peeled off. To the temporary fixing of the fastener folded portion 81 with sufficient, we are preferable entire width of the temporary fixing portion 13x is 50% or more of the total width of the connecting portion 13A.
When using the connecting portion 13A to the tacking, the width of the folded portion 80 may be wider than the width direction WD distance between the connecting portion 13A of the main body 10 side edge and the fastening tape 13. For example, the width of the folded portion 80 is, in the width direction WD distance between the connecting portion 13A of the main body 10 side edge and the fastening tape 13 and has a connecting portion 13A width direction WD dimension was added was greater than or equal to the length of the connecting it can be temporarily fixed to the part 80 folded across the width direction WD of the parts 13A. The width of the folded portion 80, the main body 10 in the width direction WD distance between the connecting portion 13A of the side edge and the fastening tape 13 and has a length obtained by adding the short dimension than the width direction WD dimension of the connecting portion 13A, some of the connecting portion 13A is the protruding than the folded portion 80.
Further, as shown in FIG. 14 (a), by narrowing the width of the gather sheet 62, not extended only to the end portion in the width direction center side of the folded part 80 (portion folded back end of the base end side of the gather sheet 62 and is allowed) positioned at the end in the width direction WD center of 80, it overlaps the folded portion 80 and gather sheet 62 of the exterior sheet 12 can be reduced an area where the thickness is increased, suppressing the reduction in breathability and flexibility the preferred because it can. In the form having a side gathers, when one of the sheets sandwiching the side elastic member 70 is in the gather sheet 62, since it is difficult to narrow the width of the gather sheet 62, as in the illustrated example, the liquid impervious sheet 11 and the outer sheet it is preferable to provide the side elastic member 70 between the portion located on the back side of the main body 10 in 12.
Also, as in the example shown in FIG. 14 (b), which is one of the preferred forms are also what is joined extend to the part 68 rising in the gather 60 folded portion 80 rising, and the rising gathers 60. The folded portion 80, rising when coating the outside of the rising portion 68 of the gathers 60 can be stacked number of rising gathers 60 material is increased, thereby improving the liquid-impermeable rising gathers 60. In particular, as in the illustrated example, it is preferable if no built-in water-impervious film to rising gathers 60.
(In outer sheet 12 illustrated example) all sheets or part of the sheet forming the folded portion 80, a perforated nonwoven hole penetrating the front and back are provided a number at intervals, holes at least in the folded portion 80 the has a number, preferably possible to suppress a decrease in the flexibility and breathability. The pore size, shape, arrangement is not particularly limited, usually, it is preferred that the area of each hole is 0.2 ~ 2.5 mm 2 (especially 0.5 ~ 1.5 mm 2) about the area rate is preferably about 1.0 to 15.0% (especially 5.0 to 10.0%).
<Description of the language in the specification>
The following terms in the specification, unless otherwise indicated in the specification is intended to have the following meanings.
From - the "unfolded state" of the natural length state, it refers to the shrinkage or slack without completely completely state that flat stretch unfolded.
- "elongation" refers to the value at the time of the natural length of 100%.
- "gel strength" is intended to be measured in the following manner. Artificial urine 49.0 g, the superabsorbent polymer was added 1.0 g, is stirred with a stirrer. The resulting gel returned to room temperature after standing 3 hours 40 ℃ × 60% RH constant temperature and humidity tank, curdmeter (I.techno Engineering Co.: Curdmeter-MAX ME-500) to measure gel strength.
· "Artificial urine" is urea: 2 wt%, sodium chloride: 0.8 wt%, calcium chloride dihydrate: 0.03 wt%, magnesium sulfate heptahydrate: 0.08 wt%, and ion-exchanged water: 97 is obtained by mixing .09Wt%, unless otherwise stated, it is used at a temperature of 37 degrees.
- "mass per unit area" is intended to be measured in the following manner. After the sample or specimen was pre-dried, standard state (test location, temperature 23 ± 1 ° C., relative humidity of 50 ± 2%) was left in the test chamber or device, to the condition that a constant weight. Predrying, it refers to constant weight at a temperature 100 ° C. of environmental sample or specimen. Incidentally, the official moisture regain is about 0.0% of the fibers may not be performed predrying. From specimen condition that a constant weight, using templates for sampling the (100 mm × 100 mm), cut a sample of dimensions 100 mm × 100 mm. The weight of the sample was measured 10 times and by calculating the weight per square meter, a basis weight.
· "Water amount", JIS K7223-1996 to measure the "water absorption test of superabsorbent resin".
· "Water absorption rate" using a physiological saline superabsorbent polymer and 50g of 2g, "time to end point" when performing "absorption rate test method superabsorbent resin" JIS K7224-1996 to.
If no-stated on environmental conditions in the test and measurement, the test and measurement standard conditions (test location, temperature 23 ± 1 ° C., relative humidity of 50 ± 2%) to that performed in the test chamber or device to.
- the size of each part, unless otherwise stated, means a dimension in the unfolded state, not the natural length state.
The present invention is available to a tape type disposable diaper, such as the above example.
10 ... main body, 11 ... liquid-impermeable sheet, 12 ... outer sheet, 12T ... target sheet, 13 ... fastening tape, 13A ... coupling portion, 13B ... proximal end, 13E ... tape stretching region, 13F ... fastener free portion, 30 ... top sheet, 40 ... intermediate sheet, 50 ... absorbent element, 56 ... absorbent body, 58 ... wrapping sheet, 60 ... rising gather, 62 ... gather sheet 63 ... gather elastic member, 70 ... side elastic member, B ... back side portions, F ... ventral portion, EF ... end flap portion, SF ... side flaps, LD ... front-rear direction, WD ... widthwise, 80 ... folded portion, 81 ... fastener folded portion, 90 ... waist elastic sheet, 96 ... non-stretchable region, 95 ... body stretching area.
Tape type disposable diaper of claim 1, wherein.
Tape type disposable diaper of claim 2 wherein.
Tape type disposable diaper according to any one of claims 3-5.
Tape type disposable diaper according to any one of claims 1 to 6.
Tape type disposable diaper of claim 7 wherein.
Tape type disposable diaper according to claim 7 or 8, wherein.
Tape type disposable diaper according to any one of claims 7-10.
A method of manufacturing a tape type disposable diaper according to claim 7,
PCT/JP2018/008471 2017-03-28 2018-03-06 Tape-type disposable diaper and method for manufacturing tape-type disposable diaper WO2018180264A1 (en)
JP2017-063581 2017-03-28
JP2017063581A JP6456999B2 (en) 2017-03-28 2017-03-28 Tape type disposable diapers
JP2017067003A JP6457004B2 (en) 2017-03-30 2017-03-30 Tape type disposable diaper and a method of manufacturing the same
JP2017-067003 2017-03-30
WO2018180264A1 true WO2018180264A1 (en) 2018-10-04
ID=63675392
PCT/JP2018/008471 WO2018180264A1 (en) 2017-03-28 2018-03-06 Tape-type disposable diaper and method for manufacturing tape-type disposable diaper
CN (1) CN108652833A (en)
TW (1) TW201836567A (en)
WO (1) WO2018180264A1 (en)
JP2001095838A (en) * 1999-09-29 2001-04-10 Daio Paper Corp Disposable diaper
JP2001346827A (en) * 2000-06-09 2001-12-18 Daio Paper Corp Disposable paper diaper
JP2004298499A (en) * 2003-03-31 2004-10-28 Daio Paper Corp Securing type disposable diaper
JP2010017341A (en) * 2008-07-10 2010-01-28 Oji Nepia Co Ltd Disposable diaper
US20110208149A1 (en) * 2008-10-16 2011-08-25 Sca Hygiene Products Ab Absorbent article with elastic side panels
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WO2017006677A1 (en) * 2015-07-06 2017-01-12 ユニ・チャーム株式会社 Absorptive article and method for manufacturing absorptive article
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2018-11-14 121 Ep: the epo has been informed by wipo that ep was designated in this application
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