Patent Publication Number: US-2022235539-A1

Title: Substance dispenser, use thereof, and method for manufacturing

Description:
The invention relates to a substance dispenser for temporarily placement on a flush bowl. 
     Such substance dispenser are often used in the flush bowl of a flush toilet, and may alternatively be used in the flush bowl of a urinal, for instance to dispense a cleaning agent, disinfectant, air freshener, and/or a descaling agent when the water flows through the flush bowl, for instance upon flushing the toilet. 
     A known substance dispenser comprises a plastic holder with a hard tablet-shaped substance held therein, and it further comprises a deformable plastic bracket that can be clamped over a rim of a flush bowl of a flush toilet. The plastic holder and bracket of the substance dispenser are normally manufactured by means of injection molding and are made from a sturdy, resilient plastic. Owing to the resilient plastic the bracket can be bent outward when being arranged on the upper edge or rim of the flush bowl, after which it clamps fixedly to the upper edge. 
     A drawback of such known substance dispenser is that they are designed for an average shape of a flush bowl, wherein use is made of a certain shape of the outer side of the flush bowl and a certain shape of its upper edge as well as the inner side of the flush bowl. There are however numerous models of toilets with differently shaped flush bowls on the market, such that the bracket of the substance dispenser will not fit properly onto each flush bowl. This may become evident for instance when the bracket has to be bent too far outward to fit over the edge, when the bracket continually comes loose from the upper edge, or for instance when the holder with the substance tablet does not hang in the flow path of the flushing water. 
     Another drawback is that such known substance dispenser include large amounts of plastic, which, at least when the known substance dispenser is designed as a disposable, which is intended to be used for for instance about four weeks, may have a serious impact on the environment. 
     Further, for instance to counteract that the substance dries out, to counteract that fragrance to be released in the flush bowl may evaporate prematurely, and/or to counteract that perfumes or smells can contaminate other provisions stored in the same place as said dispenser, the substance dispenser is usually sold in a state in which each substance dispenser is stored in a sealed plastic bag, which may be formed as a flow pack foil, which causes that even more plastic is used. 
     It is an object of the invention to provide an alternative substance dispenser. In particular, it can be an object of the invention to provide a substance dispenser, wherein at least one of the disadvantages of a prior art substance dispenser is counteracted. More in particular, the invention may aim to provide a substance dispenser wherein at least one of the disadvantages mentioned above is counteracted. In embodiments, the invention aims at providing a substance dispenser, in particular a disposable substance dispenser, which may counteract the use of plastic material. Additionally or alternatively, it can be an aim of the invention may to facilitate that a substance dispenser may be applied to a toilet in a relatively easy manner, and/or that it may be removed relatively conveniently. Additionally or alternatively, it can be an aim of the invention to facilitate that a substance dispenser can be manufactured in a relatively simple manner. 
     Thereto, the invention provides for a substance dispenser according to the features of claim  1 . 
     By providing the substance dispenser with a flexible connecting part including a layer of film material defining a first surface, in particular a rear surface, which is provided with a first adhesive for temporary connecting said connecting part to a rim of the flush bowl, it can be attached relatively easily, especially substantially independently of the exact shape or dimension of the flush bowl, in particular as the flexible connecting part, which may be considered to be limp, can form a connecting part which does have a certain tensile strength but a negligible bending strength, such that it can be draped over the edge of a flush bowl relatively conveniently, in particular as the weight of the substance holder and/or the substance held therein may pull it substantially tight. 
     As the first adhesive may be a relatively easily removable pressure sensitive adhesive, the substance dispenser may also be repositioned, for instance if it accidently is applied at a position where the water does not flow over it well enough when the toilet is flushed. Further, the adhesive may be such that it does not leave any marks on enamel of the flush bowl. 
     By arranging the substance dispenser such that it can be brought from a storage state into the use state, wherein, in said storage state of the substance dispenser, a cover substantially covers one or more portions of a surface which are at least partly open in the use state, it can be facilitated that the substance held in the substance holder may be closed off from the surroundings, in particular when said cover is removably attached, especially adhered, to the substance holder and/or to the substance held in said substance holder, preferably in a substantially airtight manner. This may omit the need of packaging the substance dispenser in an additional plastic bag, which may be formed as a flow pack foil or the like, as a result of which the substance dispenser can be relatively environmental friendly. 
     By forming the cover at least partly by a release liner onto which, in the storage state of the substance dispenser, at least the flexible connecting part is at least partly carried, an even more environmental friendly design may be facilitated as no separate cover is needed then. This may also ease the manufacturing process and/or may reduce costs. 
     The invention also relates to a flush bowl, in particular a flush bowl of a flush toilet, provided with a substance dispenser. 
     Further, the invention relates to a method for manufacturing a substance dispenser. 
     Advantageous embodiments according to the invention are described in the appended claims. 
    
    
     
       By way of non-limiting examples only, embodiments of the present invention will now be described with reference to the accompanying figures in which: 
         FIG. 1  shows a schematic cross-sectional view of a partly cut-away flush bowl provided with an embodiment of a substance dispenser according to an aspect of the invention; 
         FIG. 2  shows a schematic cross-sectional view of the substance dispenser of  FIG. 1  in a storage state thereof; 
         FIG. 3  shows a schematic top view of the substance dispenser of  FIGS. 1 and 3 ; and 
         FIGS. 4-6  show three embodiments of a substance holder for a substance dispenser according to aspects of the present invention. 
     
    
    
     It is noted that the figures schematically show merely preferred embodiments according to the invention. In the figures, the same or similar reference signs or numbers refer to equal or corresponding parts. 
       FIG. 1  shows a schematic cross-sectional view of a partly cut-away flush bowl  100  provided an embodiment of a substance dispenser  1  in a use state thereof in which it is temporarily attached to a flush bowl  100 , in particular by adhering it to rim  101  of said flush bowl  100 . The flush bowl  100 , or so-called flush basin or pan  100 , can be the flush bowl of a flush toilet  100 , for instance a flush toilet  100  designed for sitting and or a flush toilet for squatting, i.e. a so-called squat toilet. 
     It is noted that the substance dispenser  1  is arranged and/or intended for temporarily placement on the flush bowl  100 . The substance dispenser  1  comprises a flexible connecting part  21  including a layer of film material  20 . Preferably said flexible connecting part  21  is substantially formed from said film material, especially relatively thin film material, preferably plastic film material. The flexible connecting part  21  defines a first surface  20   a  which is provided with a first adhesive  31  for temporary connecting said connecting part to a rim  101  of the flush bowl  100 . In particular, the first adhesive  31  may be arranged such as to allow the flexible connecting part  21  to be removed from the flush bowl  100  in a manner substantially not leaving behind adhesive on said bowl. 
     Advantageously, said first surface  20   a  is formed by a rear surface  20   a  of the layer of film material  20 . 
     Said first adhesive  31  can preferably be a pressure sensitive adhesive  31 , such as for instance is known from removably attachable stickers. It is appreciated that the first adhesive  31  can preferably be a removable adhesive, which can be easily removed from the flush bowl  100 , in particular when said flush bowl is made from porcelain, e.g. enameled or glazed porcelain, or another ceramic material, and/or metal, e.g. stainless steel, and/or plastic material. The adhesive  31  may thus provide for a non-permanent sticking zone for suspending the substance dispenser  1  on, at or in a toilet. 
     As the flexible connecting part  21  is sticky, like a sticker, it may, in a storage state of the substance dispenser  1 , be substantially carried on a release liner  80 , as for instance is the case in  FIG. 2 . The release liner  80  may for instance be a paper or plastic-based film sheet which may be coated with a release agent, which may provide a release effect against the first adhesive  31 . 
     The substance dispenser  1  further comprises a handle part  22  connected to the connecting part  21  at or near a first end region  21   a  of said connecting part  21 . The handle part  22  is arranged and/or intended for handling the substance dispenser  1  during placement on the flush bowl  100  and for handling the substance dispenser  1  during its removal from the flush bowl  100 . 
     Advantageously, the layer of film material  20  defining the connecting part  21  may also define said handle part  22 . In particular, the connecting part  21  and the handle part  22  may be formed from the same sheet of film material. 
     Additionally or alternatively, the handle part  22  can preferably be substantially kept free of adhesive, or, in case it is provided with adhesive, for instance when the first adhesive  31  would extend from the connecting part  21  over handle part  22 , the adhesive may be covered, for example by a piece of sheet material attached to the adhesive provided. In the here shown embodiment, at least a portion of the handle part  22  is kept free of said first adhesive  31 , as for instance can be seen relatively well in  FIG. 2 , thereby providing a non-sticking peel-off zone  22   a , preferably located at a distal end of the substance dispenser  1 , for allowing the handle part  22  to be grabbed in a relatively convenient manner and/or to be peeled off from the release liner  80 , as is indicated by arrow A 21  in  FIG. 3 . 
     Although the handle part  22  and the connecting part  21  can preferably be integrally formed, in particular from a single sheet of film material, the handle part  22  may in alternative embodiments be formed separately and may then be attached to the connecting part  21 . 
     Further, the substance dispenser  1  comprises a substance holder  50  holding a substance  60 . Said substance may for example comprise a cleaning agent and/or a disinfectant, such as an antimicrobial agent. Additionally or alternatively, the substance  60  may for example comprise an air freshener or so-called deodorizer which may be arranged to emit a fragrance or so-called odorant or aroma compound. Additionally or alternatively, the substance  60  may comprise a descaling agent, which may be arranged and/or intended for counteracting and/or removing limescale, and which for instance may comprise one or more acidic compounds. 
     The substance holder  50  is connected to the connecting part  21  at or near a second end region  21   b  of said connecting part  21 . Thereto, the layer of film material  20  included in the flexible connecting part  21  may for instance also define an attachment zone  23  which is attached to the substance holder  50 . 
     In embodiments, the substance dispenser  1  may be arranged such that a user can visually inspect whether there is still substance  60  available in the substance holder  50  when provided in the flush bowl  100  during use. Thereto, the attachment zone  23  may be at least transparent, especially such as to form one or multiple windows  26 . Alternatively, or additionally, one or multiple windows  26  may be formed as openings, which in particular may be cut-out of the film material  20  defining the attachment zone  23 . Additionally or alternatively, the substance holder  50  may be transparent at least partly, in particular it may be at least partly transparent at a bottom side  51   a  of the substance holder  50 , for instance by making its bottom  51  at least partly transparent. 
     Preferably, the attachment zone  23  defined by the layer of film material  20  can be provided with a second adhesive  32 , preferably a waterproof adhesive, for attaching said attachment zone  23  to the substance holder  50 , in particular in a substantially permanent manner. Contrary to the first adhesive  31  which may be arranged for removable applications, the second adhesive  32  may thus be arranged for permanent applications. 
     As is the case in the exemplary embodiments shown in the Figures, see in particular  FIG. 1 , the second adhesive  32  can preferably be provided at the first surface  20   a  of the layer of film material  20 . This may be advantageous, for instance as the attachment zone  23  and the connecting part  21  can then be formed relatively easily from a single sheet of film material, which for instance until the moment the attachment zone  23  is to be adhered to the substance holder  50 , may be provided on a release liner  80  which carries both the attachment zone  23  and the connecting part  21 . It will be appreciated that portion of the release liner  80  carrying the attachment zone  23  up to that moment may be removed afterwards, and that therefore the release liner  80  may be divided in two or more parts, e.g. by means of cutting. 
     Advantageously, a first surface  50   a  of the substance holder  50 , which for instance may be formed by the bottom  51  of said holder  50  and which during use of said holder  50  may for instance form a front face  50   a , as can be seen in  FIG. 1 , may be substantially closed off, in particular closed off substantially hermetical or air-tight. 
     For example, the substance holder  50  itself, in particular a bottom portion  51  thereof, may close off the substance holder  50  at said first surface  50   a . Alternatively or additionally, the layer of film material  20 , in particular an attachment zone  23  formed by said layer  20 , may close off said first surface  50   a  of the substance holder  50 . Additionally or alternatively, the layer of film material  20  can cover at least 80%, especially at least 90%, of said first surface  50   a  of the substance holder  50 , and preferably said layer of film material  20  may cover said first surface  50   a  of the substance holder  50  substantially completely. 
     It will be appreciated that, at least in a use state of the substance dispenser  1 , the holder  50  may allow water to flush away at least a portion of the substance  60 . Thereto, at least in a use state of the substance dispenser  1 , one or more portions of a second surface  50   b  of the substance holder  50 , in particular a face side  50   b  located substantially opposite to the first surface  50   a  of the holder  50 , such as for example a rear face  50   b , can be at least partly open such as to allow flushing water to contact the substance  60  held by the substance holder  50 . 
     Advantageously, the substance dispenser  1  may be provided with a cover  70  which, in a storage state of the dispenser  1 , may substantially cover said one or more portions of the second surface  50   b  which are at least partly open in the use state, and preferably wherein said cover  70  then may substantially cover said entire second surface  50   b  of the substance holder  50  in the storage state of the substance dispenser  1 . 
     Then, for instance especially when the substance holder  50  and the substance  60  held therein together form a relatively flat structure  90 , the substance may be enclosed relatively well in such storage state of the dispenser  1 . It is noted that, in particular, such relatively flat structure  90  may have a height  1190  and a width W 90  which exceed its largest thickness T 90 , more in particular said thickness T 90  being at most ½ of the height  1190  and/or the width W 90 , yet more in particular at most ⅓ of the height  1190  and/or the width W 90 , or even smaller. 
     Enclosing the substance  60 , partially or completely, may have different advantages. For example, it may counteract that the substance  60  dries out. 
     It will be appreciated that the substance  60  provided in the holder  50  may preferably be enclosed substantially entirely, in particular in a substantially air-tight manner. Thereto, the holder  50 , which may be formed as a cup or tray or alternatively shaped container  50  or so-called reservoir  50 , may be arranged to close off the substance at its remaining sides, which are not yet covered by the cover  70  and/or the attachment zone  23  and/or portions  51  of the substance holder  50  located at said first surface  50   a . For instance thereto, the substance holder  50  may comprise one or more sidewalls  52 . 
     Preferably, the substance dispenser  1  may be of such a design that the cover  70  and the substance holder  50  together enclose the substance  60  in the storage state of said dispenser  1 . 
     It is noted that the cover  70  can be removably attached, especially adhered, preferably by means of third adhesive  33 , to the substance holder  50 , in particular to the second surface  50   b  of the substance holder  50 , preferably in a substantially airtight manner and preferably in a releasable manner. Additionally or alternatively, the cover may be attached, preferably adhered, to the substance  60  held in said substance holder  50 , preferably in a substantially airtight manner and preferably in a releasable manner. Like the first adhesive  31 , said third adhesive  33  may be arranged for removable applications, and may, alternatively or additionally may be a pressure sensitive adhesive  33 . 
     Advantageously, the cover  70  can be formed at least partly, and preferably entirely, by a release liner  80  onto which, in the storage state of the substance dispenser  1 , at least the flexible connecting part  21  is at least partly carried. In this manner, a relatively simple, in particular relatively economical, construction can be formed. For example, the substance dispenser  1  may be substantially formed out of for instance only four parts, i.e. the film material  20 , the substance holder  50 , the substance  60 , and the release liner  80  for supporting one or more sticky portions of said film material. 
     In embodiments, the release liner  80  may extend beyond the connecting part  21  and beyond the handle part  22 , such as can be understood from  FIG. 3 . In the there shown embodiment, in the storage state of the dispenser  1 , the release liner  80  extends also below an excess portion  25  of the film material  20  cut loose from the connecting part  21  and the handle part  22 . For example, the release liner  80  may then be broad enough to cover the second surface  50   b  of the substance holder  50 , as it may then for example be wider than the connecting part  21 . The excess portion  25  of film material may be printed, and may for instance comprise information, which may include instructions and/or warnings or the like. Additionally or alternatively, other parts of the substance dispenser, in particular parts formed by the film material  20  may be provided with prints or the like, for instance in order to provide for an aesthetically appealing appearance. Additionally or alternatively, the layer of film material  20 , in particular a printed second surface  20   b  of the said layer located opposite to its first surface  20   a , may be covered at least partly by a finish or varnish layer or other cover layer, such as a silicon-containing finish layer, which may protect the printing, for instance against uric acid and/or cleaning agents, such as cleaning agents from the substance  60  and/or other cleaning agents used by a user to clean the flush bowl  100 . 
     It will be appreciated that the release liner  80  can define a first surface  80   a  onto which the at least part of the flexible connecting part  21  is carried. In particular, a portion of the first surface  20   a  of the layer of film material  20  defining said flexible connecting part  21  may be carried on said first surface  80   a  of the release liner  80 , and the substance holder and/or the substance held therein can then thus be removably adhered to a second surface  80   b  of said release liner  80  opposite to its first surface  80   a.    
     Further, the layer of film material  20  may further define an intermediate part  24 . Said intermediate part  24  can interconnect the attachment zone  23  and the flexible connecting part  21 , which, in the storage state of the substance dispenser  1 , can be bent, in particular such as to allow that the attachment zone  23  can, in said storage state, extend substantially offset from an/or substantially parallel with the connecting part  21 , preferably in a manner in which said attachment zone  23  and said connecting part  21  overlap at least partly, as can be seen in  FIG. 2 . This may facilitate that the substance dispenser  1  can be stored relatively compactly, in particular in a relatively small container, such as cardboard-based box. 
     In embodiments, one or more parts of the substance dispenser  1  may be at least partly be provided with a coating. Said coating may for example be a water repellent and/or dirt repellent coating, and may for example comprise silicone coating material and/or other suitable materials. 
     Advantageously, at least one or more parts or portions of the substance dispenser  1 , in particular parts or portions which during use of the substance dispenser  1  may hang at least partly inside a flush bowl of a flush toilet  100 , may be provided with the coating, especially such as to counteract that said one or more parts or portions may be unintentionally soiled with feces or other dirt. 
     In particular, one or more portions of one or more parts or zones of the layer of film material  20 , such as for example the flexible connecting part  21  and/or the intermediate part  24  and/or the attachment zone  23 , may at least partly be provided with the coating, in particular at the second surface  20   b  thereof, which preferably is a printed surface. Although not necessarily, substantially the entire second surface  20   b  of the layer of film material  20  may be coated, for example to ease the production of the substance dispenser  1 . 
     It is noted that the coating, which may form a substantially transparent coating layer and/or which may be used to cover and/or protect printing provided on the layer of film material  20 , may be a UV-curable coating, which for instance may facilitate that it can cure relatively speedily. 
     Although the coating may most advantageously be used on the layer of film material  20 , additionally or alternatively, the coating may be provided on the substance holder  50 , for example on its outwardly facing side of the substantially wall-shaped support element  54  and/or on the side of its second flange  55  facing away from the attachment zone  23  of the layer of film material  20  and/or on the outwardly facing side of the first flange  53  of said substance holder  50 . 
     In advantageous embodiments, said coating may be provided with a fragrance compound or perfume compound or aroma compound, which may be for releasing a predetermined scent or perfume, in particular during use of the substance dispenser  1 , more in particular in a flush bowl of a flush toilet  100 . 
     It has been surprisingly found that such a scented coating may in an original and inventive manner increase the life time of the substance dispenser  1 , for instance with up to a few additional days, as the substance dispenser  1  may keep emitting odor to a certain desirable extent, even if most of, or even substantially all of the substance  60 , which preferably comprises an air freshener or deodorizer, initially held in the substance holder  50  may already have been washed away out of said substance holder  50 . Further, it will be appreciated that the coating and/or its fragrance compound or the like, if any, and/or any one or more of other parts or components of the substance dispenser  1 , for instance all of them, may preferably be substantially non-toxic. 
     In embodiments, the substance holder  50 , which holds the substance  60 , can include one or more chambers  59  for holding the substance  60 . In the embodiments of  FIGS. 1, 2, 4 and 5 , the holder  50  defines for instance one chamber  59 . However, in alternative embodiments, the holder may comprise multiple chambers. Said one or more chambers  59  may be at least defined by a bottom  51  and one or more sidewalls  52 . 
     A surface  51   a  of the bottom  51  facing away from the substance  60  held by said holder  50  can then be adhered to an attachment zone  23  defined by the layer of film material  20 . Additionally or alternatively, the sidewall of the holder  50  may comprise a first flange  53 , which may be provided at an upper end of the sidewall  52  and which may extend substantially sidewardly, in particular in a substantially outward direction, especially in a direction substantially transverse to an upward direction in which the side wall  52  extends. 
     In the storage state of the substance dispenser  1 , said first flange  53  can be releasably attached, for instance adhered, to a cover  70 , in particular a cover  70  formed by the release liner  80 , more in particular to the second surface  80   b  thereof, preferably in a substantially airtight manner. 
     It will be appreciated that the release liner  80 , or another cover  70 , may alternatively be adhered to a wall  52  not having such flange  53 , in particular in case said wall  52  is relatively thick and can as such itself define a relatively large top face  52   b.    
     As for instance is the case in the embodiment of  FIGS. 1 and 2 , the sidewall  52  of the substance holder  50  can comprise a support element  54 , in particular a substantially wall-shaped support element  54 , which may extend from the first flange  53  in a substantially downward direction. Additionally or alternatively, the holder  50  may comprise a second flange  55  which can be provided at a lower end of the sidewall  52 . In particular, said second flange  55 , of so-called bottom flange  55 , may be located at a lower end of the support element  54  of said side wall  52  and may extend substantially in a sideward direction, in particular in a substantially outward direction, especially substantially in line with the bottom  51  of the substance holder  50  or at a level below the bottom  51  of said holder  50 , in particular such that the attachment zone  23  of the layer of film material  20  could be applied to said second flange  55  relatively well and/or relatively neatly. 
     In advantageous embodiments, the substance holder  50 , which may be formed of a plastic, in particular a thermoplastic or so-called thermosoftening plastic, can be molded, preferably thermoformed. In particular, this may be done in a manner in which the surface  51   a  of the bottom  51  which during use of the dispenser  1  is facing away from the substance  60  held by the substance holder  50  is not in contact with a mold part. As a result, it can be counteracted that said surface  51   a , which can be formed by a so-called bottom side  51   a  of the bottom  51  of the holder  50 , is in contact with a mold surface provided with release agent during molding of said substance holder  50 . It can then thus be counteracted relatively easily that the bottom surface  51   a  of the substance holder  50  may be contaminated by such release agent. Therefore, it may be counteracted that the attachments zone  23  will accidently not be properly adhered to the holder  50 , and it may thus be counteracted that the holder  50  may accidently come loose from the layer of film material  20 , which could be problematic, for instance as it could cause a blockage in a drainage pipe connected to the flush bowl  100 . 
     In preferred embodiments, a surface  51   b  of the substance holder  50 , in particular a surface  51   b  of a bottom  51  of said substance holder  50  facing towards and/or in contact with the substance  60 , can be provided with a relief structure  56 . Said relief structure  50  may for instance be a substantially raster-shaped relief  56 , for instance defining a honeycomb structure such as shown in the embodiments of  FIGS. 5 and 6 . However, other relief shapes are also possible. It is noted that the relief may facilitate that the substance  60 , which may preferably be a pliable substance  60  and/or in the form of a paste  60  which may stick or adhere to the substance holder  50 , may stick or adhere relatively well to said holder  50 , thereby counteracting that a lump of substance  60  may come loose accidently as result of flush water. 
     It is noted that such pliable substance  60 , which does not form a tablet or block loosely provided in a holder, but which may more or less form a paste-like substance sticking to the walls  51 ,  52  of the holder  50 , may by poured into said holder as a warm emulsion, and which may stay viscous to some extent after it has cooled down. 
     In particular, said relief structure  56  may have a height less than the height of a sidewall  52  of the holder  50 . Additionally or alternatively, said relief structure  56  can have a height of at most 10 mm, preferably at most 5 mm, for instance at most 3 mm or at most 2 mm, such as a height of between 0.5 mm and 2 mm. The side wall  52 , which may also be relatively low, as the structure  90  formed by the substance holder  50  and the substance  60  held therein may preferably be relatively flat, may then for instance have a height of at most about 2 cm, preferably at most 1.5 cm, such as about 1 cm. 
     However, in alternative embodiments, the substance holder  50  can be substantially formed as a plate  57 , in particular as a disc  57 , such as for instance is the case in the exemplary embodiment shown in  FIG. 6 . The plate  57  may be provided with side wall  52 , but this is not necessary for every embodiment. 
     It is noted that the relief structure  56 , in particular in cases in which the substance holder  50  is formed as plate or disc  57 , may form multiple cells  58  in which substance  60  can be held. When the cells  58  are covered by a cover  70 , preferably formed by the release liner  80 , in particular it rear surface  80   b , the substance  60  can then be substantially closed off, for instance counteracting that it dries out, even if the entire substance dispenser  1  is not held in an airtight container, such as an airtight plastic bag, such as a flow pack foil, or other airtight envelope. However, the cover thus not necessarily needs to close off the cells  58  in the storage state of the substance dispenser  1 , and may for instance only cover a top side of the substance, for instance in case the substance  60  is also applied on the top side of the relief structure  56 , in stead of substantially only within said cells  58 . 
     In this context, it is noted that in case the substance  60  is not completely enclosed in the storage state of the substance dispenser  1 , the cover  70  may still be highly advantageous, as it, for instance together with a bottom  51  of the holder  50  and/or the attachment zone  23  of the layer of the film material  20  may screen off at least substantial portions of the substance  60  held by the substance holder  50 . 
     In embodiments, the substance holder  50  may for example include, and preferably may be substantially formed as, a mesh, a sponge and/or a textile, such as a woven textile or a non-woven textile. It will be appreciated that, at least in such embodiments, the substance holder  50  does thus not need to form a cup or other container, and may thus be free of sidewalls. A first surface, e.g. a bottom surface, of such mesh, sponge or textile structure may be covered by the attachment zone  23  defined by the layer of film material  20  adhered to said structure, whereas an opposite surface, e.g. a top surface, may be covered by a cover  70 , in particular a cover formed the release liner  80 . 
     In embodiments, the attachment zone  23  may laterally extend beyond the lateral side edges of such mesh, sponge or textile, such that said attachment zone  23 , as it can be formed from flexible film material and/or as the mesh, sponge or textile may be at least partly compressible, can be adhered to the bottom side  80   b  of the release liner  80 . In order to facilitate that the holder can be removed from the release liner  80  in order to place the dispenser  1  in the flush bowl  100 , the release liner  80  may be arranged such that the attachment zone  23  can be removed from it, e.g. by providing its  80   b  with a release agent. Alternatively, extending portions of the attachment zone  23  may be removably attached to a central portion of the attachment zone  23  substantially permanently adhered to the sponge, mesh or textile. However, other alternatives are possible. For example, the extending portions of the attachment zone  23  may be adhered to the bottom side  80   b  of the release liner  80  by a third adhesive  33  which may be relatively easily removable compared to the second adhesive  32  used to glue the central portion of the attachment zone  23  to said holder  50  including or formed as a mesh, sponge and/or textile. 
     Further, it is noted that such mesh, sponge or textile, which may form a relatively flat substance holder  50  or structure, and which may preferably be at most 3 mm thick, such as for instance about 1 mm, may be provided with the substance  60  by means of for instance impregnating, printing, or any other suitable technique. 
     Contrary to a holder which is substantially formed as a cup and which may be suitable to contain enough substance  60  to be used for instance for one or multiple weeks, a relatively flat substance holder  50 , for instance including a plate or disc  57  and/or a mesh, sponge or textile structure or the like, may be intended to be used only for a relatively brief time period, such as a single day or a single weekend only, and may for instance contain only 1 gram of substance or even less. Such substance dispenser  1  may for instance be used in a hotel room, whereas a substance dispenser  1  which may comprise more substance  60  may for instance be intended for home use. 
     As the substance  60  may be substantially completely enclosed, in particular by means of a cover  70 , especially a cover formed by the release liner  80 , the substance dispenser  1  does not need to be packed by an additional airtight cover in order to substantially screen off the substance  60  from the atmosphere in the storage state of the substance dispenser  1 . For example, it may be just packed in a box which is not substantially airtight, such as for instance a cardboard box. Such box, in particular a substantially rectangular and/or cuboid box may be stored relatively conveniently, for instance in a larger box or other container comprising multiple boxes that each may contain for instance a single substance dispenser  1 . 
     Moreover, it is noted that since the substance  60  can thus be substantially completely enclosed in the storage state of the substance dispenser  1 , it may be counteracted that the substance dries out. Additionally or alternatively, the enclosure of the substance  60 , in particular an air-tight enclosure thereof, may counteract that fragrance to be released in the flush bowl  100  may evaporate prematurely. This may facilitate that the substance dispenser  1  can be perishable and/or may counteract that perfumes or smells can contaminate other provisions stored in the same place as said dispenser  1 . Additionally or alternatively, the enclosure of the substance  60 , in particular an air-tight enclosure thereof, may counteract that substance  60  can accidently leak out of a stored dispenser  1 , for instance when the substance is accidently heated to such extent that the substance  60  melts, for instance when present in a car parked in full sun. 
     A substance dispenser  1  according to the present invention may be manufactured in any suitable manner. However, it may advantageously be manufactured by a method comprising the steps of: providing a substance holder  50 , in particular a relatively flat substance holder; providing the substance holder  50  with a substance  60 , in particular a pliable and/or paste-like substance  60 , which preferably may comprise a cleaning agent, disinfectant, air freshener, and/or a descaling agent; and attaching, preferably adhering, a cover  70 , in particular a cover  70  formed by a release liner  80 , to the substance holder  50  and/or the substance  60  held therein, such as to cover the substance  60  at the top side of the substance holder  50 . 
     Preferably, at the bottom side of the substance holder  50 , the substance held in said substance holder  50  is covered by a bottom portion  51  of the holder  50  and/or by another part  20 ,  23  of the substance dispenser  1 , such as an attachment zone  23  defined by a layer of film material  20 , in particular a layer of film material  20  which includes a flexible connecting part  21  for temporary connecting said connecting part  21  to a rim  101  of the flush bowl  100 . 
     During the manufacturing, a layer of film material  20  may be provided. A first portion thereof may be provided with the first adhesive  31 , for removably connecting the dispenser  1  to a rim  101  of a flush bowl  100 , and a second portion of said layer of film material  20 , which may define the attachment zone  23 , may be provided with the second adhesive  32  for adhering said attachment zone  23  to the substance  60 , preferably in substantially permanent manner. Further, one or more portions, for instance defining the peel-off zone  22   a  or an intermediate part  24 , may be kept free of adhesive. The film material  20  may optionally be provided with a print at any suitable moment. For example after a portion of the release liner  80  covering the attachments zone  23  is removed, in case it was present there in the first place, the attachments zone  23  may be adhered to the holder  50 , for instance after a cup-shaped part of the holder is filled with substance  60 . However, the holder  50  may alternatively be provided with substance after it is attached to the attachment zone  23 , which for instance may be advantageous in case the holder is formed as mesh, sponge or textile structure or the like. 
     Further, in particular subsequently, an opposite side  50   b  of the holder  50  may be adhered to the release liner  80 , in particular to a rear surface  80   b  thereof. Thereto, said rear surface may for instance be provided with a pre-applied adhesive, which for instance may have been temporarily covered by a second release liner (not shown) covering such pre-applied second adhesive  53  temporarily, e.g. before the holder  50  is adhered to the main release liner  80  which, contrary to such optional second release liner, can still be present in the storage state of the substance dispenser  1 . 
     For instance in order to make the substance dispenser  1  relatively compact in its storage state, a portion of the layer of film material  20  and/or the release liner  80  on which it is carried, which portion extends beyond the portion adhered to the top side  50   b  of the holder  50 , may be fold and/or bent over, for instance in a manner as is shown in  FIG. 2 . 
     Subsequently, the substance dispenser  1  may be packed in a packaging, such as a small cardboard box, which may be dimensioned to relatively snugly fit around said substance dispenser  1  in its storage state. 
     It is noted that the Figures are merely schematically representations of embodiments. The thickness of different layers and other parts are for instance not to scale, and it will be appreciated that the layer of plastic film material  20  may for instance be thinner than the release liner  80 , while said release liner  80  may in turn may be thinner than the walls of the thermoformed container forming the substance holder  50 , whereas that is not derivable from the schematic drawings. 
     Further it is noted that for the purpose of clarity and a concise description features are described herein as part of the same or separate embodiments, however, it will be appreciated that the scope of the invention may include embodiments having combinations of all or some of the features described. 
     Further, it is noted that the invention is not restricted to the embodiments described herein. It will be understood that many variants are possible. 
     For example, the adhesive may be in the form a glue applied directly to the layer of film material, but may alternatively be formed in a different manner, and may for instance be provided in the form of a double-side adhesive tape. 
     Such variants will be apparent for the person skilled in the art and are considered to lie within the scope of the invention as formulated in the following claims.