JP2006130188A - Disposable diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable diaper capable of being kept clean without staining the skin of a wearer even if a large quantity of excrement is excreted at once, and reducing the load of disposing of the excrement when the diaper is discarded. <P>SOLUTION: The disposable diaper 1 comprises a liquid-permeable top sheet, an impermeable back sheet, and an absorber disposed between the sheet. The disposable diaper 1 consists of a front bodice, a back bodice, and a crotch portion located between the bodices. An opening part 8 through which the excrement can pass is formed on the top sheet 2 at least in a part of the crotch portion where the anus of the wearer is located, and the absorber 4 is not present in the part. In addition, an opening part through which the excrement can pass is also formed on the back sheet 3. Further, a storage bag for storing the excrement is jointed and attached to the outer surface of the back sheet in such a way as can be town off. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disposable diaper. More specifically, the present invention relates to a disposable diaper that prevents stool from adhering to the wearer's skin and is easy to dispose of after use.

  The disposable diaper is basically formed from a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between these two sheets, such as urine excreted when worn. The excrement is held on the absorbent body through a liquid-permeable top sheet, and the liquid-impermeable back sheet prevents the excrement from leaking out of the absorbent article. And various forms, such as a deployment type and a pants type, have been proposed so that they can be suitably used according to the application, and are widely used by infants and other adult incontinent persons.

  However, in such disposable diapers, urine easily passes through the top sheet and is absorbed by the absorber, but stool remains on the top sheet, so when a large amount of stool, especially loose stool is excreted, If it spreads on the top sheet and adheres to the wearer's crotch, and if it is delayed to notice the excretion of the stool, the wearer's skin may be irritated, and the diaper may leak and stain the clothing In some cases, changing diapers was a heavy burden for mothers and caregivers.

Therefore, conventionally, methods for preventing the attachment of soft stool to the wearer's skin have been studied, and an opening is formed in the crotch region of the absorbent body, and a bag containing stool is attached to the outside of the back sheet Disposable diapers (Patent Document 1, Patent Document 2, Patent Document 3) are disclosed.
JP 2003-190207 A JP 2003-190208 A JP 2003-275247 A

  However, in general, disposable diapers, when stool is excreted, only the stool is removed from the diaper and discarded in the toilet, and the diaper is discarded as household waste. In the case of a disposable diaper with a bag that accommodates stool outside the back sheet, it is possible to accommodate a large amount of stool, but when the diaper after use is discarded, the stool contained in the bag It is necessary to take out and dispose of it in the toilet, but it is difficult to take out, and in particular, the opening may be formed as small as possible to prevent the stool contained in the bag from turning back when the diaper is worn. In many cases, it takes time to process the stool.

  The present invention overcomes the problems of the conventional disposable diapers described above, and provides a disposable diaper that is easy to dispose of after use, while preventing stool from adhering to the wearer's skin when worn.

  This invention for solving the problem which the said conventional disposable diaper has includes the following each invention.

(1) It has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the two sheets, and the front body, the back body, and the front and back bodies. In disposable diapers consisting of a crotch region located,
At least in the region where the anus of the wearer in the crotch region is located, an opening through which stool can pass is formed in the top sheet, there is no absorber, and the stool can pass through the back sheet The disposable diaper is characterized in that an opening is formed on the outer surface of the back sheet, and an opening of a storage bag for storing feces is detachably joined to the periphery of the opening of the back sheet.

(2) The opening through which the feces can pass through the top sheet and the back sheet is formed in the top sheet and the back sheet, from the center of the notch opening portion, the mesh portion, and the crotch region to the back body side. The disposable diaper according to (1), wherein the disposable diaper is an opening made of any portion selected from portions where a plurality of score lines are formed.

(3) The disposable diaper according to (1) or (2), wherein the storage bag is bonded to the back sheet by heat sealing.

(4) The disposable diaper according to any one of (1) to (3), wherein the storage bag is bonded to the back sheet with an adhesive.

(5) The peel strength at the joint between the containing bag and the backsheet is 3.0 to 22.0 N / 25 mm, according to any one of (1) to (4), Disposable diapers.

(6) The disposable diaper according to any one of (1) to (5), wherein the accommodation bag is intermittently joined to the back sheet.

(7) The disposable diaper according to any one of (1) to (6), wherein a web having a large number of raised fibers is arranged on the inner surface of the accommodation bag.

(8) According to any one of items (1) to (6), a water-decomposable web that is decomposed by water is disposed on the inner surface of the accommodation bag so as to be separable from the accommodation bag. The disposable diaper described.

(9) Any one of the items (1) to (8), wherein a knob used for peeling off the storage bag is formed on at least a part of the peripheral edge of the storage bag. The disposable diaper described in the item.

In the disposable diaper of the present invention, an opening that penetrates the back sheet from the top sheet is formed at least in a region located in the anus of the wearer in the crotch region, and further, accommodation for accommodating feces on the outer surface of the back sheet The bag is detachably joined to the back sheet.
Even if a large amount of stool is excreted at a time, the disposable diaper of the present invention having such a configuration is accommodated in a storage bag attached to the outer surface of the back sheet through the opening, so that the wearer's The skin can be kept clean without getting dirty. Moreover, when discarding a diaper, since a storage bag can be peeled off and a stool can be easily discarded in a toilet, the burden at the time of discarding a diaper can be reduced significantly.

  Hereinafter, although the disposable diaper of this invention is demonstrated in detail with reference to drawings, of course, this invention is not restrict | limited at all by these.

FIG. 1 is a partially cutaway plan view of the disposable diaper of the present invention when viewed from the top sheet side, and FIG. 2 shows a state in which the disposable diaper shown in FIG. 1 is cut along line XX. It is sectional drawing.
1 and 2, the disposable diaper 1 is basically formed from a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and an absorbent body 4 disposed between the two sheets. It has a front body 5, a back body 6, and a crotch region 7 located between the front and back bodies. Moreover, the opening part 8 which penetrates the back seat | sheet 3 from the top sheet 2 is formed in the area | region where the wearer's anus of the crotch area | region 7 of the diaper 1 is located, and also the stool is accommodated in the outer surface of the back seat | sheet 3. A storage bag 13 is attached, and when the stool is excreted, it passes through the opening 8 and reaches the storage bag 13.

Further, in the case of the present invention, it is preferable to arrange a web having a large number of raised fibers on the inner surface of the accommodation bag, and by placing such a web having the raised fibers, the web is accommodated in the bag. Since the movement of the loose stool can be suppressed, it is possible to prevent the loose stool from flowing backward from the opening or oozing out from the joint when wearing the diaper.
Furthermore, in the case of the present invention, a water-decomposable web that decomposes with a large amount of water may be disposed on the inner surface of the storage bag so as to be peelable from the surface of the storage bag, and by disposing such a water-decomposable web. The stool contained in the bag can be peeled off from the containing bag together with the water-decomposable web, and can be processed as it is.

  Further, in the disposable diaper 1, elastic members 9 around the legs are arranged along both longitudinal edges in the crotch region 7, and elastic members 10 around the waist are arranged in the end region of the back body 6. A pair of three-dimensional gathers 11 are arranged on both side edges in the longitudinal direction toward the back body 6, and fastening tapes 12 for attaching and holding a diaper to the wearer are attached to both side edges of the back body 6. .

In addition, although the example which formed the rectangular-shaped opening part in the top sheet | seat and the back seat | sheet in the area | region where the wearer's anus of the crotch area | region is located in FIG. 1, as the opening part, the passage of feces is possible As long as it is, a mesh-shaped opening may be formed, or an opening made up of a large number of slits may be formed. When the opening part which consists of many slits is formed, it can prevent that the soft stool accommodated in the bag at the time of diaper wear flows backward from the opening part.
In FIG. 1, in the region where the wearer's anus is located in the crotch region, the region where the absorber is not present is formed by providing an opening in the absorber, but the region where the wearer's anus is located in the crotch region Further, the absorber may not be disposed on the back body side.

FIG. 3 is a developed plan view of the disposable diaper of the present invention as viewed from the back sheet side. In FIG. 3, in a region where the opening 8 of the crotch region 7 of the disposable diaper 1 is formed, a storage bag 13 for covering the opening 8 and storing stool on the outer surface of the backsheet 3 is disposed. The peripheral edge of the storage bag 13 is joined to the back sheet 3 through the joint 14 so as to be peeled off. Further, a knob portion 15 is formed at both ends of the storage bag 13. By forming the knob portion 15, the storage bag can be easily peeled off when the stool is discarded from the storage bag 13. .
Further, a front sheet 16 for fastening the fastening tape 12 is disposed on the back sheet 3 surface of the front body 5 of the diaper 1.

FIG. 4 is an enlarged plan view showing a state of a joint portion between the accommodation bag and the back sheet of the disposable diaper of the present invention.
In FIG. 4, the bonding portion 14 is formed by intermittently arranging a large number of rectangular bonding patterns 17 by a heat sealing process. By forming such a joint, the peel strength between the storage bag and the back sheet can be easily adjusted to an appropriate range.
The bonding pattern 17 has a length a of 0.5 to 10 mm, a width b of 0.3 to 1.5 mm, and a distance d between adjacent bonding patterns of 0.3 to 1.0 mm. preferable.
Furthermore, the peel strength of the joint is preferably 3.0 to 22.0 N / 25 mm. When the peel strength is within this range, the containing bag can be easily peeled from the back sheet. When the peel strength is less than 3.0 N / 25 mm, the strength of the joint becomes weak, and the accommodation bag may peel off while wearing the diaper. On the other hand, if the peel strength becomes stronger than 22.0 N / 25 mm, it is difficult to peel off the used storage bag when it is peeled off from the back sheet surface.
As shown in FIG. 5, the peel strength is obtained by cutting a portion of the disposable diaper 1 including the back sheet 3, the storage bag 13, and the joint portion 14 with a width of 25 mm, and using the back sheet 3 and the storage bag 13 as chucks. It is a measured value of a 180 ° peel test measured by pulling in a direction of an arrow at a speed of 200 mm / min with a Tensilon tensile tester.

Note that the bonding portion may be formed using an adhesive as well as a heat seal process, and the bonding pattern may be formed not only in a rectangular shape but also in various shapes such as a circle, an ellipse, and a triangle. is there.
In the above-described embodiment, a so-called tape-type disposable diaper in which a fastening tape is attached to both side edges of the back body as a disposable diaper has been described. The same effect can be obtained even with a pants-type disposable diaper formed by joining both side edges to form a pants-type.

  Hereinafter, although the material used in this invention is demonstrated, this invention is not restrict | limited at all by these.

  In the present invention, as the liquid-permeable top sheet, a non-woven fabric made of synthetic fiber or the like using polyethylene, polypropylene, polyester, or other thermoplastic resin as a raw material is used.

  In the present invention, the liquid-impermeable and breathable back sheet is a liquid-impermeable liquid impermeable material such as a polyethylene sheet provided with micropores or a sheet stretched by adding a filler to a thermoplastic resin. This sheet is used. When such a sheet is used, stuffiness is improved and a comfortable wearing feeling can be obtained. Furthermore, a sheet having a laminated structure in which a cover sheet made of a nonwoven fabric is bonded to the outside of such a sheet can also be used.

  In the present invention, any absorber can be used as long as it is used for absorbent articles such as ordinary diapers. In other words, a combination of cotton-like pulp and superabsorbent polymer (SAP), a material added with heat-sealing fibers, etc. can be used, and the whole is wrapped in a hydrophilic sheet such as a tissue. Is preferred. In addition, a sheet-like absorbent body such as one provided with a SAP layer on one side of a hydrophilic sheet and one in which SAP is sandwiched between two hydrophilic sheets can also be used. The shape of the absorber may be an hourglass shape or a rectangle.

  In the present invention, a liquid-impermeable plastic film, a liquid-impermeable nonwoven fabric, a composite sheet in which a nonwoven fabric is laminated on a liquid-impermeable plastic film, or the like is used as a storage bag for storing stool. be able to. Furthermore, it is preferable to arrange a web having a large number of raised fibers on the inner surface of the containing bag. By arranging such a web having the raised fibers, movement of soft stool contained in the bag can be prevented. Since it can suppress, when a diaper is worn, it can prevent that a soft stool flows backward from an opening part or oozes out from a junction part. In addition, a water-decomposable web that decomposes with a large amount of water may be disposed on the inner surface of the storage bag so as to be peelable from the surface of the storage bag. The stool can be peeled off from the storage bag together with the water-decomposable web, and can be processed as it is.

As the web having raised fibers, a nonwoven fabric in which a large number of fibers rising from the surface are arranged, or a nonwoven fabric in which a large number of loop-like fibers rising from the surface are arranged can be used.
In addition, as a water-decomposable web, a web in which a nonwoven fabric made of regenerated cellulose fibers such as rayon and a paper made of pulp fibers are entangled with a jet water flow, a paper made of a long-fiber nonwoven fabric and pulp fibers are laminated. Can be used advantageously, and webs obtained by treating paper obtained by mixing pulp fibers and regenerated cellulose fibers with a water-soluble adhesive can be used. You can also

  In this invention, it is preferable to arrange | position a pair of solid gathers along the longitudinal direction in a disposable diaper. The three-dimensional gather can be formed of various materials. For example, it can be formed using a breathable water-repellent nonwoven fabric made of synthetic fibers made from polyethylene, polypropylene, polyester, or other thermoplastic resins. Or you may use a wide thing as a nonwoven fabric which forms a side flap, and may form a three-dimensional gather in the part extended to the inner side of a diaper while forming a side flap. Furthermore, a wide thing may be used as a top sheet, and a three-dimensional gather may be formed in the part extended from the both-sides edge of the absorber of a top sheet.

  In addition, a stretchable elastic member is disposed on the side edge of the free part of the three-dimensional gather. As the elastic elastic member, natural elastic rubber, natural urethane rubber, thread rubber, flat rubber, etc. can be used as they are, and they can be used as they are. In the state, it is arranged on the side edge of the free part, and is bonded and fixed with a hot melt adhesive or the like.

  In the present invention, the elastic elastic member can be disposed along the leg opening and the waist opening in the disposable diaper. As the elastic elastic member, natural elastic rubber, natural urethane rubber, thread rubber, flat rubber, etc. can be used as they are, and they can be used as they are. It is arranged in a state and bonded and fixed with a hot melt adhesive or the like.

  In the present invention, various types of films or non-woven sheets can be used for the fastening tape, and these materials are formed singly or by laminating several kinds of materials, one end region of which is the back of the diaper. Adhering and fixing to both side edges, a hook material of a mechanical fastener is attached to the other end region. Moreover, it is preferable to have a holding part in the outer side of the part which attached the hook material.

  In the present invention, the front sheet to which the fastening tape can be fastened can be formed of a nonwoven fabric containing synthetic fibers made from polyethylene, polypropylene, polyester, or other heat-meltable resin as a raw material. The said nonwoven fabric is comprised from the fiber which consists of the said raw material synthetic fiber single-piece | unit, or what mixed the core-sheath fiber using two types of synthetic resin raw materials, or multiple types. Moreover, the nonwoven fabric may be manufactured from a heat-meltable synthetic fiber and another natural fiber or a mixed raw material of synthetic fiber.

  In the disposable diaper of the present invention, an opening that penetrates the back sheet from the top sheet is formed at least in a region located in the anus of the wearer in the crotch region, and further, the outer surface of the back sheet accommodates stool A bag is detachably attached to the backsheet. Even if a large amount of stool is excreted at a time, the disposable diaper of the present invention having such a configuration is accommodated in a storage bag attached to the outer surface of the back sheet through the opening, so that the wearer's It can keep your skin clean and clean, and when you dispose of diapers, you can easily dispose of the stool in the toilet by tearing off the storage bag. Can be greatly reduced, and is useful as a disposable diaper for infants and other adult incontinent persons.

It is a partially notched top view at the time of seeing the disposable diaper of this invention from the top sheet side. It is sectional drawing which shows the state which cut | disconnected the disposable diaper shown in FIG. 1 along the XX line. It is a top view at the time of seeing the disposable diaper of this invention from the back seat | sheet side. FIG. 3 is an enlarged plan view showing a state of a joint portion between a storage bag and a back sheet of the disposable diaper of the present invention. It is explanatory drawing which shows the measuring method of the peeling strength of the junction part of the disposable diaper backsheet and storage bag of this invention.

Explanation of symbols

1: Disposable diaper 2: Liquid-permeable top sheet 3: Liquid-impermeable back sheet 4: Absorber 5: Front body 6: Rear body 7: Inseam area 8: Opening 9: Leg elastic member 10: Waist Surrounding elastic member 11: Solid gather 12: Fastening tape 13: Housing bag 14: Joining part 15: Knob 16: Front sheet 17: Joining pattern a: Joining pattern length b: Joining pattern width d: Between joining patterns Distance of

Claims (9)

A crotch having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the two sheets, and located between the front body, the back body, and the front and back bodies In disposable diapers consisting of areas,
At least in the region where the anus of the wearer in the crotch region is located, an opening through which stool can pass is formed in the top sheet, there is no absorber, and the stool can pass through the back sheet. The disposable diaper is characterized in that an opening is formed on the outer surface of the back sheet, and an opening of a storage bag for storing feces is detachably joined to the periphery of the opening of the back sheet.   The top sheet and the back sheet have openings through which stool can pass, and are formed in the top sheet and the back sheet, a plurality of cuts from the center of the notch opening portion, the mesh portion, and the crotch region to the back body side. The disposable diaper according to claim 1, wherein the disposable diaper is an opening made of any part selected from parts formed with lines.   The disposable diaper according to claim 1 or 2, wherein the accommodation bag is joined to the back sheet by a heat seal process.   The disposable diaper according to any one of claims 1 to 3, wherein the storage bag is bonded to the back sheet with an adhesive.   The disposable diaper according to any one of claims 1 to 4, wherein a peel strength of a joint portion between the accommodation bag and the back sheet is 3.0 to 22.0 N / 25 mm.   The disposable diaper according to any one of claims 1 to 5, wherein the storage bag is intermittently joined to the back sheet.   The disposable diaper according to any one of claims 1 to 6, wherein a web having a large number of raised fibers is disposed on the inner surface of the accommodation bag.   The disposable diaper according to any one of claims 1 to 6, wherein a water-decomposable web that decomposes with water is disposed on the inner surface of the storage bag so as to be separable from the storage bag.   The disposable diaper according to any one of claims 1 to 8, wherein a knob portion used when the accommodation bag is peeled off is formed on at least a part of the peripheral portion of the accommodation bag.

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