JP4170975B2 - Disposable diapers - Google Patents

Description

  The present invention relates to a disposable diaper. More specifically, the present invention relates to a disposable diaper that has excellent wearability and prevents stool from adhering to the wearer's skin.

  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 over the top sheet and adheres to the wearer's crotch, and if it is delayed to notice fecal excretion, the wearer's skin may be irritated or even leak from the diaper and soil the clothing. In some cases, changing diapers was a heavy burden for mothers and caregivers.

Therefore, conventionally, a method for preventing soft stool from adhering to the skin of the wearer has been studied. The absorbent body is formed of two upper and lower absorbent bodies, and an opening that penetrates in the thickness direction in the crotch region is formed. , Disposable diapers with recesses for holding feces (Patent Document 1 and Patent Document 2), both sides of the absorbent body are folded twice in an S shape, and a bag for accommodating feces is formed in the central portion of the absorbent body Disposable diapers (Patent Document 3, Patent Document 4), etc. are disclosed.
JP-A-8-191857 Japanese Utility Model Publication No. 6-5614 JP-A-5-49658 JP 2002-253609 A

  However, in the case of a disposable diaper in which a concave part for holding feces is formed in the thickness direction of the absorbent body in the crotch region, it can be accommodated when the amount of feces excreted is small, but a large amount of feces are excreted at one time In some cases, it cannot be accommodated in the recess, and the overflowing stool has a problem that the skin of the wearer is stained. Moreover, in the case of a disposable diaper in which the absorbent body is folded to form a bag that accommodates stool in the center, it is possible to accommodate a large amount of stool, but the wide absorbent body is folded to form a bag. When the absorbent body in the crotch region becomes thicker and the diaper is worn, the crotch region cannot follow the movement of the wearer, so the fit in the crotch region is inferior, the feeling of wearing becomes worse, and leakage It has the problem of producing.

  The present invention provides a disposable diaper that overcomes the above-mentioned problems of conventional disposable diapers, fits well to the wearer's crotch region when worn, and prevents stool from adhering to the wearer's skin. .

  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,
The absorbent body comprises a central absorbent body arranged in the longitudinal central region of the diaper and a pair of side absorbent bodies arranged in the vicinity of both side edges in the longitudinal direction of the diaper, and the longitudinal length of the central absorbent body region including the side absorbent member in the direction both side edges near the folded to the inside of the diaper, then, the folded outwardly of the diaper at the side edges near the diaper inner side absorbent body, inside of the both side edge vicinity In the folded portion, spacer means for separating the central absorbent body and the side absorbent body is disposed at least in the crotch region . In this state, both longitudinal ends of the portion where the top sheets overlap each other A disposable diaper characterized in that the part is bonded.

( 2 ) A stretchable elastic member is disposed in an extended state in a folded portion of a region including the side absorber folded back outside in the vicinity of the side edge portion inside the diaper of the side absorber. to (1) Kouki placing disposable diapers.

( 3 ) The water absorbent sheet is detachably disposed on the top sheet in the region where the central absorbent body is disposed. (1) or (2) Disposable diapers.

( 4 ) Item (1) to ( 3 ), wherein a third absorbent body is disposed on the central absorbent body in the region on the front body side from the central portion in the width direction of the disposable diaper. The disposable diaper of any one of claim | items.

( 5 ) The disposable diaper according to any one of items (1) to (4), wherein a pair of three-dimensional gathers are disposed on both side edges in the longitudinal direction of the disposable diaper.

  The disposable diaper according to the present invention has an absorbent body composed of a central absorbent body disposed in the longitudinal central region of the diaper and a pair of side absorbent bodies disposed on both side edges in the longitudinal direction of the diaper. The region including the absorber is diffracted twice on the central absorber, and both longitudinal ends of the portion where the top sheets overlap each other are bonded.

  When the disposable diaper of the present invention having such a configuration is worn, the side absorbent body is deformed following the body shape and movement of the wearer in the crotch region, so that the fit property is good in the crotch region. . In addition, when worn, the crotch region is curved so that the region including the central absorbent body swells to the clothing side, and a pocket structure is formed between the side absorbent body and a large amount of feces is excreted at a time. Even in such a case, the stool is accommodated in the pocket structure and can be kept clean without polluting the wearer's skin.

  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 the basic folded state of the folded portion of the disposable diaper of the present invention shown in FIG. It is an XX sectional view shown.
1 and 2, a disposable diaper 1 is a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and an absorber disposed between these two sheets, and the longitudinal direction of the diaper It is basically formed from a central absorbent body 4 arranged in the central part and a pair of side absorbent bodies 5 arranged in the vicinity of both side edges in the longitudinal direction of the diaper. The front body 6, the back body 7, And a crotch region 8 located between the front and back bodies. Moreover, the area | region containing the side part absorber 5 is turned inside the diaper in the folding | turning part 9 of the longitudinal direction both sides edge of the center part absorber 4, Then, the side edge part vicinity side inside the diaper of the side part absorber 5 is made. The folded portion 10 is folded back to the outside of the diaper, and in this state, both ends in the longitudinal direction of the portion 11 where the top sheets overlap each other are bonded at the bonding portion 12.
When the disposable diaper of the present invention having such a configuration is worn, the pocket structure is formed between the side absorber and the crotch region so that the region including the central absorber is curved so as to swell toward the clothing side. Therefore, even when a large amount of stool is excreted at a time, the stool is accommodated in the pocket structure and can be kept clean without contaminating the wearer's skin.

  Further, in the disposable diaper 1, elastic members 13 around the legs are arranged along both longitudinal edges in the crotch region 8, and elastic members 14 around the waist are arranged in the end region of the back body 7. Fastening tape 15 for attaching and holding the diaper to the wearer is attached to both side edges, and a front seat 16 for fastening the fastening tape 15 is disposed on the outer surface of the back sheet 3 of the front body 6. ing.

FIG. 3 is a cross - sectional view taken along the line XX showing a state in which the spacer means is arranged at the folded portion of the disposable diaper of the present invention shown in FIG . In FIG. 3, the same parts as those in FIG. 2 are denoted by the same reference numerals, and the description of the overlapping parts is omitted.
In FIG. 3, spacer means 17 for separating the central part absorbent body 4 and the side part absorbent body 5 is disposed in the folded part 9 in the vicinity of both side edges of the central part absorbent body 4. Thus, by arranging the spacer means 17, when a diaper is mounted, a pocket structure for accommodating excrement is easily formed between the central absorbent body 4 and the side absorbent body 5.

FIG. 4 is a cross-sectional view showing a state in which the disposable diaper of the present invention shown in FIG. 1 is cut along line XX, and shows an example in which a pocket structure is easily formed in the folded portion .
In FIG. 4, the stretchable elastic member 18 is disposed in an expanded state in the folded portion 10 near the side edge portion inside the diaper of the side absorbent body 5, and the stretchable elastic member 18 is disposed in the folded portion 10 in this way. Thus, when a diaper is mounted, a pocket structure for accommodating excrement is easily formed between the central absorbent body 4 and the side absorbent body 5. Further, a pair of three-dimensional gathers 19 having standing points on the inner side of the leg-surrounding elastic member 13 and extending and contracting elastic members on the side edges of the free part are disposed on both side edges of the diaper 1 in the longitudinal direction. By arranging the three-dimensional gather 19 as described above, the effect of preventing leakage from the diaper side edge can be enhanced.
Also in FIG. 4, as shown in FIG. 3, it is also possible to arrange the spacer means inside the folded portion 9.

FIG. 5 is a cross-sectional view showing a state in which the disposable diaper of the present invention shown in FIG. 1 is cut along the line XX, and shows an example of facilitating the processing of excreted feces .
In FIG. 5, a water absorbent sheet 20 is detachably disposed on the top sheet 2 in a region where the central absorbent body 4 is disposed. By disposing the water absorbent sheet 20 in such a manner that the stool is excreted, it is only necessary to peel the water absorbent sheet and process the stool when feces are excreted.

FIG. 6 is a partially cutaway plan view of the disposable diaper of the present invention when viewed from the top sheet side, and shows an example different from FIG. In FIG. 6, the same parts as those in FIG. 1 are denoted by the same reference numerals, and the description of the overlapping parts is omitted.
In FIG. 6, the 3rd absorber 21 is arrange | positioned on the center part absorber 4 of the area | region of the front body 6 side from the width direction center line m of the crotch area 8 of the disposable diaper 1. By arranging the third absorbent body 21 on the front body side in this way, when stool, particularly soft stool is excreted, the stool diffuses to the front body side and stains the skin on the wearer's front body side. Can be prevented.

  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, but the present invention is not limited thereto, The same effect can be obtained also in 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, as the absorbent body such as the central absorbent body, the side absorbent body, the third absorbent body, etc., any of those used for absorbent articles such as ordinary diapers can be used. be able to. 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. Further, the shape of the central absorbent body may be hourglass or rectangular.

  In the present invention, the spacer means has a cushioning property so as not to give the wearer a sense of incongruity or pain when compressed with the weight of the wearer, and has a compression resistance enough to ensure a sufficient space. Any material can be used. For example, a molded body obtained by foaming urethane resin, polystyrene resin, or the like, or a fiber aggregate in which continuous fibers or short fibers made of natural fibers or synthetic fibers are integrated in a bulky structure is preferable. In addition, paper made of bulky cellulose fibers such as tissue and kitchen towel can be used in an overlapping manner. Further, the spacer means may be provided with water absorption or may be mixed with SAP.

  In the present invention, as the water absorbent sheet disposed on the top sheet, a non-woven fabric made of synthetic fibers made of polyethylene, polypropylene, polyester, or other thermoplastic resin as a raw material is advantageously used. In addition, it is also possible to use a hydrophilic fabric, tissue or the like.

  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 arranged along the leg opening, the waist opening, or the folded part 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 is 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.

  The disposable diaper according to the present invention has an absorbent body composed of a central absorbent body disposed in the longitudinal central region of the diaper and a pair of side absorbent bodies disposed on both side edges in the longitudinal direction of the diaper. The region including the absorber is diffracted twice on the central absorber, and both longitudinal ends of the portion where the top sheets overlap each other are bonded. When the disposable diaper of the present invention having such a configuration is worn, the side absorbent body is deformed following the body shape and movement of the wearer in the crotch region, so that the fit property is good in the crotch region, In addition, when worn, even in the case where a large amount of stool is excreted at a time because the region including the central absorbent body is curved to the clothing side and a pocket structure is formed between the side absorbent body in the crotch region The stool is housed in a pocket structure and can be kept clean without contaminating the wearer's skin, and is useful as a disposable diaper for adult incontinent persons including infants.

It is a partially notched top view which shows the state which looked at the disposable diaper of this invention from the top sheet side. It is sectional drawing which shows the basic folding state of the folding part of the disposable diaper of this invention. It is sectional drawing which shows the state which has arrange | positioned the spacer means in the folding | turning part of the disposable diaper of this invention. It is a sectional view showing a disposable om one other embodiment of the present invention shown in FIG. It is a sectional view showing a disposable om one other embodiment of the present invention shown in FIG. It is a partially notched top view which shows the other example of the state which looked at the disposable diaper of this invention from the top sheet side.

Explanation of symbols

1: Disposable diaper 2: Liquid-permeable top sheet 3: Liquid-impermeable back sheet 4: Central absorbent body 5: Side absorbent body 6: Front body 7: Rear body 8: Inseam area 9: Folding part 10 : Folding part 11: Top sheet overlapping part 12: Adhesive part 13: Leg elastic member 14: Waist elastic member 15: Fastening tape 16: Front sheet 17: Spacer means 18: Stretch elastic member 19: Solid gather 20: Water absorption Sheet 21: third absorber m: diaper width direction center line

Claims (5)

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,
The absorbent body comprises a central absorbent body arranged in the longitudinal central region of the diaper and a pair of side absorbent bodies arranged in the vicinity of both side edges in the longitudinal direction of the diaper, and the longitudinal length of the central absorbent body region including the side absorbent member in the direction both side edges near the folded to the inside of the diaper, then, folded outward of the diaper at the side edges near the diaper inside the side absorbent body, inside the side edges near In the folded portion, spacer means for separating the central absorbent body and the side absorbent body is disposed at least in the crotch region . In this state, both longitudinal ends of the portion where the top sheets overlap each other A disposable diaper characterized in that the part is bonded. The stretchable elastic member is disposed in a stretched state in a folded portion of a region including the side absorber folded back to the outside in the vicinity of a side edge portion inside the diaper of the side absorbent body. The disposable diaper according to 1. The disposable diaper according to claim 1 or 2 , wherein a water absorbent sheet is detachably disposed on the top sheet in a region where the central absorbent body is disposed . The 3rd absorber is arranged on the central part absorber of the field of the front body side rather than the width direction central part of the disposable diaper, The any 1 paragraph of Claims 1-3 characterized by the above-mentioned. The disposable diaper described in the item. The disposable diaper according to any one of claims 1 to 4 , wherein a pair of three-dimensional gathers are disposed on both side edges in the longitudinal direction of the disposable diaper.

Images