JP2002369839A - Absorptive article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorptive article which does not require labor for exchanging, is sufficient to deal with the leakage of feces, makes the skin free of stains and well absorbs urine by solving such problems of conventional absorptive article. SOLUTION: This absorptive article has liquid impermeable top sheets 13C and 13S, a liquid impermeable back sheet, an absorber 14 which is arranged between the top sheet 13C, 13S and the back sheet a skin contact sheet 16 which is arranged on the top sheet 13C and forms a gap 24 with the top sheets 13 and has an aperture 22 in at least a crotch region and a liquid passage section T which extends through the top sheet 13C to the absorber 14 from at least a portion of the rear body region of the skin contact sheet 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbent article which aims at reducing skin troubles on the buttocks while taking care not to attach stool to the buttocks of a wearer, and which has good urine absorption.

[0002] The "absorbent articles" in the present invention include diapers for infants or nursing care, incontinence articles for adults, and the like.

[0003]

2. Description of the Related Art As means for preventing leakage of excrement such as urine and feces in a so-called disposable diaper, there is known a method of forming a three-dimensional gather in which a sheet on which an elastic member is disposed is raised toward the wearer's skin. By extending the three-dimensional gathers from the crotch to the front body and the back body, a device for preventing leakage of excrement has been devised.

A disposable diaper having a structure devised so that the stool does not contact the skin such as the buttocks of the wearer as much as possible has been devised. In the process of replacing disposable diapers, particularly when the disposable diapers include feces, it is necessary to clean the buttocks and the like of the wearer cleanly, which tends to increase the work load. Since the burden on the stool during treatment can be reduced by preventing the wearer from touching the stool as much as possible, the stool contacts the wearer's buttocks as much as possible, especially in conjunction with reducing stool leakage. Not required.

[0005] In order to satisfy such a demand, an absorbent article in which means for preventing leakage of feces is incorporated into the back body is proposed in Japanese Patent No. 2572744 and Japanese Patent Publication No. 8-511444. The absorbent article disclosed in Japanese Patent No. 2572744 has an opening formed in a crotch region at the center of a diaper, and a sheet provided with an elastic member disposed in a longitudinal direction of the diaper adjacent to the opening. Things.
Further, the absorbent article disclosed in Japanese Patent Publication No. Hei 8-511444 has barrier cuffs adjacent to both longitudinal edges of the absorbent article, and a part of the top sheet is provided between the barrier cuffs. Are provided with pocket cuffs extending in the direction shown in FIG.

[0006]

Problems to be Solved by the Invention Patent No. 2572744
The absorbent articles disclosed in Japanese Unexamined Patent Application Publication No. H8-511444 and Japanese Patent Publication No. Hei 8-511444 each have a certain effect in that the stool does not easily come into contact with the buttocks of the wearer. In the case of the absorbent article disclosed in Japanese Patent Laid-Open Publication No. H06-27139, since the liquid-impermeable sheet covers the absorber, when urine reaches the liquid-impermeable sheet along the wearer's skin, urine flows from there. May be leaked, which is not preferable.

[0007] Similarly, in the absorbent article disclosed in Japanese Patent Publication No. Hei 8-511444, the liquid-impermeable pocket cuff covers the top sheet disposed on the absorber, so that the wearer cannot wear the liquid. When urine reaches the pocket cuff along the skin, there is a possibility that urine may leak from here, and there is also room for improvement.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to suppress the leakage of stool and the adhesion of stool to the buttocks of a wearer and to improve the absorption of urine, thereby reducing the time and effort required for replacement. To provide articles.

[0009]

SUMMARY OF THE INVENTION The present invention relates to a liquid-permeable topsheet, a liquid-impermeable backsheet, an absorber disposed between the topsheet and the backsheet, and the topsheet. A skin contact sheet that is disposed on the top sheet to form a gap between the top sheet and at least a crotch region, and has an opening in at least a crotch region; And a liquid passage portion reaching the absorber.

In the present invention, the stool is held in the space between the top sheet and the skin contact sheet from the opening, and the stool is separated from the wearer's skin by the skin contact sheet. Even if the urine reaches the skin contact sheet through the wearer's skin, the urine is absorbed by the absorber through the liquid passage due to the presence of the liquid passage through the top sheet to the absorber.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In an absorbent article according to the present invention, a liquid passage portion includes a cutout portion formed in a rear body region of a skin contact sheet, or a hydrophilic treatment portion formed on a skin contact sheet. May be included.

The liquid passage section may be formed on a top sheet overlapping the absorber.

The gap can be formed from at least both side edges in the width direction of the skin contact sheet to the back body region.

[0014] At least a part of the skin contact sheet may be an elastic member that can expand and contract.

[0015] The skin contact sheet may have a stretchable elastic member arranged along the opening.

The top sheet in the present invention can be made of non-woven fabric, woven fabric, porous plastic film, etc., which have been subjected to a hydrophilic treatment.
Polyethylene fiber, polyester fiber, nylon fiber,
Or polypropylene, polyethylene, polyester,
It can be composed of a composite fiber containing two or more nylons or the like. In particular, polyester / polyethylene conjugate fibers or polypropylene / polyethylene conjugate fibers are preferred from the viewpoint of strength, but are not particularly limited thereto. Although this top sheet can be formed of a single sheet, it is composed of a plurality of sheets, for example, a center top sheet covering the absorber and side top sheets joined to both side edges in the width direction thereof. It is also possible. In this case, the center top sheet and the side top sheet can be made of the same material, but it is also effective to form them from different materials. For example, it is possible to make the side top sheet water-repellent with respect to the hydrophilic center top sheet, or to laminate a thermoplastic resin film on the side top sheet to make it liquid-impermeable.

As the back sheet in the present invention, a liquid-impermeable polyethylene film or the like can be used. More preferably, while allowing the passage of gas molecules to prevent stuffiness, a polyethylene film formed with a number of micropores that do not allow liquid molecules to permeate, or a moisture permeable film stretched by adding a filler to a thermoplastic resin Or, by using a composite sheet in which a non-woven fabric is bonded to the outside of these films, excess moisture can be released to the outside, so that unevenness and rash are less likely to occur, and in terms of moisture permeability and feel, It can be comfortable.

The absorbent in the present invention is mainly composed of flocculent pulp and a superabsorbent substance, but is not particularly limited thereto. For example, a water-absorbing sponge or a water-absorbing sheet may be used, and any water-absorbing sheet may be used as long as it has a water-absorbing property. The shape of the absorber can be an hourglass or a rectangular outline, but an hourglass-shaped outline can provide better fit.

The above-mentioned cotton-like pulp is a chemical pulp, a mechanical pulp, or a sheet of a chemical-mechanical pulp which is made into a floc with a crusher. The pulp raw material is not limited to conifers, but may be hardwood, straw, bamboo, kenaf, or the like. The amount of the cotton-like pulp used varies depending on the composition of the intended absorbent, that is, whether it is used alone, used in a plurality of layers, or used in combination with other absorbents. Set to ~ 400 grams. In addition, synthetic fibers, a heat-sealing component, an adhesive, and the like may be mixed into the cotton-like pulp.

The above-mentioned superabsorbent material absorbs water at least 20 times its own weight, and starch, cellulose, synthetic polymer and the like can be used. Most preferred from the point of absorption performance. The shape may be any shape such as a fiber shape, a granular shape, and a sheet shape.

The skin contact sheet in the present invention preferably has liquid impermeability, and can be made of a nonwoven fabric, a woven fabric, a plastic film, or the like. Specific examples of the material include polypropylene, polyethylene, polyester, nylon, and a composite material containing two or more of these. In addition, it is also possible to use an elastic member or a material in which the elastic member is combined with a nonwoven fabric, a film, or the like, and the material is not particularly limited to these.

The elastic member used in the present invention may be a stretchable one used in conventional disposable diapers, such as urethane film, urethane thread, urethane foam, thread rubber, natural rubber, and the like. The member is arranged in an extended state at the time of manufacture, and is adhered and fixed by a hot-melt, starch-based or water-soluble glue such as carboxymethylcellulose (CMC) or a highly fluid adhesive, heating, ultrasonic waves, or the like.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the absorbent article according to the present invention is applied to a deployable diaper will be described in detail with reference to FIGS. 1 to 10. However, the present invention is not limited to these embodiments. Further, any combination or any change or modification included in the concept of the present invention described in the claims can be made, and therefore, it can be naturally applied to other technologies belonging to the spirit of the present invention.

FIG. 1 shows the developed shape of this embodiment.
2 and 3 show cross-sectional structures taken along arrows II and III-III, respectively. That is, the deployable diaper 11 in this embodiment includes a liquid-impermeable back sheet 12, a liquid-permeable center top sheet 13C superimposed on the back sheet 12, and both sides in the width direction of the center top sheet 13C. A pair of side top sheets 13S (hereinafter collectively abbreviated as a top sheet 13) joined to the edges, respectively;
And an absorber 14 disposed between the backsheet 12 and
It is arranged from the longitudinal edge 15 which becomes the opening around the waist of the front body region to the back body region so as to overlap the absorber 14 via the top sheet 13, and the widthwise outer side edge portion thereof. A skin contact sheet 16 whose both ends in the longitudinal direction are joined to the top sheet 13 is provided. The back sheet 12 and the top sheet 13 have a pair of front and rear side flap portions 17 and 18 extending outward from both side edges of the absorber 14 in the width direction.
A pair of cut-out portions 19 which become openings around the legs when worn are formed between 7 and 18.

At the side edges in the width direction of the side flap portions 18 on the rear body side, the side flap portions 17 on the front body side when worn are provided.
A pair of left and right fastening tapes 20 capable of forming an opening around the leg by the cutout portion 19 is attached, and the fastening tape 20 is joined to the backsheet 12 on the front body side. It is repeatedly peelably bonded to a base tape (not shown).

Further, from the crotch region along the longitudinal direction outside the both side edges of the absorber 14 to the front body side and the back body side, between the back sheet 12 and the top sheet 13,
A leg elastic member 21 for forming a leg gather that improves the fit around the leg when worn is fixed in an extended state.

At the center of the skin contact sheet 16 in the width direction, a cutout 22 extending from the longitudinal edge 15 serving as an opening around the waist of the front body region to the crotch region is formed as an opening of the present invention. An elastic member 23 is provided along the notch 22 in an extended state. The skin contact sheet 16 in the present embodiment is formed by stacking two sheet materials, and
3 is in a state sandwiched between these two sheet materials. Therefore, a gap 24 is formed between the top sheet 13 and the skin contact sheet 16 due to the contraction force of the elastic member 23, and a stool can be guided here. Instead of arranging the elastic member 23 on the skin contact sheet 16, it is also effective to configure the skin contact sheet 16 itself with a stretchable material.

In this embodiment, the longitudinal end of the skin contact sheet 16 on the back body region side is located closer to the crotch region than the longitudinal end of the absorbent body 14 on the back body region side. Forming a region that does not overlap with the skin contact sheet 16 on the back body region side of the body 14,
The portion of the top sheet 13 covering this region (indicated by hatching in FIG. 1) constitutes the liquid passage section T according to the present invention.

Therefore, in a state in which such a deployable diaper 11 is worn, the skin contact sheet 16 comes into close contact with the wearer's skin due to the contraction force of the elastic member 23, and urine penetrates through the notch 22 through the top sheet 13. As a result, it is quickly absorbed by the absorber 14. From the notch 22 to the top sheet 1
3 and is held in a gap 24 formed between the top sheet 13 and the skin contact sheet 16. In the case of loose stool, the moisture passes through the top sheet 13 and is absorbed by the absorber 14. In the present embodiment, the back body side edge of the skin contact sheet 16 is
3, the stool can be reliably prevented from leaking from other than the notch 22. When urine or water that adheres to the wearer's skin when washing the buttocks of the wearer enters between the skin contact sheet 16 and the wearer's skin, they pass through the skin contact sheet 16 and pass through the liquid. It is absorbed by the absorber 14 from the portion T. In particular, in adults, the buttocks of the wearer may be washed with water or the like using a washing bottle after defecation, and the water or the like after this washing often adheres to the skin of the wearer. By forming such a liquid passage portion T in an absorbent article, the expandable diaper 1
It is possible to suppress such a problem that this leaks to the outside when the wearer wears the wearer.

When the deployable diaper 11 is for adults, an auxiliary liquid absorbing pad can be inserted between the top sheet 13 and the skin contact sheet 16 and used in this case. Since the outer peripheral edge of the skin contact sheet 16 is joined to the top sheet 13, it is possible to prevent the displacement of the liquid absorbing pad.

In the embodiment described above, the length of the skin contact sheet 16 is shortened, and the rear end of the skin contact sheet 16 in the longitudinal direction is joined to the center of the rear body region of the top sheet 13. It is also possible to dispose the skin contact sheet 16 over the entire area in the direction.

FIG. 4 shows a planar development shape of another embodiment of such an absorbent article according to the present invention, and FIG. 5 shows a cross-sectional structure taken along a line VV of FIG. 5, which has the same function as the previous embodiment. Only the same reference numerals are given to the elements, and the duplicate description will be omitted. That is, the skin contact sheet 16 in the present embodiment is disposed on the top sheet 13 and extends from the front body region to the back body region, and both ends in the longitudinal direction of the skin contact sheet 16 correspond to the opening around the waist of the top sheet 13. , Which are respectively joined to both longitudinal edges 15. In the back body region of the skin contact sheet 16, a second notch 25 cut out from the longitudinal edge 15 serving as an opening around the waist of the back body region toward the crotch region is provided at the center in the width direction. The peripheral portion of the second notch 25 is joined to the top sheet 13. In the present embodiment, the second notch 25 and the portion of the top sheet 13 indicated by oblique lines in FIG.

In this embodiment, the skin contact sheet 1
6 is extended to the longitudinal edge 15 which becomes an opening around the waist of the back body region, thereby reducing the volume of the void 24 formed between the top sheet 13 and the skin contact sheet 16. The embodiment can be increased more than the embodiment, and leakage of stool can be prevented more reliably.

In the above-described embodiment, the cutout portion 22 is formed as an opening from the crotch region of the skin contact sheet 16 to its front body region, but the entire outer peripheral edge of the skin contact sheet 16 is covered with the top sheet 13. Therefore, it is possible to form an opening only on the center side of the skin contact sheet 16.

FIG. 6 shows a planar development shape of another embodiment of such an absorbent article according to the present invention, and its sectional structures taken along arrows VII-VII and VIII-VIII are shown in FIGS. However, elements having the same functions as those in the previous embodiment will be denoted by the same reference numerals, and overlapping description will be omitted. That is, the skin contact sheet 16 in this embodiment has its entire outer peripheral edge joined to the top sheet 13, and an elliptical opening 26 is cut in the center from the crotch region to the front body region. Is missing. FIG.
The hatched area in the middle is the liquid passage portion T formed on the top sheet 13 and has the same function as the first embodiment shown in FIG.

In this embodiment, the pair of elastic members 23 are arranged in parallel with each other along the longitudinal direction of the skin contact sheet 16 with the opening 26 interposed therebetween. Therefore, the opening 26 is bent inward at the opening 26, and the elastic member 23 is held in an extended state at the bent portion. These elastic members 23 can be arranged along the opening 26 so as to surround it.

In the embodiment shown in FIGS. 4 and 5, the second notch 25 is formed on the back body side of the skin contact sheet 16, but such a notch 25 is not formed. It is also possible to cope by applying a hydrophilic treatment to the rear end of the rear body region of the sheet 16.

FIG. 9 shows a planar development shape of another embodiment of such an absorbent article according to the present invention, and FIG. 10 shows a cross-sectional structure taken along the line XX of FIG. Only the same reference numerals are given to the elements, and the duplicate description will be omitted. That is, the skin contact sheet 16 according to the present embodiment has both ends in the longitudinal direction which are openings around the waist of the top sheet 13.
5 is subjected to a hydrophilization treatment in a hatched region (hereinafter, referred to as a hydrophilization treatment part) shown in FIG. Can be absorbed by the absorber 14 through the top sheet 13 from the chemical treatment section. That is,
The hydrophilized portion of the skin contact sheet 16 and the portion of the top sheet 13 that overlaps the skin contact sheet 16 constitute the liquid passage portion T of the present invention. Also in the present embodiment, since the rear outer peripheral edge of the skin contact sheet 16 is joined to the top sheet 13, a stool is provided between the top sheet 13 and the rear outer peripheral edge of the skin contact sheet 16. Problems such as leakage can be prevented beforehand.

In the above-described embodiments, the deployable diaper 11 has been described. However, the present invention is directed to a pants-type diaper in which the left and right ends of the front and rear side flap portions 17 and 18 of the deployable diaper 11 are integrally joined in advance. It can also be applied to diaper pads.

[0040]

According to the absorbent article of the present invention, a skin contact sheet having a gap between the top sheet and an opening at least in the crotch region is disposed on the top sheet. Since the liquid passage portion from at least a part of the back body region to the absorber via the top sheet is provided, it is possible to guide the stool from the opening to the gap formed between the skin contact sheet and the top sheet. Therefore, at the same time as preventing stool leakage, the stool is separated from the buttocks of the wearer by a skin contact sheet, making it difficult for the stool to contact the wearer's skin and reducing the burden when replacing absorbent articles. can do. In addition, even if the urine reaches the skin contact sea along the wearer's skin, it can be guided to the absorber by the presence of the liquid passage portion, so that leakage of urine can be suppressed.

When the gap is formed from at least both side edges in the width direction of the skin contact sheet to the back body region, the gap for holding the stool is widened, and leakage of the stool can be suppressed.

When at least a part of the skin contact sheet is formed of a stretchable elastic member, the skin contact sheet adheres to the wearer's skin, so that the fit of the absorbent member can be improved.

When the skin contact sheet has a stretchable elastic member disposed along the opening, the skin contact sheet can be brought into close contact with the wearer together with the opening, and the stool can be securely inserted through the opening. It can lead to a void formed between the sheet and the topsheet.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment in which an absorbent article according to the present invention is applied to a deployable diaper.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is a plan view of another embodiment in which the absorbent article according to the present invention is applied to a developed diaper.

FIG. 5 is a sectional view taken along the line VV in FIG. 4;

FIG. 6 is a plan view of another embodiment in which the absorbent article according to the present invention is applied to a deployable diaper.

7 is a sectional view taken along the line VII-VII in FIG.

8 is a sectional view taken along the line VIII-VIII in FIG.

FIG. 9 is a plan view of still another embodiment in which the absorbent article according to the present invention is applied to a developed diaper.

FIG. 10 is a sectional view taken along the line XX in FIG. 9;

[Explanation of symbols]

 Reference Signs List 11 deployable diaper 12 back sheet 13C center top sheet 13S side top sheet 14 absorber 15 longitudinal edge 16 skin contact sheet 17, 18 side flap portion 19 cutout portion 20 fastening tape 21 leg elastic member 22 notch portion 23 Elastic member 24 Air gap 25 Second notch 26 Opening T Liquid passage

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A61F 13/494 A41B 13/02 K 13/511

Claims (7)

[Claims] 1. A liquid-permeable topsheet, a liquid-impermeable backsheet, an absorber disposed between the topsheet and the backsheet, and the top disposed on the topsheet. A skin contact sheet having a gap formed between the skin contact sheet and at least an opening in a crotch region; and a liquid passage from at least a part of a rear body region of the skin contact sheet to the absorber through the top sheet. An absorbent article comprising a part. 2. The absorbent article according to claim 1, wherein the liquid passage portion includes a notch formed in the back body region of the skin contact sheet. 3. The absorbent article according to claim 1, wherein the liquid passage section includes a hydrophilizing section formed on the skin contact sheet. 4. The absorbent article according to claim 1, wherein the liquid passage portion is formed on the top sheet overlapping the absorber. 5. The skin contact sheet according to claim 1, wherein the gap is formed from at least both side edges in the width direction of the skin contact sheet to a rear body region.
The absorbent article according to any one of the above. 6. The absorbent article according to claim 1, wherein at least a part of the skin contact sheet is a stretchable elastic member. 7. The absorbent article according to claim 1, wherein the skin contact sheet has a stretchable elastic member disposed along the opening.