JPH10179638A - Adsorptive article and briefs-type disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorptive article which prevents a liquid from leaking and gives a comfortable touch to the skin. SOLUTION: This absorptive article 1 comprises a liquid permeable top sheet 2, a liquid impermeable back sheet 3, a sandglass-type absorber 4 arranged between these sheets 2, 3 and side flaps 5 which extend outward from both lateral edges of the absorber 4 and are folded back on the top sheet 2, and further, have a stretchable elastic member 7 arranged on each of the longitudinal lateral edges of the folded-back parts and the folding-back lines on the to sheet 2. In addition, both longitudinal end parts of the folded-back parts are fixed to the top sheet 2 on the absorber 4 and, at the same time, the part corresponding to an area under the thigh serves as a free edge 6. Further, the part located between the lateral edge where the stretchable elastic member 7 is arranged and the folding-back line is firmly bonded to the top sheet 2 in the longitudinal direction of the absorber 4. This part which is firmly bonded to the top sheet 2 makes a base end part and the free edge 6 rise to form double gathers 16 three-dimensionally.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbent pad used for babies or incontinent persons, an absorbent article used for disposable diapers and the like.

[0002]

2. Description of the Related Art An absorbent article is disclosed in Japanese Patent Application Laid-Open No. 3-280.
951 and JP-A-5-184622 propose an absorbent article having three-dimensional gathers that are arranged along both longitudinal edges of an absorber and that stand up toward the wearer's body.

[0003] Japanese Patent Application Laid-Open Nos. 63-21901, 2-174845, 2-71521, and 3-218752 disclose a three-dimensional structure having a double structure as a leak preventing function. Gathered ones have been proposed.

[0004]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Laid-Open No. 3-280 is disclosed.
No. 951 and Japanese Patent Application Laid-Open No. 5-184622 disclose absorbent articles along the both longitudinal edges of the absorber in order to prevent excretion from leaking from the leg openings. However, it is difficult to prevent a large amount of excrement from leaking due to long-time use or the like.

[0005] Absorbent articles such as those described in JP-A-63-21901, JP-A-2-174845, JP-A-2-71521 and JP-A-3-218752 have a leg opening. To prevent excretion from leaking from the part, a double-structured solid gather is formed, but since most of the solid gathers are formed by multiple sheets, the configuration and processing steps are complicated. It is difficult to produce at high speed, and it is difficult to provide inexpensive articles. Accordingly, an object of the present invention is to provide an absorbent article which overcomes the problems of the above-mentioned conventional absorbent articles, has an excellent effect of preventing excretion from leaking from leg openings, and can be manufactured efficiently. Is what you do.

[0006]

SUMMARY OF THE INVENTION The present invention provides a liquid-permeable top sheet, a liquid-impermeable back sheet, an hourglass-shaped absorber disposed between the two sheets, and a side edge of the absorber. An absorbent article having a side flap extending outward, wherein the side flap is folded back on the top sheet, and a stretchable elastic member is disposed on a longitudinal side edge and a folding line of the folded back portion. And, both ends in the longitudinal direction of the folded portion are adhesively fixed to the top sheet on the absorber and a portion corresponding to the crotch region is a free edge, and further, a side edge on which the elastic member is disposed. A portion between the folding line and the top sheet is adhesively fixed to the top sheet along the longitudinal direction of the absorbent article. It relates to an absorbent article, wherein the double standing gathers erected upward is formed an adhesive fixing portion as the base end portion of the.

[0007] The present invention also relates to an absorbent article, wherein the side flap is formed by extending the back sheet outward from both side edges of the absorber.

Further, the present invention relates to an absorbent article, wherein the side flap is formed of a sheet separate from a top sheet and a back sheet extending from both side edges of the absorber.

Further, the present invention provides the above absorbent article,
It consists of an exterior sheet that surrounds the waist circumference from the wearer's belly and holds the absorbent article against the wearer, and the absorbent article is arranged in a central region along the longitudinal direction of the exterior sheet,
A pants-type disposable diaper having a waist opening and a pair of leg openings formed by joining both side edges of a front body and a back body of the exterior sheet, and having elastic members attached along these openings. About.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An absorbent article according to the present invention comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, an hourglass-shaped absorber disposed between these sheets, and an absorber. Side flaps extending outward from both side edges of the hourglass-shaped absorber, the side flaps extending outward from both side edges of the hourglass-shaped absorber are folded back on the top sheet, and A stretchable elastic member is arranged on the longitudinal side edge and the folding line, and both longitudinal ends of the folded portion of the side flap are adhesively fixed to a top sheet on the absorber, and a portion corresponding to a crotch region. Is a free edge, and a portion between the side edge where the elastic member is disposed and the folding line is bonded and fixed to the top sheet along the longitudinal direction of the absorber.

In the absorbent article according to the present invention having such a structure, the free edge and the folding line on which the elastic member is arranged with the adhesively fixed portion of the side flap as the base end in the crotch region when worn are upward. In this case, a double solid gather is formed to stand up, so that it has an excellent effect of preventing leakage. In addition, the absorbent article having such a configuration,
Since the manufacturing method is simple, it can be manufactured more efficiently than the conventional manufacturing method of an absorbent article having double three-dimensional gathers.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings, but the present invention is not limited to these embodiments. FIG. 1 is a perspective view showing a state in which an absorbent article 1 according to an embodiment of the present invention is developed. The absorbent article 1 shown in FIG. 1 includes a top sheet 2, a back sheet 3, an hourglass-shaped absorber 4, and side flaps 5 extending outward from both side edges of the absorber and folded on the top sheet 2.
The end portions in the longitudinal direction of the folded portion of the side flap 5 are adhesively fixed to the wide portion of the hourglass-shaped absorber 4, and the central region rises upward to form a double solid gather 16. I have.

FIG. 2 is a sectional view taken along the line AA 'of FIG. 1, that is, a sectional view of a narrow portion corresponding to a central portion along the width direction of the hourglass-shaped absorber 4, and FIG. FIG. 3B is a cross-sectional view taken along a line B ′, that is, a wide portion of the hourglass-shaped absorber 4. As shown in FIG. 2, at a central portion along the width direction of the absorber 4, the side flaps 5 are bonded and fixed to the back sheet 3 with an adhesive 9, and extend outward from both side edges of the absorber 4 in the longitudinal direction. It is folded over on sheet 2. Also, along the side edge of the absorber 4, the stretchable elastic member 7 is arranged in an extended state on the folded line 14 of the side flap 5 and the folded side edge 15, and the folded line 14 on which the stretchable elastic member 7 is arranged. A portion between the side edge 15 and the side edge 15 is adhered and fixed to the top sheet 2 along the side edge of the absorber 4, and this serves as a base end portion 8. Standing up from the base end 8, a double solid gather 16 is formed. Further, as shown in FIG. 3, a side edge 15 of the folded longitudinal end of the side flap 5 is adhesively fixed to the top sheet 2.

FIG. 4 is a sectional view taken along the line AA 'of FIG. 1 showing another embodiment of the absorbent article of the present invention different from that of FIG. In FIG. 4, the back sheet 3 is extended outward from both side edges of the absorber 4 to form side flaps, and the elastic members 7 are arranged in the same manner as described in FIG. 16 are formed.

FIG. 5 is a perspective view of the pants-type diaper 10 formed by arranging the absorbent article 1 of the present invention in the central region along the longitudinal direction of the exterior sheet 11 in which the front and rear adhesive portions are opened and opened. is there. Here, the absorbent article 1 is disposed in a central region along the longitudinal direction of the exterior sheet 11 in which the leg-elastic elastic members 12 and the waist-elastic members 13 are arranged, and the front body and the rear body are bonded and closed in advance. It is held so as to surround the waist from the wearer's belly. In addition, in the said Example, although the height of the thing located in the inside of an absorptive article and the thing located outside are the same, the double three-dimensional gather 16 does not necessarily need to be the same height, The height of the three-dimensional gather located on the inside may be higher than that on the outside, or the one located on the inside may be lower than the one located on the outside.

The top sheet 2 used in the present invention
Uses a liquid-permeable nonwoven fabric made of polyethylene, polypropylene or other thermoplastic fibers. Further, the back sheet 3 is a liquid-impermeable polyethylene sheet when the absorbent article is used alone, preferably a moisture-permeable liquid-impermeable sheet obtained by adding a filler to a thermoplastic resin and stretching, or Further, since the texture such as touch is excellent, at least one surface of the liquid-impermeable sheet, a card made of polypropylene, polyester, polyethylene, or the like, a nonwoven fabric such as spunbond is laminated or laminated and bonded. Suitably, a sheet is used.

Further, this absorbent article is held by the wearer with an exterior sheet surrounding the waist from the belly of the wearer. For example, as shown in FIG. 5, both sides of the front body and the back body are adhesively closed. When the back sheet 3 is used as an inner pad of a pants-type diaper, a nonwoven fabric made of polyethylene, polypropylene, or other thermoplastic fibers subjected to a water-repellent treatment or the like may be used.

The absorber 4 is preferably a mixture of fluff pulp and a high-absorbency polymer in combination with a high-absorbency polymer, and may be a single absorbent paper or a mixture or laminate of heat-fused fibers. Further, it is preferable to adopt a structure in which the whole is wrapped in a tissue.

When the back flap 5 is formed by extending the back sheet 3 outward from both side edges of the absorber, the side flap 5 is made of the same material as the back sheet to be used. When formed as a separate sheet, such as a liquid-impermeable polyethylene sheet or a polyethylene sheet provided with air permeability by giving micropores, or
A sheet provided with moisture permeability such as a moisture-permeable liquid-impermeable sheet which is stretched by adding a filler to a thermoplastic resin, and furthermore has an excellent texture such as touch, so that at least one side of the liquid-impermeable sheet Further, a composite sheet obtained by laminating or laminating a nonwoven fabric such as a card made of polypropylene, polyester, polyethylene, or the like, or a spun bond or the like can be used. In addition, when a nonwoven fabric made of polyethylene, polypropylene, or other thermoplastic resin subjected to water repellent treatment or the like is used, a good feeling such as touch can be obtained and high air permeability can be obtained, which is also effective in preventing stuffiness.

The elastic elastic member 7 provided on the side flap 5, the elastic elastic member 12 around the legs and the elastic member 13 around the waist constituting the pants-type diaper 10 are made of a urethane film, urethane yarn, urethane foam, yarn. Stretchable elastic members used for ordinary absorbent articles such as rubber can be used as they are, and these stretchable elastic members are bonded and fixed in a stretched state by a hot melt adhesive.

Further, as a bonding method for forming the base end portion 8, hot melt bonding, pressure welding, ultrasonic melting, or the like can be used alone or in combination. Also,
When the front and back sides of the pants-type diaper 10 are adhesively closed, the state in which both side edges protrude outward, or the state in which both side edges protrude inward, or one side edge is outside, the other With the side edges protruding inward, hot melt adhesive, pressure welding, ultrasonic melting, etc. are joined alone or in combination along the outermost sides of both sides.

At least the absorbent article 1 of the exterior sheet 11
The central region in the longitudinal direction in which is disposed is a liquid-impermeable polyethylene sheet, preferably a sheet provided with moisture permeability such as a liquid-impermeable sheet having a moisture-permeable property obtained by adding a filler to a thermoplastic resin. It is preferable that the portion other than the portion where the absorbent article 1 is disposed has at least two layers for disposing the leg-elastic elastic member 12 therebetween, and suppresses a rise in humidity due to sweating and excrement of the wearer, Polyethylene, a nonwoven fabric made of a thermoplastic resin such as polypropylene, or a polyethylene sheet provided with air permeability by providing micropores, and further stretched by adding a filler to the thermoplastic resin to prevent rash that may occur from stuffiness or stuffiness It is preferable to use a moisture-permeable sheet, and to use a nonwoven fabric at least for the inner part directly touching the wearer.

In order to further improve the fit of the diaper to the wearer, a plurality of outer sheets 11 are provided at least partially in the width direction of the front body and the back body around the waist of the wearer. An elastic member may be provided. More preferably, at least a sheet used for a portion other than the portion where the absorbent article 1 is arranged has a thickness of 5 to 40 μm.
Polyester fiber such as polyethylene terephthalate fiber on at least one surface of a polyurethane-based film having a thickness of moisture permeability and elasticity, a natural rubber sheet, and a foam sheet, on at least one surface of an elastomer nonwoven web alone or an elastomer nonwoven web, Polyolefin fiber, polyamide fiber such as nylon fiber, cellulosic fiber such as cotton fiber, pulp fiber and a mixture thereof selected from the group consisting of a material selected from the group consisting of a fiber layer made of hydroentangled or laminated web. By using a combination thereof or a laminate obtained by laminating a moisture-permeable and stretchable thermoplastic resin such as a polyurethane-based or polyolefin-based resin on the fiber layer, it is possible to prevent stuffiness as well as the fit.

In the above embodiment, a three-dimensional pants-type disposable diaper is shown in advance. However, both sides of the front and rear bodies of the exterior sheet 11 are not bonded and closed, and the width direction of the diaper front or rear body is not changed. A fastening means may be provided on both sides, and the front and rear bodies of the diaper may be bonded and fixed by the fastening means when the diaper is used.

[0025]

As described above, in the absorbent article of the present invention,
In the crotch region when worn, the free edge where the elastic member is arranged and the folding line are erected upward with the adhesively fixed portion of the side flap as the base end, thereby forming a double solid gather, thereby preventing leakage. It is possible to provide an absorbent article having excellent effects. In addition, in the absorbent article having such a configuration according to the present invention, since the manufacturing method is simple, compared to the conventional method of manufacturing an absorbent article having double three-dimensional gathers, an absorbent article that is manufactured more efficiently can be obtained. Can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which an absorbent article of the present invention is developed.

FIG. 2 is a sectional view taken along line AA ′ of FIG. 1;

FIG. 3 is a sectional view taken along line BB ′ of FIG. 1;

FIG. 4 is a cross-sectional view taken along the line AA ′ of FIG. 1 showing another example of the absorbent article of the present invention, which is different from FIG.

FIG. 5 is a perspective view in which an adhesive part of a front body and a back body of a pants-type diaper formed by arranging the absorbent article of the present invention in a central region along a longitudinal direction of an exterior sheet is opened and developed.

[Explanation of symbols]

1: Absorbent article, 2: Top sheet, 3: Back sheet, 4: Absorbent, 5: Side flap, 6: Free edge,
7: Elastic elastic member, 8: Base end, 9: Adhesive, 10: Pants type diaper, 11: Exterior sheet, 12: Elastic elastic member around leg, 13: Elastic elastic member around waist, 14: Flap of side flap Line, 15: side edge of folded side flap, 16: solid gather

Claims (4)

[Claims] 1. A liquid-permeable top sheet, a liquid-impermeable back sheet, an hourglass-shaped absorber disposed between the two sheets, and side flaps extending outward from both side edges of the absorber. The side flap is folded on the top sheet, and a stretchable elastic member is disposed on a longitudinal side edge and a folding line of the folded portion, and the folded portion has Both ends in the longitudinal direction are adhesively fixed to the top sheet on the absorber and a portion corresponding to the crotch region is a free edge, and furthermore, a portion between the side edge where the elastic member is arranged and the folding line. Are adhesively fixed to the top sheet along the longitudinal direction of the absorbent article, and thereby, in the crotch region at the time of wearing, the adhesively fixed portion between the side edge of the side flap and the folding line is attached. Absorbent article characterized in that the double standing gathers erected upward as end portion. 2. The absorbent article according to claim 1, wherein the side flaps are formed by extending the back sheet outward from both side edges of the absorber. 3. The absorbent article according to claim 1, wherein the side flap is formed of a sheet separate from a top sheet and a back sheet extending from both side edges of the absorber. 4. An absorbent article according to any one of claims 1 to 3, comprising an outer sheet surrounding the waist from the abdomen to the waist and holding the absorbent article against the wearer. ,
The absorbent article is arranged in a central region along the longitudinal direction of the exterior sheet, and joins both side edges of a front body and a rear body of the exterior sheet to form a waist opening and a pair of leg openings. A pants-type disposable diaper to which elastic members are attached along these openings.