JPH10295723A - Diapers - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable diaper which makes soft excretion easily treated in disposal, does not adhere soft excretion onto skin in use, and prevents leaking, by placing an absorptive body on an area from the crotch part to the front body part and a detachable excretion treating sheet with an upright dam on the periphery of the rear body part, and placing a string to contract the dam by pulling onto the dam top part. SOLUTION: An liquid retaining absorptive body 10 is put in between a liquid permeable top sheet and a liquid impermeable back sheet on an area from the crotch part to the front body part 2 of this disposable diaper 1. An excretion treating sheet 5 is detachably placed on the area from the crotch part to the rear body part 3. The periphery part of the excretion treating sheet 5 is erected upward to form a dam 6. A water absorptive contractive string 7 is placed on the top of the dam 6. When the string 7 is pulled, the top of the dam 6 is contracted to prevent excretion from scattering and to release the excretion treating sheet 5, and also is contracted by contacting with water to contract the dam 6. Thus soft excretion treating in disposal of the disposable diaper 1 is made easier to enable to prevent soft excretion from adhering on skin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper, and more particularly, it is possible to easily dispose of a soft stool when disposing of the disposable diaper and a soft stool when the disposable diaper is worn. The present invention relates to a disposable diaper that keeps the stool away from the wearer's skin and prevents the leakage of soft stool.

[0002]

2. Description of the Related Art In recent years, disposable diapers have become widespread because of their ease of use and hygiene, and have been disposed of as household waste after use. However, it is very bad for the environment such as bad smell and hygiene that the stool is discarded without being treated at all. Therefore, it is desirable that the disposable diaper in which the stool is excreted be discarded after removing the stool in advance. If the stool excreted in the diaper is relatively hard, it can be shaken down into the toilet, but if the stool is soft, such as loose stool or watery stool, it can be washed off with water in the toilet, There is no other choice but to use a brush or brush to scrape it off or to wipe it off with a cloth or other tissue. Due to the inconvenience of removing the soft stool, it is a fact that the diaper used in a state in which the soft stool remains attached without being treated at all is often discarded as general household waste.

[0003] In order to improve the above-mentioned actual situation, conventionally, a stool processing sheet made of a water-permeable sheet, a water-disintegrable sheet, a water-soluble sheet, or the like has been arranged on a top sheet of a diaper to be used. Proposed. For example, Japanese Patent Application Laid-Open Nos.
No. 83155 describes that a stool processing sheet is releasably bonded to a used diaper.

However, these sheets are disposed over the entire length of the diaper to be used, and treatment of soft stool at the time of disposal is disclosed. However, loose stool or watery stool adheres to the skin when worn. There was no disclosure of what to do, and it was the fact that if soft feces were excreted, it would adhere to the wearer.
JP-A-60-86509 and JP-A-2-131.
No. 433 describes that a stool processing sheet having water permeability and flexibility is peelably and partially bonded on at least an outer end portion of the stool processing sheet on a diaper top sheet. I have.

[0005] However, even with these sheets, if the soft stool is excreted, it has actually adhered to the wearer. Japanese Utility Model Laid-Open Publication No. 4-32717 discloses that a seat that can be flushed into a bottom-type flush toilet that can be easily removed is disposed on the inner surface of a diaper. However, this sheet also discloses a method for treating soft stool at the time of disposal, but does not disclose that soft stool such as soft stool or watery stool adheres to the skin when worn. However, when the stool containing a large amount of water, such as watery stool, was excreted even if it was a ship bottom type, it lost its shape and easily leaked from the side edge of the diaper such as the inseam.

Japanese Utility Model Laid-Open Publication No. 4-35421 discloses a water-soluble sheet in which holes are formed in the front body so that only stool can be processed, and the periphery is gathered except for the front body. However, with respect to this sheet, even when the tab is lifted up when removing the sheet from the diaper main body at the time of disposal, the sheet cannot be removed at once, which is troublesome.
In addition, various mechanisms have been proposed for preventing soft stool such as watery stool from adhering to the wearer's skin as far as possible and preventing the stool from leaking from the diaper after use. JP-A-6-21623, JP-A-7-27
As disclosed in Japanese Patent Application Publication No. 524, a stretchable elastic body is arranged along a longitudinal side edge of a disposable diaper to form a gather in advance, and the gather is closely attached to the crotch or buttocks of a wearer. In some cases, soft stools are kept away from the wearer or leaked from the diaper. Further, as seen in Japanese Patent Publication No. 1-53361, the length of the diaper is reduced by being in contact with water, and a water-absorbing shrinkable fiber that imparts elasticity is used. There are also ones placed on both sides of the absorber, which mainly improve the feeling of wearing. However, although these disposable diapers can provide comfort when worn, they are still inconvenient when removing soft stools such as watery stools at the time of disposal.

[0007]

As described above, a conventional disposable diaper is a disposable diaper having a water-disintegrable sheet that can be flushed to a flush toilet. Because the absorber surface is in close contact with the wearer's skin, excrement such as loose stool easily adheres to the skin,
Moreover, it was easy to leak from the diaper after use. As described above, a device pursuing simplicity at the time of disposal is disclosed, but it does not seek comfort at the time of mounting.

Further, although a disposable diaper for the purpose of keeping soft stool or the like away from the skin of a wearer has been disclosed, a disposable diaper which pursues ease of disposal at the same time has not been disclosed yet. After using the diaper, it is still time-consuming to treat soft stools such as watery stool attached to the wearer's skin and the absorber surface. As described above, there has not yet been disclosed a device that achieves both convenience at the time of disposal and comfort at the time of wearing. An object of the present invention is to overcome the above-mentioned problems of the conventional diaper, so that when the diaper is discarded, soft stools such as watery stool can be easily treated and soft when worn. An object of the present invention is to provide a suitable disposable diaper that can prevent stool from adhering to the skin and prevent leakage from the disposable diaper.

[0009]

According to the present invention, there is provided a use machine comprising a liquid-permeable topsheet, a liquid-impermeable backsheet, and a liquid-retentive absorber disposed between the two sheets. In the diaper, the absorbent body is disposed at least from the crotch region to the front body of the disposable diaper, and the stool processing sheet is removably disposed from the crotch region to the back body, and the stool processing sheet is The peripheral edge rises upward, a weir is formed at the rising part, and a thread for shrinking the weir is arranged at the top of the rising part, and the thread is pulled when peeling the stool processing sheet. This makes the stool processing sheet into a drawstring shape.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A disposable diaper according to the present invention comprises a liquid-permeable top sheet, a liquid-impermeable back sheet,
In a disposable diaper having a liquid-retentive absorbent member disposed between the two sheets, the absorbent member is disposed from at least a crotch region to a front body of the disposable diaper. By arranging the absorber in this way, the function of the absorber can be limited to absorbing urine and watery stool, and it becomes possible to efficiently absorb it. Also,
An absorbent body may be placed on the back of the diaper, but it is rare for diaper users to continue using the diaper if they excrete stool, and in most cases immediately after Since it is discarded, it is preferable not to dispose the absorber in the rear body, which saves resources and is economically and environmentally preferable. Further, three-dimensional gathers for preventing leakage of urine may be arranged at both side edges of the absorber along the longitudinal direction of the diaper.

Further, the stool processing sheet is releasably joined to the inner surface from the crotch region of the disposable diaper to the back body of the present invention, and the yarn for contracting the weir by pulling around the stool processing sheet. By arranging the diaper, the function can be narrowed so as to process soft stool in the rear body of the diaper. In other words, when soft stool such as watery stool is excreted at the time of wearing, a space is provided between the soft stool excreted in the stool processing sheet and the skin of the wearer by the peripheral portion of the standing stool processing sheet. It is possible to prevent the soft stool from touching the wearer's skin, and to prevent the soft stool from leaking from the diaper. In addition, at the time of disposal, it is possible to narrow down the stool processing sheet into a drawstring shape by fixing the diaper with one hand and pulling the thread with the other hand, and pulling it further from the diaper body at once The stool processing sheet can be removed.

[0012] Further, if a yarn formed of a water-absorbing stretchable fiber which contracts in length and is provided with elasticity when it comes into contact with water is used as a yarn, water contained in stool can be transferred to the water-absorbing stretchable fiber. Absorbed, the water-absorbing stretchable fibers exhibit elasticity, and the periphery of the stool treatment sheet rises remarkably to the inside of the diaper and is narrowed down, so that the soft stool can be effectively kept away from the wearer's skin. Also, if formed from a water-disintegrable material that disintegrates with a large amount of water, such that the stool processing sheet and yarn can be flushed into a flush toilet,
Using a stool treatment sheet in which soft stool is wrapped in a drawstring shape, the stool can be removed from the diaper and discarded in a flush toilet as it is, which makes disposal easier. Also, by overlapping the absorbent body and the stool processing sheet in the crotch region, excess water such as watery stool that cannot be blocked by the stool processing sheet can be absorbed by the absorber under the stool processing sheet, It is possible to prevent the soft stool from leaking from the inseam area.

The components of the present invention and the materials used for the components will be described below. The stool processing sheet used in the disposable diaper of the present invention includes a nonwoven fabric,
A liquid-permeable sheet such as a woven cloth, a mesh-like sheet, a porous film and the like, which has a good touch and is usually used in a disposable diaper, is preferable. In this case, if the absorber is arranged so that at least a part thereof overlaps under the stool processing sheet, it is possible to absorb excess moisture contained in the soft stool and prevent leakage from the crotch region. Becomes possible. Further, the stool processing sheet may be a liquid-impermeable film that allows only water vapor to pass therethrough.
In this case, it is possible to quickly flush the soft stool under running water from a flush toilet and discard the stool-treated sheet in the form of a film. Further, when the stool processing sheet and the soft stool are discarded together in running water of a flush toilet, it is preferable that the stool processing sheet be a water-disintegrating nonwoven fabric that is collapsed by a large amount of running water.

The yarn may be of a soft material as used for ordinary disposable diapers. The yarn has elasticity in advance, and its length shrinks when it comes into contact with water, and its elasticity is reduced. It may be a yarn formed from the water-absorbing shrinkable fiber provided, or a yarn having water-disintegration properties such that it is disintegrated by a large amount of water. In particular, in order to impart comfort when worn, a yarn formed from water-absorbing stretchable fibers is preferable,
As the water-absorbing stretchable fiber, carboxymethyl cellulose fiber, acrylic hydrolysis fiber, polyvinyl alcohol fiber and the like are effective. Further, it is preferable that the water-absorbing shrinkable fiber is provided with a mechanism for introducing water from the stool processing sheet.

The top sheet is preferably a soft and soft liquid-permeable sheet such as a non-woven fabric, a woven fabric, a mesh-like sheet, a porous foam, a porous film, and the like, which is used for ordinary disposable diapers. . The constituent fibers of the nonwoven fabric and the like may be, for example, monocomponent fibers made of polypropylene, polyethylene, polyester, or the like, or composite fibers made of two or more components. In particular, polyester / polyester, polyester / polyethylene, and polypropylene / polyethylene conjugate fibers may be used. Although preferred in terms of strength, it is not particularly limited. Further, natural fibers (for example, fibers mainly composed of wood, cotton, hemp, etc.) may be used, and can be selected from materials such as a combination of synthetic fibers and natural fibers.

The back sheet is a film made of polyethylene or the like, a material in which a non-woven fabric, a woven fabric or the like is adhered to a film made of polyethylene or the like, or a liquid-impermeable sheet such as a moisture-proof non-woven fabric or a woven fabric. Further, it may be embossed in a pattern to give a cloth-like appearance, or may be partially perforated to give air permeability. Further, it is preferable to use a known breathable film that allows only water vapor to pass through, thereby reducing stuffiness when wearing a diaper.

The absorbent has a liquid-retaining property comprising cotton-like pulp, high-absorbency polymer, synthetic fiber, hot-melt component, adhesive, hydrophilic sheet and the like. Although the structure of the absorber is not particularly limited, for example, a single layer mainly composed of cotton pulp may be used. Alternatively, a layered product obtained by uniformly mixing a high-absorbent polymer substance with flocculent pulp may be used. Further, a configuration in which a uniform layer made of a superabsorbent polymer substance is sandwiched between two single layers mainly composed of cotton-like pulp may be used.

The shape of the absorber may be an hourglass, a rectangle, a T
There is no particular limitation on the character shape, and any shape may be used as long as it is not too wide and not too narrow in the crotch region. Moreover, you may compress an absorber as needed. As a compression method, the surface of the absorbent may be a continuous surface such as a roll having a smooth surface, such that the density of the absorber is substantially uniform throughout the entire surface,
The density of the absorber may partially differ depending on the roll or the like having an uneven peripheral surface, and the embossment may be a pattern arrangement in which urine or bodily fluid is guided vertically and horizontally and / or obliquely. Further, from the gist of the present invention, since the hydrophilic sheet is arranged in the crotch region and the back body, and excrement such as loose stool is promptly discarded, the absorbent body for soft stool and watery stool is slightly in the back body. It is also possible to arrange an absorber having a function limited to urine only from the crotch region to the front body.

The flocculent pulp may be a chemical pulp, a mechanical pulp, or a sheet of a chemical mechanical pulp formed into a sheet by a pulverizer. As a pulp raw material, not only conifers but also wood pulp such as hardwood and non-wood pulp such as hemp are applied. The cotton-like pulp may be used alone or in combination of two or more.

Along with the cotton-like pulp, a synthetic fiber, a hot-melt component, an adhesive or the like may be added to prevent the shape from being lost, and a thermocompression treatment may be performed after the addition. The hot-melt component is not particularly limited, but a fibrous one is preferred in view of mixing with the cotton-like pulp. Examples of the hot melt component include polypropylene, polyethylene, polyester, and polyvinylidene. Or polyester,
A composite fiber composed of two or more components such as polypropylene and polyethylene may be used. In particular, a composite fiber of polyester / polyester, polyester / polyethylene and polypropylene / polyethylene is preferable from the viewpoint of strength.

Examples of the superabsorbent polymer include starch, cellulose, and synthetic polymer.
That is, a starch-acrylic acid (salt) graft copolymer, a saponified product of starch-ethyl acrylate graft copolymer, a saponified product of starch-methyl methacrylate graft copolymer, and a saponified product of starch-acrylonitrile graft copolymer , Starch-acrylamide graft copolymer saponified product, starch-acrylonitrile-2
-Saponified acrylamide-2-methylpropanesulfonic acid graft copolymer, acrylic acid (salt) polymer, polyethylene oxide cross-linked with acrylic acid, cross-linked product of sodium carboxymethyl cellulose, polyvinyl alcohol-maleic anhydride reactant And the like.
It absorbs urine, bodily fluid and water at least 20 times its own weight, and sodium polyacrylate is most preferable from the viewpoint of absorption performance.

A layer may be used between the top sheet and the absorber to allow urine and excrement of the wearer to diffuse more quickly. As the diffusion layer, a liquid-permeable nonwoven fabric, woven fabric, porous plastic film, porous foam, reticulated foam, or the like made of polyester, polypropylene, or the like can be used. The fiber used for the nonwoven fabric may be a composite fiber composed of two or more components such as polyester, polypropylene, and polyethylene. In particular, a composite fiber of polyester / polyester, polyester / polyethylene, and polypropylene / polyethylene is preferable from the viewpoint of strength. The shape of the diffusion layer is not particularly limited, but may be surface-treated so that urine and excrement that have passed through the top sheet can be quickly transferred to the absorber.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the disposable diaper of the present invention will be described more specifically with reference to the drawings, but the present invention is not limited to the following embodiments. FIG. 1 is a perspective view of a disposable diaper 1 of the present invention in an expanded state. The front body 2 of the disposable diaper 1 has a liquid retaining absorbent 10 between a liquid permeable top sheet 8 and a liquid impermeable back sheet 9. Three-dimensional gathers 4 are arranged near both side edges along the longitudinal direction of the diaper 1. Inner cover sheet 11 for diaper 1
The absorbent body 10 is arranged from the upper crotch region to the front body 2 and the stool processing sheet 5 is provided from the crotch region to the back body 3.
Are removably arranged. The periphery of the stool processing sheet 5 rises upward, and a weir 6 is formed at the rising part. At the top of the rising part, the weir 6 is contracted by pulling, and by contact with water. A yarn 7 made of a water-absorbing shrinkable fiber whose length is shrunk and stretched is provided. Thereby, the yarn 7 made of the water-absorbing stretchable fiber contracts due to excess water such as watery stool, and the weir 6 can be raised significantly. Further, the yarn 7 made of the water-absorbing stretchable fiber has a holding portion at the end of the back body 3 of the diaper 1 to be used, and the stool processing sheet 5 is formed into a drawstring by pulling the holding portion. The diaper 1 can be easily peeled off from the diaper 1 by pulling.

FIG. 2 is a cross-sectional view taken along line XX 'of the disposable diaper 1 of FIG. 1 in an extended state. In the diaper 1 used in FIG. 2, the stool processing sheet 5 is lightly bonded to the inner cover sheet 11 with a hot melt adhesive 13. Further, the stool processing sheet 5 has a rising weir 6 formed at its peripheral edge upward, and a thread 7 made of a water-absorbing stretchable fiber for shrinking the weir 6 into a drawstring-like shape by pulling on the top of the rising part. Are located.

FIG. 3 is a cross-sectional view taken along the line YY 'of the disposable diaper 1 of FIG. 1 in an extended state. In FIG. 3, the stool processing sheet 5 overlaps the absorbent body 10 in the crotch region, so that excessive moisture in soft stool such as watery stool excreted in the crotch region is absorbed and excrement leaks from the crotch region. To prevent.

FIG. 4 shows a stool processing sheet 5 which can be used for the disposable diaper 1 of the present invention and has a different structure from that of FIG. The thread 7 made of the water-absorbing stretchable fiber is arranged on the periphery of the stool processing sheet 5, and the opening is formed in a triangular shape.

FIG. 5 shows a stool processing sheet 5 which can be used for the disposable diaper 1 of the present invention and has a different structure from those shown in FIGS. Thread 7 composed of water-absorbing stretchable fiber is stool processing sheet 5
The opening is formed in a quadrangular shape, and the rear body end of the disposable diaper 1 is open.

[0028]

As described above, the use diaper of the present invention does not make the rear body of the use diaper adhere to the wearer at the time of wearing, and provides an appropriate space between the diaper and the wearer. After holding and excreting loose stools or watery stools, the diaper can be kept further away from the wearer, and when the diaper is discarded, the stool processing sheet can be easily formed into a purse-like shape and further removed. Things.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disposable diaper according to the present invention in an unfolded state.

FIG. 2 is a cross-sectional view of the disposable diaper shown in FIG.
Sectional drawing in the X 'line.

FIG. 3 is a cross-sectional view of the disposable diaper shown in FIG.
Sectional drawing in the Y 'line.

FIG. 4 is a perspective view of a stool processing sheet having a different configuration from FIG. 1 that can be used for the disposable diaper of the present invention.

FIG. 5 is a perspective view of a stool processing sheet having a configuration different from that of FIG. 1 that can be used for the disposable diaper of the present invention.

[Explanation of symbols]

 1. Use diapers 2. Front body 3. Back body 4. Solid gathers 5. Stool processing sheet 6. Weir 7. Thread 8. 8. Liquid permeable topsheet Liquid-impermeable back sheet 10. Absorber 11. Inner cover sheet 12. Outer cover sheet 13. Hot melt adhesive 14. Waist gathering 15. Leggather 16. Fastening tape

Claims (1)

[Claims] 1. A disposable diaper having a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retentive absorber disposed between the two sheets. The disposable diaper is arranged at least from the crotch region to the front body, and the stool processing sheet is removably arranged from the crotch region to the back body, and the stool processing sheet has its peripheral edge rising upward and rising. A weir is formed at the portion where the weir is formed, and a thread for contracting the weir is arranged at the top of the rising part, and when the stool processing sheet is peeled, the stool processing sheet is drawn into a drawstring shape by pulling the thread. A disposable diaper characterized by becoming.