JPH10192338A - Disposable wearing absorptive article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent leakage even lying on the back by constituting a barrier means by a pad part elevated at the height of a specified mm from a top sheet surface on a liquid absorptive core area and extended to the peripheral direction of a rear waist area for which compression elastic recovery rate is higher than the one of a top sheet and a liquid absorptive core. SOLUTION: A laminated panel 1 is constituted of a pair of elastically contractible side flaps 9 opposing in a width direction, a pair of elastically contractible end flaps 10 in a length direction, a pair of barrier flaps 11 and a pad member 12 near the end flap 10 of the rear waist area 3. The compression elastic recovery rate of the pad member 12 is made higher than the one of the top sheet 13 and the liquid absorptive core 15. Thus, the barrier means for preventing fluid excreta from leaking from the end edge 8 of the rear waist area 3 is formed. The pad member 12 is constituted of a liquid absorptive elastic material and a liquid permeable sheet 17. By the constitution, the leakage from the waist port edge is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable wearable absorbent article, and more particularly to a disposable wearable diaper and the like which is effective in preventing leakage of fluid excretion of a baby, bedridden elderly person or sick person of low age. Related to goods.

[0002]

2. Description of the Related Art Conventionally, in a disposable diaper, in order to prevent the excrement from leaking from the waist edge, both ends in the length direction of the diaper are folded back to the skin contact surface thereof to prevent the excrement from being closed. A number of pockets are known (for example, see Japanese Utility Model Application Laid-Open No. 3-122823).

[0003] In such a diaper, generally, an elastic member which can be elastically contracted is attached to a free end of the end flap or an opening edge of the pocket so as to give a tendency that the free end or the opening edge rises from a skin contact surface. By doing so, it is configured to be able to receive and block the excrement flowing near the waist edge.

[0004]

However, if the wearer of the diaper is a low-aged baby, a bedridden elderly person or a sick person,
Since there are many cases where the subject lies in the supine position, the free end of the end flap or the opening edge of the pocket comes into contact with the skin contact surface and is closed by the wearer's body pressure. In such a state, the flap or pocket cannot perform its intended function, so that fluid excrement such as loose stool and diarrhea stool cannot be blocked, and as a result, leakage from the waist rim occurs.

[0005] Incidentally, known diapers generally have, in addition to the above-mentioned drawbacks, no function of absorbing and retaining the fluid excreta flowing around the waist, so that the excreta diffuses on the skin contact surface. In addition, it also adheres to the skin around the waist of the wearer, resulting in not only discomfort to the wearer but also a skin disease.

SUMMARY OF THE INVENTION In view of the above problems of the known diapers, it is an object of the present invention to prevent leakage of fluid excreta flowing near the waist edge from the waist edge even when the wearer is lying on his back. In other words, the present invention is to create a lip of a wearable article such as a diaper, particularly the back waist region of the wearable article, so as to effectively prevent the occurrence of such a problem.

[0007]

According to the present invention, there is provided a laminated panel having a front and back waist region, a crotch region therebetween, a skin abutting surface and a non-skin abutting surface. A liquid-permeable top sheet positioned on the contact surface, a liquid-impermeable back sheet positioned on the non-skin contact surface of the skin, and a liquid-absorbent core disposed therebetween; The present invention relates to an improvement in a disposable wearable absorbent article provided with a barrier means for excrement outflow, which is provided on a skin contact surface of a gyrating area and extends in a direction around the area.

[0008] According to the present invention according to an improvement, the barrier means includes:
A compression elastic recovery rate of the topsheet and the liquid-absorbent core, which protrudes at a height of at least 2 mm from the surface of the topsheet on the area of the liquid-absorbent core and extends in a direction around the back hip region; It is characterized by being composed of a pad member having a higher compression elastic recovery rate.

More specifically, the present invention has the following structure, that is, the pad member is a liquid-absorbing elastic material and a liquid-permeable sheet covering the same; An aggregate, wherein the liquid-permeable sheet is a fibrous nonwoven fabric; the fibrous aggregate is a large number of continuous filaments and extends in the width direction of the absorbent core; Having a large number of openings of 15 mm; the height of the pad member rising from the surface of the top sheet on the area of the absorbent core being 2 to 50 mm; A flexible barrier flap capable of elastically contracting in the length direction of the liquid-absorbent core extends in the same direction, and both ends of the barrier flap in the length direction of the pad member in the width direction of the liquid-absorbent core. Cover both sides by crimping It makes it the both sides is gradually lowered formed toward the opposite side edges of said absorbent core; including.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an article according to the present invention will be described below with reference to the drawings, taking a disposable baby diaper as an example.

1 to 4, the diaper comprises a laminated panel 1 having a vertically long flat shape.
The laminated panel 1 has front and rear waist regions 2 and 3, a crotch region 4 therebetween, a skin contact surface 5, and a skin non-contact surface 6. It is defined by an edge 7 and opposite longitudinal edges 8. The laminated panel 1
A pair of elastically contractible side flaps 9 opposed in the width direction, a pair of elastically contractible end flaps 10 opposed in the length direction, a pair of elastically contractible barrier flaps 11 on the pair of side flaps 9 and a back waist. A pad member 12 is provided near the end flap 10 in the zonal region 3.

The laminated panel 1 includes a liquid-permeable top sheet 13 located on the skin contact surface 5, a liquid-impermeable back sheet 14 located on the non-skin contact surface 6, and a liquid-absorbing panel disposed therebetween. 15 is comprised.

The pad member 12 has a considerably higher compressive elasticity recovery rate than the top sheet 13 and the absorbent core 15, and has a fluid excrement such as a so-called loose stool of a baby or a bedridden or sick diarrhea stool, especially fluid. Stool stool is back hip region 3
Is provided as a barrier means against leaking out beyond the edge 8 of the body. The pad member 12 is shown in FIGS.
As shown in an enlarged view in FIG. 1, the liquid absorbing device is composed of a liquid-absorbing elastic material 16 and a liquid-permeable sheet 17 covering the same.
More specifically, the liquid-absorbent elastic material 16 is obtained by opening a large number of continuous filament tows, and lightly bundling them into a substantially rod-like shape. The porosity between the filaments is 60 to 85. %, Which is suitable for infiltrating and holding fluid stool, and extends in the width direction of the absorbent core 15, and the liquid-permeable sheet 17 irritates the skin of a low-aged baby whose umbilical cord has not yet dried. It is a fibrous nonwoven fabric having a soft and smooth surface with no elasticity, and is covered with an elastic material 16 in a wound state so that a portion 12a extends to the edge 8. The pad member 12 is immovably held by being bonded to the back sheet portion 14b via the elastic member 18 to be described later at the portion 12a and to the top sheet 13 at the portion 19 by an appropriate bonding means. The pad member 12 may have any of a raised portion, that is, a cross-sectional shape of a portion where the elastic material 16 is located, such as a circle, an ellipse, and a square.
In order to achieve the intended purpose, at least 2 mm, preferably 5 to 50 mm, more preferably 10 to 30 m from the surface of the top sheet 13 on the area of the absorbent core 15
That is, it is raised at a height of m. Further, it is effective that the pad member 12 has a compression elastic recovery rate of at least 30%, preferably 50% or more, in order to achieve the intended purpose.

As the liquid-absorbing elastic material 16, the above-mentioned filaments, particularly those having hydrophobic crimps, are preferable for giving the pad member 12 a high compressive elastic recovery under wet conditions. A simple aggregate of hydrophilic crimped fibers, a nonwoven fabric such as spunlace in which the fibers are loosely entangled, and an open-cell type sponge material may be used. As the nonwoven fabric used for the liquid-permeable sheet 17, in consideration of the delicate skin of low-aged babies, those other than chemical bond, that is,
Melt blown nonwoven fabrics, which are particularly fine fibers, such as melt blown, spunlace, needle punch, thermal bond, and spun bond, are preferred. As shown in FIG. 5, such a nonwoven fabric having a large number of openings 20 through which the flowable stool can pass is more preferable for absorbing the flowable stool into the pad member 12, but is particularly preferable. The opening 20 has a diameter of 2 to 15 mm and an opening ratio of 40 to
80%. Such nonwovens are hydrophobic and / or
Alternatively, a material composed of hydrophilic fibers is used, but at least 70% by weight is not required to give an unpleasant wet feeling to the skin.
What consists of hydrophobic fibers of is preferable.

Each of the side flaps 9 has a function of preventing excretion from leaking from around the wearer's leg, and has a function of absorbing the liquid absorbent core 1.
5 and the outer portion 1 of the barrier flap 11 located on the upper surface thereof
A plurality of thread-like elastic members 2 which are formed by joining together by an appropriate bonding means 1a and which are elastically contractible in the longitudinal direction of the laminated panel 1 between the portions 14a and 11a.
1 is attached by an appropriate bonding means.

Each barrier flap 11 has the function of confining the flowable stool in the area defined between the barrier flaps and includes an outer portion 11a and a liquid absorbent core 15a.
A plurality of thread-like elastic members 22 which are formed from an inner portion 11b extending to the side and folded inward and which can elastically contract in the length direction of the laminated panel 1 and are arranged in parallel are attached to the folded portion by an appropriate bonding means. ing. Each barrier flap 11 is folded outward in the widthwise middle of the inner portion 11b under the extension of the elastic member 22, and in that state,
Both ends 11c in the length direction of the laminated panel 1 are fixed to the outer surface of the outer portion 11a by an appropriate bonding means. Further, the inner portion 11b is provided in the top sheet 1 at the portion 23.
3 is bonded by an appropriate bonding means. Therefore, the inner portion 11b has a tendency to stand up by the contraction force of the elastic member 22. As a matter of course, the inner portion 11b may be fixed to the skin contact surface 5 of the laminated panel 1 whose inner surface is opposed without being folded outward as described above. As described above, since both ends 11c of the inner portion 11b are fixed, both sides 12b of the pad member 12 in the width direction of the liquid-absorbent core 15 are moved under the pressure of both ends 11c. Therefore, a sharp step is not generated between the side portions 12b of the pad member 12 and the skin contact surface 5, and the excretion is formed between the side portions 12b and the wearer's skin. There is no gap that allows flow.

Each end flap 10 has a function of holding the diaper around the wearer's waist and preventing leakage of excrement from the waist, and extends outward from the edge of the absorbent core 15. Back sheet portion 14b and the extended portion 1 of the pad member 12 located on the upper surface via the elastic member 18
2a is formed by bonding to each other by an appropriate bonding means. The elastic member 18 is made of a relatively wide spongy tape, and is attached between the portions 12a and 14b so as to be elastically contractable in the length direction. The elastic member 18 is preferably an open-cell type polyurethane foam in terms of breathability and flexibility, and is suitable for abutting the waist of the diaper so as not to overtighten the waist of a low-aged baby. It goes without saying that the elastic member 18 having such characteristics may be used as the elastic members 21 and 22 of the side flap and the barrier flap.

The top sheet 13 has the same effect as the liquid permeable sheet 17 of the pad member 12, and preferably has an opening 20.
In addition to a fibrous nonwoven fabric having the above, a plastic film having a large number of openings, which is known as a surface material of this type of article, is used. As the back sheet 14, a moisture-permeable plastic film or a laminate sheet of the film and a fibrous nonwoven fabric is used. It will be appreciated that the side and end flaps 9, 10 are formed from such nonwovens or plastic films and therefore have a high degree of flexibility. As the liquid-absorbent core 15, a mixture of flap pulp and superabsorbent polymer particles obtained by pulverizing a wood pulp sheet is compression-molded into a panel having an appropriate thickness, which is coated with a liquid-diffusing tissue paper. What is obtained by using is used. Therefore, core 1
5 has semi-rigidity and does not lose shape in a normal diaper wearing state. Incidentally, examples of the superabsorbent polymer include, for example, starch graft polymers, cellulose modified products, crosslinked products of water-soluble polymers, self-crosslinked alkali metal acrylate polymers, and the like, which are conventionally used for absorbing sanitary napkins and disposable diapers. Known materials can be used.

The diaper, which is the laminated panel 1 having the above-described configuration, is configured such that the free end of a known pressure-sensitive adhesive tape 24 attached to both sides of the rear waist region 3 is formed on the outer surface of the back sheet 14 in the front waist region 2. It is assembled by being releasably adhered to. Such a diaper is generally called an open type, but the diaper according to the present invention is applicable not only to such an open type but also to a pants type (pull-up type) in which both side edges of the front and back waist region are connected in advance. is there.

Although not shown, the pad member 12 is
If necessary, the front waist region 2 and the inside of the barrier flaps 11 on both sides of the liquid absorbent core 15 may be used or may be used instead. Further, a liquid-absorbing elastic material 16 made of the continuous filament may be interposed between the top sheet 13 and the liquid-absorbing core 15 in at least the crotch region 4.

In the above description, the bonding state and means of each component have not been mentioned, but they are obvious to those skilled in the art. For example, as the bonding means, a hot melt adhesive, heating or ultrasonic welding may be used. Is mentioned.

[0022]

In the article according to the present invention, for example, when it is a diaper, the pad member can be designed so as to be located at a recessed portion of the wearer's back hip. Since the pad member is rich in cushioning properties, it does not give a feeling of strangeness to the wearer even if the pad member protrudes from the skin contact surface, and when the wearer is lying on his back, the pad member is worn. Since the state of elastic contact with the waist of the person is always maintained, it is possible to prevent the fluid stool from leaking outside the pad member. In particular, if the wearer is a low-aged baby whose umbilical cord has not yet dried, the diaper is generally worn loosely so as not to tighten the baby. Since the present invention exerts its effects, the present invention is particularly suitable not only for a baby of low age who excretes fluid stool, but also for a bedridden elderly or sick person who excretes fluid stool (claims 1 and 6).

The pad member can not only block the flowable stool, but also absorb it together with the excreted liquid, and can more effectively prevent the leakage (claims 2 to 5).

Although the pad member protrudes from the skin contact surface, there is no sharp step between both sides of the pad member and the skin contact surface, so that the pad member has fluidity between the wearer's skin and the skin contact surface. A gap allowing passage of the stool is not formed (claim 7).

The top sheet also allows the flowable stool to pass therethrough, and thus, together with the pad member, helps to prevent leakage.

[Brief description of the drawings]

FIG. 1 is a development plan view of a disposable diaper with a part cut away.

FIG. 2 is an enlarged sectional perspective view taken along line AA of FIG.

FIG. 3 is an enlarged sectional perspective view taken along line BB of FIG. 1;

FIG. 4 is an enlarged sectional perspective view taken along the line CC of FIG. 1;

FIG. 5 is a partial perspective view of another form of the pad member.

[Explanation of symbols]

 Reference Signs List 1 laminated panel 2 front waist region 3 back waist region 4 inseam region 5 skin contact surface 6 skin non-contact surface 11 barrier flap 12 pad member 13 top sheet 14 back sheet 15 liquid absorbent core 16 liquid absorbent elastic material 17 Liquid permeable sheet

Claims (8)

[Claims] 1. A liquid-permeable top having a laminated panel having a front and rear waist region, a crotch region therebetween, a skin contact surface and a non-skin contact surface, wherein the laminated panel is located on the skin contact surface. A sheet, a liquid-impervious back sheet positioned on the non-skin contact surface of the skin, and a liquid-absorbent core disposed therebetween. A disposable wearable absorbent article provided with a barrier means for the discharge of excrement extending in a circumferential direction of the area, wherein said barrier means is at least 2 mm from the surface of said topsheet on the area of said absorbent core. And a pad member having a compression elastic recovery rate higher than the compression elastic recovery rate of the topsheet and the liquid-absorbent core, extending in a direction around the rear hip region and rising at a height of The article characterized by the above-mentioned. 2. The article according to claim 1, wherein the pad member is a liquid-absorbing elastic material and a liquid-permeable sheet covering the same. 3. The liquid-absorbing elastic material is a fiber aggregate,
The article according to claim 2, wherein the liquid-permeable sheet is a fibrous nonwoven fabric. 4. The article according to claim 3, wherein the fiber aggregate is a large number of continuous filaments extending in the width direction of the absorbent core. 5. The article according to claim 3, wherein the fibrous nonwoven fabric has a large number of openings having a diameter of 2 to 15 mm. 6. The height of the pad member from the surface of the top sheet on the area of the absorbent core is 2 to 50.
The article according to claim 1, which is mm. 7. A flexible barrier flap elastically contractable in the length direction of the liquid-absorbent core extends in the skin contact surface of the laminated panel in the same direction, and both ends in the length direction of the barrier flap. 2. Covering both sides of the pad member in the width direction of the liquid-absorbent core in a crimped state so that the both sides are formed gradually lower toward both side edges of the liquid-absorbent core. Articles as described. 8. The article according to claim 1, wherein the topsheet is a fibrous nonwoven fabric having a large number of openings having a diameter of 2 to 15 mm.