JP3130438B2 - Disposable diapers - Google Patents

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 to a disposable diaper having a stool holding pocket.

[0002]

2. Description of the Related Art Conventionally, a technique for providing a stool holding recess in a liquid-absorbent core in a disposable diaper is known. For example, Japanese Unexamined Utility Model Publication No. Hei 6-5614 discloses a technique in which a concave portion is provided in the buttocks abutting portion of a liquid-absorbent core, and a valve portion is formed by a surface sheet located at an opening surface of the concave portion. The stool flows into the recess by pushing and opening the valve portion, and the closed valve portion prevents the stool from flowing out and touching the skin.

[0003]

In the above-mentioned known diaper, it is necessary to prevent the concave portion provided in the core from being out of shape. For this purpose, the inner wall of the concave portion is solidified, and a durable liquid permeating surface sheet is used. There is a problem that it has to be covered with a sex sheet. Otherwise, the fine ground pulp and superabsorbent polymer particles that make up the core will leak through the gaps in the valve and cause significant discomfort to the wearer. The core is usually coated with tissue paper, but since the wet strength of the tissue paper is extremely low, it cannot be a sufficient leak-proofing means for ground pulp and the like.

According to the present invention, the core is composed of upper and lower layers, and the upper layer core is divided into two parts in the front-rear direction to be separated from each other, and the surface sheet is folded between the separated parts from the separated part. The task is to solve the problem.

[0005]

Means for solving the above problems The present invention is as follows to solve the above problems.

The present invention is based on the premise that a liquid-absorbing core is interposed between a liquid-permeable front sheet and a liquid-impermeable backsheet.
And a stool holding pocket is formed at the
That is a disposable diaper.

[0007] On the above premise, the present invention is characterized by
Rollers, the core is constituted by an upper layer core and the lower layer core which bisects the thickness direction, and Ru is composed of a front core and the rear side core the upper core bisects the longitudinal direction at the hip contact portion toward the lower layer core doo is in said rear end and front end - the the front end of the rear end and the rear-side core of said front cores in the longitudinal direction spaced necessary length, the surface sheet covering the upper surface of the upper layer core with Bent, and the bent portion is folded between the upper and lower layer cores.
Therefore, a stool holding pocket extending in the lateral direction of the buttocks abutting portion is formed.

[0008]

In the diaper constructed as described above, the surface sheet folded between the upper core and the lower core forms a pocket which opens toward the rear end and / or the front end of the diaper, and retains stool there. be able to.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the disposable diaper according to the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 and 2 are a partially cutaway perspective view of the diaper 1 and an end view taken along the line II-II. However, the diaper 1
In FIG. 1, it is in an extended state, and in FIG. 2, it is in a state of being worn and curved in the front-rear direction.

In FIG. 1, a diaper 1 has a liquid-permeable surface seal.
, A liquid-impervious back sheet 3, and a liquid-absorbent core 4, and the front and rear directions are a front body 6, a back body 7, and both bodies 6,
And a crotch region 8 located between the two. On both left and right sides of the diaper 1, elastic members 9 are attached to any one of the inner surfaces of the front and back sheets 2 and 3 in an extended state along the concave portions around the legs.
The back body 7 has conventional tape fasteners 10 on both left and right edges, and a waist elastic member 11 is attached to the inner edge of one of the front and back sheets 2 and 3 in an extended state. A part near the rear body 7 of the inseam region 8 is a buttocks contact region, and there is a groove portion 15 extending in the width direction.

As shown in FIG. 2, the core 4 is composed of an upper core 20 and a lower core 21 which divide the thickness direction into two, and the upper core 20 is composed of a front core 20A and a rear core 20B with a groove 15 interposed therebetween. . The rear end 22 of the front core 20A and the front end 23 of the rear core 20B are separated from each other by a required dimension in the front-rear direction to form a side wall of the groove 15. The front core 20
The front end 24 of A and the rear end 25 of the rear core 20B are joined to the lower core 21 by a hot melt adhesive 26. The surface sheet 2 covering the upper core 20 has grooves 15.
A front pocket 28 that opens toward the rear end of the diaper 1 by folding along the both side walls toward the lower core 21 and folding the bent part between the upper and lower cores 20, 21; And a rear pocket 29 opening toward the rear. The front and rear pockets 28 and 29 are formed by the front core 20A and the rear core 20B in the thickness direction.
Open your mouth wide by separating from.

The surface sheet 2 is provided with the diaper 1 in the groove 15.
Since the entire width of the diaper 1 is bent and folded (see FIG. 1), the surface sheets 2 overlapping each other near the left and right side edges of the diaper 1 are joined to each other, and body fluid leaks from the overlapped portion. I do not have it.

In the diaper 1 constructed as described above, the excreted stool can be placed in the front and rear pockets 28, as shown by arrows in FIG.
Since the stool enters the surface 29, the stool does not spread on the surface sheet 2 and does not spoil the wearer's skin. Particularly when loose stool is excreted, the front and rear pockets 28 and 29 have a remarkable effect. However, when the front and rear pockets are not required in the diaper 1, only one of the front and rear pockets 28 and 29 can be left, and the other can be omitted.
Further, the diaper 1 is provided with a well-known elastic leak-proof embankment (flap) extending in the front-rear direction on both left and right sides and having an upward standing tendency from the skin contact surface of the diaper.
Can be prevented from leaking laterally from the left and right sides.

In the diaper 1, the front and back sheets 2, 3 and the core 4 may be made of a material commonly used in the art. In order to join the members, in addition to an adhesive technique using a hot melt adhesive or the like, a welding technique for a hot-melt material can be used. The core 4 is coated with tissue paper according to a conventional technique, and the ground pulp and the superabsorbent polymer constituting the core 4 can be held in a required shape.

[0016]

In the diaper according to the present invention, stool, especially soft stool, can be held in a pocket opening toward the rear end and / or front end of the diaper, so that the stool stains the wearer's skin. There is no. The absorbent core is covered with a surface sheet and, if necessary, a tissue paper.
Since it can be coated with a par, there is no fear that the pulp and the superabsorbent polymer particles constituting the core leak out of the diaper as in the prior art.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view of a diaper.

FIG. 2 is an end view taken along line II-II of FIG. However, the diaper is in a state of being curved in the front-rear direction.

[Description of Signs] 1 Diaper 2 Front sheet 3 Back sheet 4 Core 20 Upper core 21 Lower core 20A Front core 20B Rear core 28 Pocket (front pocket) 29 Pocket (rear pocket)

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A61F 13/494 A61F 5/44 A61F 13/15

Claims (1)

(57) [Claims] 1. A liquid-absorbent core is interposed between a liquid-permeable front sheet and a liquid-impervious back sheet to hold a stool at a buttock contact portion.
A disposable diaper pocket is formed, the core is constituted by an upper layer core and the lower layer core which bisects the thickness direction, and, after the front core the upper core bisects the longitudinal direction at the hip contact portion It is composed of a side core
The lower layer core doo is in said rear end and front end - Re Rutotomoni said that the front end of the rear end and the rear-side core of said front cores in the longitudinal direction spaced necessary length, the surface sheet covering the upper surface of the upper layer core in towards and bent, and, by folding write Murrell that between the bent portion is the upper and lower layer core, the equivalent
The stool holding pocket extending in the lateral direction of the contact portion is formed.
The diaper as described above.