JPH077620U - Disposable diapers - Google Patents

Abstract

(57) [Summary] [Purpose] A disposable diaper is provided with a recess for accommodating stool. [Structure] In a disposable diaper 1, an annular member 20 on a surface of a top sheet 2 of a diaper body 5 in which a liquid-absorbent core 4 is interposed between a top sheet 2 and a back sheet 3, and a covering sheet 21 for the member 20. And are provided to form a recess 22 for accommodating stool.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a disposable diaper.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, in order to improve the wearing feeling of a disposable diaper, a diaper having a structure capable of separating excreted feces from the skin has been proposed. For example, in Japanese Utility Model Laid-Open No. 15921/1991, a liquid-absorbent core is provided with a recess for accommodating stool and the core is covered with a liquid-permeable sheet, while a perforated sheet is provided at a position separated from the liquid-permeable sheet. It has been proposed to provide a diaper in which a space is provided between the two sheets.

[0003]

[Problems to be solved by the device]

 In the above-mentioned known technique, stool is devised so that it is separated from the skin by passing through the perforated sheet and moving to the recess. However, viscous stools are difficult to permeate through perforated sheets, and this technique cannot achieve the intended purpose unless it is so soft. Rather, this technique has a problem that stool may spread between the skin and the perforated sheet. In addition, the structure in which a concave portion is provided in the liquid-absorbent core to accommodate stool does not always adhere well to the anus and the periphery of the concave portion, so that stool cannot be properly accommodated in the concave portion.

In view of the above, the present invention solves the above-mentioned problems of the prior art by forming a toilet bowl recess on the surface of the surface sheet in the crotch region by a liquid-absorbing annular member and a liquid-permeable covering sheet. The task is to do.

[0005]

[Means for Solving the Problems]

 The points that this device uses as means for solving the above problems are as follows.

This invention is premised on a disposable diaper in which a liquid-absorbent core is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet.

Under such a premise, a liquid-absorbent annular member is provided around the central region of the crotch part of the topsheet, and the annular member is covered except for the topsheet portion which is surrounded by the inner peripheral edge of the annular member. It is a feature of the present invention that a liquid-permeable sheet is provided to form a toilet bowl recess where the surface sheet portion is exposed at the bottom.

[0008]

[Action]

 In the diaper thus configured, the annular member and the covering sheet form a raised portion around the central region of the crotch portion of the surface sheet, and the inside of the raised portion can be used as a toilet bowl recess. The ridge has an annular shape, and when it is applied around the anus, it adheres well to the skin. As a result, stool will be excreted directly in the recesses and will not spread throughout the diaper and stain the skin.

[0009]

【Example】

 The details of the disposable diaper according to the present invention will be described below with reference to the accompanying drawings.

1 and 2 are a partially cutaway perspective view of a disposable diaper 1 and an end view taken along line II-II thereof. The diaper 1 includes a diaper body 5 in which a liquid-absorbent core 4 is interposed between a liquid-permeable topsheet 2 and a liquid-impermeable backsheet 3, and a liquid-absorbent ring formed on the surface of the topsheet 2. The member 20 and a liquid-permeable covering sheet 21 for covering the member 20.

The main body 5 is composed of a front body 10, a back body 11, and a crotch portion 12 interposed between the two bodies 10, 11, and a leg flap 13 extending in the front-rear direction on the left and right sides, and front and rear ends. The waist elastic members 14 and 15 and the tape fasteners 16 extending outward are provided on both side edges of the rear body 11. The front and rear ends and the inner edge of the flap 13 are joined to the surface sheet 2, and the outer edge is a stretchable free edge to which an elastic member 17 is attached.

In the central region of the crotch part 12 of the main body 5, there is a liquid-absorbent annular member 20 formed on the surface of the topsheet 2 so as to become thinner from the inner peripheral edge to the outer peripheral edge. A liquid-permeable cover sheet 21 is provided on the upper side. The annular member 20 is intermittently joined to the topsheet 2 and the covering sheet 21 with a hot-melt adhesive (not shown), and both the sheets 2 and 21 are arranged around the annular member 20. They are joined to each other intermittently so that they do not move relative to each other. By doing so, the annular member 20, the topsheet 2, and the covering sheet 21 form a recess 22 having the topsheet 2 as the bottom surface and the annular member 20 as the peripheral wall. The recess 22 has an opening 23. The covering sheet 21 has openings that are substantially the same in shape and size as the openings 23, and is large enough to cover the annular member 20. However, the opening defined by the inner peripheral edge of the covering sheet 21 is formed smaller than the opening 23, and therefore, as shown by the chain line 23 ′ in FIG. 2, the inner peripheral edge appropriately extends toward the center of the opening 23. You may have. This has the effect of preventing stool contained in the recess 22 from overflowing from the peripheral edge of the recess 22, as will be described later.

In the diaper 1, the concave portion 22 is for accommodating excreted stool, and the annular member 20 in the form of a protrusion from the surface sheet 2 is applied around the anus. Therefore, the recessed portion 22 is provided at a portion that comes into contact with the anus of the diaper 1, specifically, at a position approximately at the center of the crotch or slightly closer to the back body. The central region of the crotch in this invention means such a part. The shape of the opening 23 of the recess 22 can be any suitable shape such as a circle, an ellipse, an oval, or a rectangle. If it is circular, its diameter can be 40 to 120 mm. The depth is the thickness of the annular member 20, and the value can be set to 5 to 40 mm. The width W of the annular member 20 does not have to be constant along with its thickness, but rather, it is preferable that the annular member 20 is appropriately changed in the front-rear direction and the width direction of the diaper 1 so that the member 20 can be brought into close contact with the wearer's skin without feeling uncomfortable. .

The annular member 20 uses, as its constituent material, cotton, rayon, thermoplastic synthetic fibers, hydrophilic synthetic thermoplastic fibers, or the like, and has a higher compression stability than the core 4. . It is preferable that these have a fiber length of 5 mm or more and do not become entangled with each other and easily disentangled during use to form fiber waste. More preferably, a synthetic fiber material composed of crimped fibers and having good cushioning properties is used. As a result, the annular member 20 adheres well to the buttocks of the wearer and does not lose its elasticity even if the diaper 1 becomes wet due to urination or defecation, so that the recess 22 deforms. Never.

In order to make the diaper 1, a diaper body 5 is prepared in advance by using a well-known technique, and the joined product of the annular member 20 and the covering sheet 21 prepared in a separate step is superposed on the surface of the surface sheet 2 thereof. And glue them together. In the main body 5, a non-woven fabric or a perforated plastic sheet can be used for the top sheet 2, a plastic sheet for the back sheet 3, and crushed pulp or a mixture of crushed pulp and a superabsorbent polymer for the liquid-absorbent core 4. Wear. Also, the same material as the topsheet 2 can be used for the cover sheet 21. A material different from that of the liquid-absorbent core 4 can be used for the annular member 20.

[0016]

[Effect of device]

 In the diaper according to the present invention, a recess for accommodating stool is formed by adhering the annular member and the covering sheet on the surface of the surface sheet. Can be housed in

By giving the annular member a higher compression recovery property than the core, the adhesion to the skin is improved, and stool can be reliably accommodated in the recess.

[Brief description of drawings]

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

FIG. 2 is an end view taken along line II-II of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disposable diaper 2 Topsheet 3 Backsheet 4 Liquid-absorbent core 5 Main body 20 Annular member 21 Covering sheet 22 Recess

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display area A61F 5/44 D 7108-4C

Claims (2)

[Scope of utility model registration request] 1. A disposable diaper in which a liquid-absorbent core is interposed between a liquid-permeable topsheet and a liquid-impermeable backsheet, wherein a liquid-absorbent ring is formed around the central region of the crotch of the topsheet. By providing a member and a liquid-permeable cover sheet that covers the annular member except for the surface sheet portion that is surrounded by the inner peripheral edge of the annular member, the toilet seat in which the surface sheet portion is exposed at the bottom portion The diaper is characterized in that a concave portion is formed. 2. The diaper according to claim 1, wherein the annular member imparts a higher compression restoring property than the core and is integrally joined to the surface sheet and the covering sheet.