JPH1199172A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means which can be used even for an opening type disposable diaper and even for a pants type disposable diaper and can round a used diaper. SOLUTION: Two-strip parallel first and second cutting/tearing guide lines 21 and 22 extending below a girth area 7 from a girth edge 7A and a single strip third cutting/tearing guide line 23 extending in the girth direction by crossing these guide lines 21 and 22, are formed in a disposable diaper having an elastic member 19 extending in the girth direction in the vicinity of the girth edge 7A. The first and second guide lines 21 and 22 extend downward by going over the elastic member 19, and the third guide line 23 is positioned below the elastic member 19.

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 diaper having a means that can be rolled up after use.

[0002]

2. Description of the Related Art An opening around a waist of a pants-type disposable diaper disclosed in Japanese Utility Model Laid-Open Publication No. 5-51327 is formed such that a portion below a waist elastic member is easily torn in a circumferential direction. When the diaper is cut, an annular band can be obtained. This band includes a waist elastic member and has elasticity, and can be used as a means for rolling a diaper after use. Such a diaper does not require, as the above-mentioned means, a special means used only for rolling, so that an increase in manufacturing cost can be suppressed accordingly. If the diaper is rolled up, it is easy to handle and sanitary because no filth is exposed.

[0003]

The diapers of the above-mentioned prior art are easy to be torn when discarded, but must not be torn when being worn. It is difficult to balance the tear strength.

[0004] Even if the balance can be adjusted well, it is difficult to apply this technique to an open type diaper. The strip obtained by cutting the circumference of the open diaper is straight, not annular. When the band is wound around a rolled diaper, it must be tied, which is more time consuming than an annular band.

Accordingly, an object of the present invention is to provide means for rolling a diaper, which can be applied to both pants-type diapers and open-type diapers.

[0006]

In order to solve the above problems, the present invention is based on the premise that a liquid permeable surface sheet is
A liquid-impervious back sheet, comprising a liquid-absorbent core interposed between these two sheets, the front and rear longitudinal direction and the front waist area,
An elastic member, which is constituted by a rear waist region and a crotch region located between these two regions and extends in the waist direction near at least one edge of the front and rear waist regions, is attached in an extended state. It is a disposable diaper.

[0007] On this premise, the present invention is characterized in that the diaper starts at an edge of the waist region at the waist region to which the elastic member is attached, and moves downward from the waist region. It has two extending first and second guide lines parallel to each other and one third guide line extending in the waist direction and intersecting with each of the first and second guide lines, and constitutes the waist region. The sheet material is formed more easily at the first to third guide lines than at the periphery of these guide lines, and the first and second guide lines move downward beyond the waist elastic member. Extending, and the third guide line is
It is located below the waist elastic member.

[0008]

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.

FIG. 1 is a partially cutaway perspective view of a pants-type diaper, which is an example of a disposable diaper. The diaper has a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and a liquid-absorbent core 4, and its longitudinal direction is a front waist region 6, a rear waist region 7, And a crotch region 8 located between the two regions. The front and back sheets 2 and 3 overlap at a portion extending from the periphery of the core 4 and are joined to each other via a hot melt adhesive (not shown). Front and rear waist area 6,7
, The side edges 11 and 12 overlap each other in a palm-shape manner and are joined at a portion 13 intermittently arranged in the vertical direction of the diaper to form a waist opening 16 and a pair of leg openings 17. . A plurality of thread rubbers 18, 19 extending in a circumferentially extending state are attached to the front and rear waist regions 6, 7 as waist elastic members. A plurality of thread rubbers 31 extending in a circumferentially extending state are attached to the periphery of the leg opening 17.

At the center in the circumferential direction of the rear waist region 7, the first and second splitting guide lines 21, which are parallel to each other and have the same length, starting from the opening edge 7 A and extending downward toward the crotch region 8.
22 are formed. The first and second guide lines 21 and 22
It extends beyond the thread rubber 19 in the rear waist region 7 and below the thread rubber 19. A third severing guide line 23 extending in the waist direction is formed between the lower ends of the first and second guide lines. These first to third guide lines 21 to 2
An example of the line 3 is a line formed of perforations passing through the front and back sheets 2 and 3, and the perforations are arranged avoiding the thread rubber 19 so as not to hinder the elasticity of the thread rubber 19. Has been established.

FIGS. 2 and 3 are cross-sectional views taken along line II-II and line III-III of FIG. 1, respectively. In FIG. 2, the thread rubber 19 is in the tubular portion 26 formed by the front and back sheets 2 and 3, and is freely stretchable without joining to the tube wall. The front and back sheets 2 and 3 are joined via a hot melt adhesive 27 at the top and bottom of the tubular portion 26. In FIG. 3, one of the thread rubbers 19 is a tubular portion 28,
29, the front and back sheets 2 and 3 are joined at the top and bottom of the respective tubular portions 28 and 29.
The thread rubber 19 is not joined to the tube walls of the tubular portions 28 and 29 and is in a freely stretchable state.
It is also possible to join to the tube wall. In addition, the annular portion 28,
29 may be an annular portion 26 as shown in FIG. Both ends (not shown) of the thread rubber 19 that expands and contracts inside the tubular portions 26, 28, 29 are joined to at least one inner surface of the front and back sheets 2, 3 at the side edge 12 of the rear waistline region 7. ing.

The thread rubber 18 in the front waist area 6 and the thread rubber 31 in the leg opening are located between the front and back sheets 2 and 3.
These sheets 2 and 3 are joined to at least one inner surface. However, the thread rubber 18 is the thread rubber 1 in the rear waist area 7.
As in the case of No. 9, only both ends of the rubber may be bonded to at least one of the front and back sheets 2 and 3.

4 and 5 show a diaper with first to third guide lines 21. FIG.
23 is a partial perspective view when the sheet piece 20 at the central portion of the rear waistline region 7 surrounded by the guide lines 21 to 23 is pinched, and the thread rubber 19 is pulled above the diaper. FIG. 2 is a perspective view of a diaper that is rolled using thread rubber 19. Since the rubber thread 19 is fixed only at both ends, it is easy to pull out the rubber thread 19 having a length sufficient to be wound around the rolled diaper from the tubular portion 26.

FIG. 6 is a plan view of an open diaper showing an embodiment of the present invention. In the rear waist area 7 of the diaper, a thread rubber 19 is provided between the side edges 12 along the edge 7A.
Is extending. First to third tearing guide lines 21 to 23 are formed in the widthwise central portion of the rear waist region 7, and the sheet piece 20 of the central portion is removed from the rear waist region 7 similarly to the diaper of FIG. 1. By cutting out, the thread rubber 19 can be pulled out and wound around a rolled diaper. Also in this embodiment, since the rubber thread 19 has both ends fixed to the side edges 12, the thread rubber 19 can be wound around a rounded diaper without the trouble of binding the rubber. A tape fastener 31 that is detachable from the front waist region 6 is attached to the side edge 12 of the rear waist region 7 of the diaper.

In order to carry out the present invention, the first to third severing guide lines 21 to 23 formed in the rear waistline region 7 in the illustrated example may be formed in the front waistline region 6.
However, it is preferable that the thread rubber 18 in the front waistline region 6 at that time is attached similarly to the thread rubber 19. Further, each of the plurality of thread rubbers 18 and 19 can be replaced with one thread rubber or another elastic member.

[0016]

In the disposable diaper according to the present invention, as a means for rolling the diaper, a waist elastic member having only both ends fixed is used, and this elastic member cuts the waist region relatively small. Can be pulled out of the diaper. Such means does not substantially reduce the strength of the diaper. This means can be used for both open-type diapers and pants-type diapers.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a pants-type diaper.

FIG. 2 is a sectional view taken along the line II-II of FIG. 1;

FIG. 3 is a view showing a cross section taken along line III-III of FIG. 1;

FIG. 4 is a partial view of the diaper when it is cut.

FIG. 5 is a perspective view of a rolled diaper.

FIG. 6 is a plan view of an open diaper.

[Explanation of symbols]

 2 Top sheet 3 Back sheet 4 Core 6 Front waist area 7 Rear waist area 7A Edge 8 Inseam area 11,12 Side edge 19 Elastic member 21,22,23 Guide line

Claims (1)

[Claims] 1. A liquid-permeable top sheet, a liquid-impervious back sheet, and a liquid-absorbent core interposed between these two sheets. The front and rear longitudinal directions are a front waist area and a rear waist area. And a crotch region located between the two regions, and an elastic member extending in a waist direction near at least one edge of the front and rear waist regions is attached in an extended state. A first and second parallel first and second guide lines extending from the edge of the waist region to the waist region to which the elastic member is attached, and extending downward from the waist region; And a single third guide line intersecting with each of the first and second guide lines, and the sheet material forming the waist region is formed by the first to third guide lines. It is easier to tear than around the line, The diaper 2 guide lines extends downwardly beyond said waist elastic member, said third guide line, characterized in that it is located below the waist elastic member.