JP2607820Y2 - Disposable pants-type wearing article - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable pants-type wearing article, and more particularly to a disposable pants-type wearing article in which laterally opposed side portions of the disposable pants-type wearing article are intermittently joined.

[0002]

2. Description of the Related Art Generally, training pants and pants-type disposable diapers as disposable wear articles are laminated panels composed of a liquid-permeable inner sheet and a liquid-impermeable outer sheet, and in the case of a diaper, an absorbent sheet is absorbed between them. A laminated panel having a body interposed is used as a basic structure, and elastic stretchable members are attached to each of the waist and legs of the laminated panel in order to obtain a fit to the body while wearing and a function of preventing leakage of body fluid. There is. Further, in general, such an article is formed by folding the laminated panel in two so that the inner surface sheet is located inside and joining the opposite side portions of the front and rear waistline regions which are to be the waistline to form a pair with the body opening. And a leg opening of the.

[0003]

DISCLOSURE OF THE INVENTION In a disposable pants-type wearing article, the joining of the front waistline region and the back waistline region is performed by one or a plurality of continuous adhesive lines from the waist opening to the leg openings. There is. However, in such articles, if the excrement is excreted from the wearer, and it is pulled down to the wearer's toes when it is removed, if the excrement is stool, the stool will be excreted in the process of pulling it down. Occasionally, it often attaches to parts of the body that were not attached. In order to avoid such a situation, it is preferable to tear and detach the joined front waist region and rear waist region so as to separate them, as is already known.

As described above, in the conventional article, the joining is made by the continuous adhesive line, so that the tearing operation is not easy. Further, such a continuous adhesive line does not provide air permeability because the opposite side parts of the article are in a sealed state.

In the present invention, the fitting property of the article to the wearer's body is good, and the tearing operation of the opposite side portions of the article is easy, but the article is not torn carelessly during wearing. The subject is the joining configuration of the opposite side portions.

[0006]

An article according to the present invention for solving the above-mentioned problems includes a laminated panel comprising an inner sheet, an outer sheet and an absorbent body interposed therebetween, and the inner sheet There the laminated panel is folded so as to be positioned inwardly, laterally opposite sides of the front waistline region and the back waist region of the laminated panel is joined to outwardly butt-seamed respectively leaving their outer edges, first 1 For elastic member
Therefore, the elastically expanded body opening and the second elastic member
Therefore , in a disposable pants-type wearing article having elastically stretched leg openings, the second elastic stretchable member is
Each of the front and rear members is composed of a plurality of front members and rear members.
Crosses the crotch region of the laminated panel between the front and rear waist regions
In addition, the front members are arranged in parallel with each other to form the laminated panel.
Of the curved leg notches formed on both sides of the crotch region
Curved along the front half and fixed, the rear members are
In parallel with each other, bend along almost the latter half of the curved recess.
Fixed, and the front and rear waist regions between the waist opening elastically expanded and contracted by the first elastic expansion and contraction member and the leg openings elastically expanded and contracted by the second elastic expansion and contraction member are elastically expanded and contracted, The extension stresses of the trunk and leg openings are made stronger than the extension stresses of the front and rear waistline regions therebetween, and the joints of the laterally opposite side portions of the front and rear waistline regions extend in the longitudinal direction of the laterally opposite side portions. Is formed along a joint area having a predetermined width dimension, and the joint area is composed of a plurality of joint portions arranged in the longitudinal direction of the joint area at predetermined intervals, and the joint portion intersects the longitudinal direction of the joint area. It is characterized in that it has a height dimension that is long in the direction in which it is formed and that is smaller than the width dimension of the bonding area.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disposable diaper as an example of an embodiment of the present invention will be described with reference to the drawings.
It is as follows.

In FIG. 1, the diaper 1 includes a liquid-permeable inner sheet 2, a liquid-impermeable outer sheet 3, an absorber 4, a waist elastic elastic member 5, and leg elastic elastic members 6. . Gathers are elastically expanded / contracted by the elastic expansion / contraction members 5 and 6 at the peripheral edges of the body opening 7 and the leg openings 8. On the laterally opposite side portions 9 of the diaper 1, the respective side portions 10A and 11A of the front waistline region 10 and the rear waistline region 11 are provided.
Are integrally joined in the joining area 14.

In FIG. 2, the diaper 1 is an inner sheet 2
And the outer sheet 3 and the absorbent body 4 interposed therebetween.
It is composed of a laminated panel 1'formed by.
The inner surface sheet 2 is a non-woven fabric composed of thermo-crimped thermoplastic fibers, in which the fibers are entangled under the action of a high-pressure water stream, and has elastic stretchability. The absorber 4 is preferably made of a crushed pulp model containing a superabsorbent polymer mixed in an amount of 5 to 15% by weight. The outer sheet 3 has a two-layer structure,
Polyethylene and thermoplastic elastically stretchable liquid-impervious sheet 16 made of an elastomer, consists of heat crimped thermoplastic fibers, stretchable nonwoven fabric the fibers are entangled under the action of high-pressure water jet of the resilient and elastic members 17 is intermittently joined with a hot melt adhesive. The liquid-impervious sheet 16 faces the inner sheet 2 via the absorber 4, and the nonwoven fabric 17 serves as the outer surface of the diaper 1. Liquid-impervious sheet 1
6 is to impart liquid impermeability to the outer sheet 3 as a matter of course. Non-woven fabric 17, to have a cloth-like skin crunchy to the outer surface of the diaper 1. Further, the liquid impermeable sheet 16 and the non-woven fabric 17
By intermittently joining and with each other, the strength of the outer sheet 3 is improved without impairing the stretchability. Inner and outer sheets 2,
3 is elastically expanded and contracted so that the entire diaper 1, particularly the waist region thereof, fits the wearer. Outer sheet 3
On the liquid-impervious sheet 16, the elastic member 5 made of a plurality of thread rubbers and the elastic member 6 made of the front and rear members 6A, 6B made of a plurality of thread rubbers are stretched with a hot melt adhesive. It is glued. Therefore, as described above, the waistline region is elastically expanded and contracted, but the extensional stress caused thereby is strong in the torso and leg openings and weak in the waistline region between them. The front and rear members 6A, 6B cross the crotch region 15
At the same time, the front members 6A are arranged in parallel with each other in both the crotch regions
Curved along approximately the front half of the curved recessed portion 1A formed on the side
And the rear members 6B are arranged in parallel with each other to form the curved concave portion 1A.
Is curved along almost the latter half of the area, and is hardly stretched between the intersections intersecting each other in the crotch region 15 . In the continuous production line of the diaper 1, the elastic stretchable members 5 and 6 are continuously supplied along the flow direction and run across the width direction of the diaper 1, and both cutting edges thereof are laterally opposite side portions 9. In FIG. 3 (see FIG. 3), it faces the side edge of the outer sheet 3.

The inner surface sheet 2 and the outer surface sheet 3 have the same outer shape, extend outward from the outer periphery of the absorbent body 4, and are joined to each other at the extending portion. The laminate 1'is
The sheet is bisected in the longitudinal direction, folded so that the inner surface sheet 2 is on the inner side, and the laterally opposed side portions 10A and 11A of the front waistline region 10 and the rear waistline region 11 are overlapped with each other, leaving their outer edges. The body opening 7 and the pair of leg openings 8 are formed by integrally joining them along the joint area 14. In the diaper 1 configured in this manner, the rubber threads 5 and 6A on the front waistline area 10 side substantially overlap with the rubber threads 5 and 6B on the rear waistline area 11 respectively, and the waist opening portion 7 and the leg opening portion 8 respectively. Is substantially continuous in the circumferential direction.

In FIG. 3, the joining region 14 extends in the longitudinal direction of the side portion 9 from the body opening 7 to the leg opening 8 and is a joint in which the materials of the front and rear waist regions 10, 11 are fused by ultrasonic welding. The parts 14A and the non-bonding parts 14B are alternately repeated. Each of the joint portions 14A is long in the direction intersecting the longitudinal direction of the joint region 14, the width dimension of the diaper 1 in the lateral direction is about 5 mm, the height dimension of each joint portion 14A is about 1 mm, and the non-joint portion 14B. By setting the height dimension (the dimension between the two joint portions 14A adjacent to each other in the longitudinal direction of the joint area 14) of about 1.5 mm and arranging the joint portions 14A and the non-joint portions 14B alternately. An intermittent pattern is formed, and most of the joint area 14 is formed. As is clear from the drawing, the joint portion 14A is inclined near the leg elastic member 6. Further, the elastic expansion / contraction members 5 and 6 are located at the non-bonding portion 14B that does not act on the ultrasonic waves in the bonding area 14, and extend beyond the bonding area 14 to the outside.
It In this way, the elastic expansion / contraction members 5 and 6 are outside the joint area 14.
By extending over to the side, the diaper 1 spreads when worn
In the case of
There is a risk that the joint area 14 will be pulled inward due to the contraction force).
Less is. In addition, if the non-joined portions 14E and 14E ', which are relatively larger than the non-joined portion 14B, are provided at the upper end portion and / or the lower end portion of the joined area 14 and the portions are gripped, the front waistline region is particularly easy. The rear waistline region can be torn along the joint region 14.

The joining portion 14A has the above-described dimensions as an optimum example, but the length dimension in the lateral direction of the diaper 1 (joining region 14).
Width dimension) of 2 to 20 mm and height dimension of 0.5 to 1
The total occupied area in the joint area 14 from the trunk opening 7 to the leg opening 8 can be 40 to 80%. When the occupying area of the joint portion 14A is 40% or less, the strength of the joint area 14 may be insufficient.
If it is 0% or more, the desired air permeability may not be obtained through the non-bonding portion 14B.

When the pants-type diaper 1 can be detached from the wearer, the front waistline region 10 and the rear waistline region 11 are respectively gripped at the outer edge of the side portion 9 and pulled in the front-rear direction where they are opposed to each other. It can be easily torn along the zone 14. Moreover, the resistance to tearing at this time is that the joint portion 14A having at least the same width dimension as the joint area 14 intersects the longitudinal direction of the joint area 14, and the non-joint portion 14B is located between them. Due to the intermittent pattern, the user feels as if he / she operates a zipper, and even if a tear occurs at the upper end or the lower end of the joining area 14, the tearing force is hardly transmitted continuously.

In FIG. 4, in order to facilitate grasping of the front waistline region 10 and the rear waistline region 11, each side portion 10 is provided.
The upper end portions of A and 11A are provided with gripping portions 20A and 20B extending outward from the side portions. Grasping parts 20A, 20B
Can be provided so as to be integrated with the inner surface sheet 2 and / or the outer surface sheet 3, but it can also be provided as a separate member.

In FIG. 5, the inner sheet 2 is composed of a thermoplastic fiber which is heat-crimped in the same manner as in the above embodiment, and is constituted by an elastic stretchable sheet which is a non-woven fabric in which the fibers are entangled under the action of a high-pressure water stream. The sheet 3 is composed of a single layer of an elastically stretchable liquid-impervious sheet 16 made of the illustrated thermoplastic polyethylene elastomer. With this configuration, the manufacturing cost can be reduced more than that in the case of the above-mentioned embodiment.

[0016]

The article according to the present invention has the following effects.

When detaching the worn articles, by pulling at least one of the laterally opposite side portions of the front and rear waist regions in a direction away from each other, they can be easily torn along the joint region, and the detaching operation can also be performed. In addition, it is easy and, because a large number of joint portions forming the joint area extend in a direction intersecting the longitudinal direction of the joint area, that is, intersect at least the width dimension of the joint area with the longitudinal direction of the joint area. Since it has a length, the required joining strength or tear resistance is imparted to the joining area, and the worn article is prevented from being torn accidentally continuously during wear and slipping off from the body.

Not only the torso and leg openings but also the waist area between them is elastically expanded and contracted, and the tensile stress of the torso and leg openings is made stronger than that of the waist area between them, so that the diaper is It fits well around the wearer's torso and does not slip or fall off even when the wearer exercises relatively hard.

[Brief description of drawings]

FIG. 1 is a perspective view of a diaper according to the present invention.

2 is an exploded perspective view of the diaper of FIG.

FIG. 3 is a partially enlarged view of the diaper of FIG.

FIG. 4 is a partially enlarged perspective view showing another embodiment of the present invention.

FIG. 5 is a perspective view of an outer sheet showing another embodiment of the outer sheet.

[Explanation of symbols]

1 diaper 2 Inner sheet 3 outer sheet 4 absorber 5,6 Elastic expansion and contraction member6A front member 6B Rear member 9 laterally opposite sides 10 front waist area 11 Rear waist area 14 junction 14A junction 14B Non-bonded part 16 Elastic expansion and contraction member

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hirofumi Onishi               2605-1 Nakasone Town, Iyo Mishima City, Ehime Prefecture (72) Creator Toru Sasaki               385-1 Handaoto, Kaneda Town, Kawanoe City, Ehime Prefecture                (56) References JP-A-62-243806 (JP, A)                 JP-A-61-207605 (JP, A)                 JP-A-57-117602 (JP, A)                 JP-A-51-72679 (JP, A)                 JP-A-58-23911 (JP, A)                 JP-A-60-259606 (JP, A)                 Japanese Patent Publication Sho 49-23026 (JP, B1)                 Japanese Patent Publication Sho 47-51210 (JP, B1)                 Special Table 1-503473 (JP, A)                 Special table Sho 64-500205 (JP, A)                 Patent Office Gazette 53-219 "well-known and commonly used technology"               Collection (packaging industry) "February 20, 1978 departure               Row, page 43

Claims (4)

(57) [Scope of utility model registration request] 1. An inner sheet, an outer sheet, and between them
The inner surface including a laminated panel comprising an interposing absorber
The laminated panels are folded so that the sheets are located inside.
Healed, beside the front waist area and rear waist area of the laminated panel
Direction facing sides each outward leaving their outer edges
Jointed like a chisel,By the first elastic stretchable memberElastic expansion and contraction
With a simplified torso openingBy the second elastic stretchable memberElastic expansion and contraction
Disposable pants-type wearing article having an integrated leg opening
AtEach of the second elastic elastic members includes a plurality of front members and a plurality of rear members.
Front and rear members between the front and rear waist regions.
While crossing the crotch region of the laminated panel, the front member is
Formed parallel to each other on both sides of the crotch region of the laminated panel
Curved and fixed along the front half of the curved leg recess
And the rear members are juxtaposed to each other to form the curved recess.
Curved and fixed along almost the second half of the section, By the first elastic elastic member Elastically stretched body opening
Department andBy the second elastic elastic memberElasticated legs
The front and rear waist regions between the opening are elastically stretched,
The extension stress of the body and leg openings is
It is made stronger than the stretching stress in the surrounding area, The laterally opposed side portions of the front and rear waist regions are joined in the lateral direction.
Joining having a predetermined width dimension that extends in the longitudinal direction on opposite sides
Is made along the zone, and the joint zone is in the longitudinal direction of the joint zone.
It consists of a number of joints arranged at predetermined intervals,
The joint portion is long in the direction intersecting the longitudinal direction of the joint area,
And has a height dimension smaller than the width dimension of the joint area.
The above-mentioned article. 2. The article according to claim 1, wherein the joint region has a width dimension of 2 to 20 mm and the joint portion has a height dimension of 0.5 to 15 mm. 3. The article of claim 1 or 2 the sum of the occupied area of the joint over the leg openings from the barrel opening 40 to 80%. 4. The first and second elastic expansion / contraction members are bonded to each other.
4. The method according to claim 1, 2 or 3 which extends beyond the region to the outside.
Goods.