JPS62243806A - Disposable absorbing panty - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to disposable absorbent pants formed in advance into a complete pant shape for use as diapers for infants, so-called training pants, diapers for incontinent persons, etc. Regarding.

(Prior Art) Disposable absorbent pants that are previously formed into a complete pants shape and have elastic members in a waistband and a pair of leg holes are disclosed in Japanese Patent Laid-Open No. 11507/1983.

(Problems to be Solved by the Invention) According to the pants of the known art, there is a gap between the horizontally rectangular water-permeable top sheet and the same-shaped water-impermeable back sheet, which are sized to form the front body and the back body. , respective absorbent cores for the front body and the back body are interposed with a space in the central region between these lateral opposite ends, an elastic member for the waistband is provided at the upper end of the backsheet, and an elastic member for the leg hole is provided at the lower end of the backsheet. The elastic members are adhered to each other to form the pants body.

The pants body is folded back around the space,
The front body and the back body are joined at the opposite edge of the folding space, and the front body and the back body are joined at the lower end between the side edge and the other side edge which is the folding space. By the way.

It is formed into pants d. However, in this known pant, the elastic member is interposed between the top sheet and the back sheet with its length being almost the same as or slightly longer than the width of the core. Because it's being done.

The elastic member, especially the leg hole, which is important in preventing the leakage of excrement from the crotch.

Due to the rigidity of the core, there are almost no parts that can function without hindering its elasticity, so the sealing properties of the leg holes are poor and excrement easily leaks, and no special consideration has been given to the welding. Therefore, the welded part, which is harder than other parts, comes into contact with the wearer's body, causing pain and damage.

Therefore, an object of the present invention is to provide disposable absorbent pants that can solve the above-mentioned problems by extremely simple means.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a water-permeable top sheet that comes into contact with the wearer's skin, an impermeable back sheet that is located on the opposite side of the top sheet, and Disposable absorbent pants including a pants main body consisting of an absorbent core interposed between sheets, and elastic members forming elastic gears in a waistband and a pair of leg holes, respectively,
The pant body is folded back in the vertical direction with the top sheet touching each other through a horizontal center line that longitudinally divides the pant body, and is folded back in a continuous line at horizontally opposite side edges of the front body and the back body. The pants are pressure-welded, and at least those of the leg holes of the stretchable members extend 10 to 130 inches outward from the outer edge of the core.

In a particularly preferred embodiment, the pressure welding is performed leaving the outer edge intact, and grooves are formed on the weld line, and the pants body is continuous in the vertical direction without any seams, and The back body is formed wider than the front body, and the leg holes are formed by recessed notches provided on laterally opposite side edges of the crotch area of the pants body.

(Example) Further, the pants according to the present invention will be described below based on the illustrated example.

In FIGS. 1 to 3, the pants body 1 includes a water-permeable top sheet 2, an impermeable back sheet 3 of the same size,
The absorbent core 4 is smaller than both sheets. Further, the pants body has elastic members 5a, 5b that create gears in the waistband, and elastic members 6a, 6b that create gears in the leg holes.

The top sheet 2 is a nonwoven fabric containing at least heat-fusible fibers, the backsheet 3 is a plastic film or a laminate sheet of the film and nonwoven fabric, and the core 4 is a flap valve or a mixture of the pulp and superabsorbent polymer particles. A mat-like body and water-permeable sheets placed on its upper and lower surfaces are used. Expandable members 5a, 5b, 6a
, 6b is made of urethane foam having a relatively wide width, for example, 10 to 45 cm, or a plastic film that becomes stretchable through heat treatment. Between the vertically opposing ends of the top sheet 2 and back sheet 3 in the front body 7 and back body 8, that is, the waistbands 10a and 10b.
Expandable members 5a and 5b are interposed and bonded therein.

In order to achieve the intended purpose of the present invention, it is necessary to
, 5b, 6a, 6b, especially 6a, 6b, are 1 outward from the side edge of the core 4 in the front body 7 and the back body 8.
It is necessary that it extends from 0 to 130 m, preferably from 30 to 11 OIII, more preferably from 50 to 95 mm. Its extended length is indicated by L, and L is the core 4
It shows the length of the interval between the side edge of and the inner edge of the welding groove groove 14 described later.

Top sheet 2 and back sea 1-3 in inseam area 9
In order to form a leg hole 11, a semi-elliptical recessed part 12 is provided on the opposite side in the lateral direction, which is deviated toward the front body 8 side from the lateral center line It is provided. therefore.

The pants body 1 has a back body 8 wider than a front body 7. Stretchable members 6a and 6b extending laterally in parallel with the stretchable members 5a and 5b are interposed and bonded between vertically opposing ends of the recessed portions 12 of the front body 7 and the back body 8.

A V-shaped concave notch 13 is provided on the opposite side edges of the front body 7 and the back body 8 in order to improve the fit by narrowing their central portions. The recessed part 13 may be formed in a curved line. A core 4, which is narrower in the crotch region 9 and wider in the rear body region 8 than in the front body region 7, is adhered relatively immovably to the central region of the top sheet 2 and the back sheet 3. Top Seat 1-2 and Back Seat 3
, and the elastic members 5a, 5b, 6a, 6b for the top sheet 2 and/or back sheet 3.

The core 4 is bonded to the top sheet 2 and/or the back sheet 3 using a hot melt adhesive or thermal welding.

4 and 5 show other embodiments of the pants body 1. FIG. This pants body 1 is substantially the same as that of the previous embodiment, but a plurality of thread-like rubber threads are used as the elastic members 6a and 6b, and furthermore, on the inside of the recessed part 12 in the vertical direction, the parts are arranged vertically in parallel with each other. Expandable members 6a, 6 extending in the direction
An elastic member 6c made of a relatively wide urethane foam, for example, 10 to 45 square meters, or a plastic film that develops elasticity through heat treatment is bonded to the elastic member 6c.

As shown in FIGS. 1, 3, and 5, the pants body 1 is oriented vertically so that the top sheet 2 is on the inside through the horizontal center line X (see FIGS. 2 and 4). The front body 7 and the back body 8 are folded back and joined by welding into a continuous line under pressure along the opposite side edges, leaving an appropriate width W, preferably 10 cm or less, at the outer edges. As shown in Figure 6.

A concave groove 14 is formed on the joining line by pressure welding. In addition, in order to further improve the weldability, a plastic sheet with a lower melting point than those is placed between the top sheet 2 and the back sheet 3 at the joint portion or between the top sheets 2 that are in contact with each other. Intervention may be required.

(Effects of the Invention) The pants according to the present invention configured as described above are formed into a complete pants shape.

Compared to traditional disposable diapers that are assembled when worn,
Extremely Good Wearing Appearance 1 The pants fit well to the wearer's body, and are therefore particularly suitable as so-called training pants for infants and pants for the elderly and incontinent.

In particular, according to one aspect of the pants according to the present invention, the elastic member of the leg hole extends a predetermined length outward from the opposite side edge of the core, which is more rigid than the top sheet or back sheet due to its constituent material and thickness. Therefore, the elasticity of the extending elastic member portion is less likely to be inhibited by the rigidity of the core.

Therefore, the sealing properties of the leg holes against the wearer's legs are improved, and excrement is less likely to leak from the leg holes.

Furthermore, in the embodiment, the welded part that joins the front body and the back body is made by leaving their outer edges and is formed into a groove, so that the part that is hardened by the welding is The pants are less likely to cause pain or damage when coming into contact with the wearer's skin, and the pants are seamlessly continuous in the vertical direction, with the back section being wider than the front section.

Moreover, since the leg hole is formed by a concave cutout provided on the side opposite to the crotch area in the lateral direction, joining the leg hole in the crotch area may give the wearer a stiff and uncomfortable feeling, or the leg hole may break at the joint and be excreted. Things do not leak, and the fit for the wearer is further improved.

[Brief explanation of drawings]

The drawings show an embodiment of the pants according to the present invention,
Figure 1 is an assembled perspective view, Figure 2 is a partially cutaway exploded plan view, Figure 3 is an assembled plan view extended laterally, Figures 4 and 5 are the same as Figures 2 and 3. FIG. 6 is a diagram showing other embodiments corresponding to each other, and FIG.
FIG. 3 is an enlarged sectional view taken along the Y line. l...pants body, 2...top sheet, 3...
Back sheet, 4... Core, 5a, 5b, 6a, 6
b, 6cm elastic member, 7...front body, 8...back body, 9...crotch area. 10a, 10b... Waistband, 11... Leg hole, 12... Concave notch, 14... Welding circulation groove.

Claims (5)

[Claims] (1) A pants body consisting of a water-permeable top sheet in contact with the wearer's skin, a water-impermeable back sheet located on the opposite side of the top sheet, and an absorbent core interposed between the two sheets, a waistband, and a pair of pants. and an elastic member that creates elastic gathers in each of the leg holes of the disposable absorbent pants. in this state, the front body and the back body are pressure welded to a continuous wire at the opposite lateral edges of the front body and the back body, and at least that of the leg hole of the elastic member is 10 to 130 mm outward from the outer edge of the core. The pants are characterized in that they extend. (2) The pants according to claim 1, wherein the pressure welding is performed leaving the outer edge intact, and a groove is formed on the weld line. (3) The pants according to claim 1, wherein the pants main body is continuous without a seam in the vertical direction. (4) The pants according to claim 1, wherein the back body of the pants body is wider than the front body. (5) The pants according to claim 1, wherein the pants main body has a concave notch forming the leg hole on a side laterally opposite to the crotch region in the unfolded state.