JP2563353Y2 - Paper 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 having a barrier cuff with a mountain cross section in use.

[0002]

2. Description of the Related Art There has been a remarkable improvement in disposable diapers in recent years, and a typical example of such improvement is to form barrier cuffs on both sides of the disposable diaper, thereby preventing the lateral leakage of loose stools.

For example, Japanese Patent Application Laid-Open No. 62-250201 discloses that
A structure in which one barrier sheet is fixed to the flap portion to be a proximal end, and a structure in which an elastic elastic member is provided at a free distal end, and as a modification thereof, a top sheet is extended and It also discloses a structure in which the barrier cuff is folded upright to form a barrier cuff, and a side edge of the folded portion is a distal end, and a raised portion is a proximal end. Although there are many other proposals, there are many variations based on the above publication technology.

[0004]

However, in the disposable diaper described in the above-mentioned publication, the barrier cuff that rises inwardly and inclines when used is likely to fall down, so that the leg circumference and the free side edge of the barrier cuff are used. Are often separated from each other, and as a result, loose stool or urine passes over the separated portion, causing side leakage.

Further, the publication discloses that forming a pocket space or channel between the proximal end of the barrier cuff and the side edge portion of the absorber is effective in preventing loose stool. However, according to the findings of the present inventors,
Its effectiveness could not be confirmed.

Accordingly, the present inventor has disclosed a disposable diaper having a barrier cuff having a cross section with a mountain shape in Japanese Patent Application No. Hei.
No. 4748. However, in use, when it comes into contact with the circumference of the leg, it is compressed by the leg and the cross section of the barrier cuff is transformed into the intended relatively sharp chevron, and loose stools and urine lie down. It was found that it was prone to leaks.

[0007] Therefore, an object of the present invention is to prevent loose stools and urine from leaking sideways more reliably, and to provide a sense of security as a sharp wall shape that is inclined inward from the viewpoint of appearance.

[0008]

The object of the present invention is to provide a liquid absorbent sheet and a liquid permeable sheet which cover an absorbent body and project on both sides to a use surface side, and the elastic elastic member for projection is provided. In a disposable diaper having a provided barrier cuff and a flap formed outside a side edge of the absorber, each of the barrier cuffs is formed of a water-repellent or water-impermeable barrier sheet, and the barrier sheet is formed of Folded into a double sheet, the inner part of the barrier sheet is fixed to the liquid-permeable sheet with an inner erect line at least at the leg part, and the outer part of the barrier sheet is at least at the flap part around the leg. An outer rising line is fixed to the liquid-impermeable sheet or the extending liquid-permeable sheet, and a barrier is provided in the widthwise middle between the inner rising line and the outer rising line. It can be solved by being fixed to each other with one or more orthopedic fixation line extending in the longitudinal direction in the inner and outer portions and at least leg portions of the sheet. Also, the elastic elastic member is disposed in a double portion of the barrier sheet, and is fixed to the barrier sheet only at both ends in the longitudinal direction, and the barrier sheet is fixed to the disposable diaper body in an inwardly lying state. Can be. Further, the elastic elastic member fixes the barrier sheet only at both longitudinal end portions at a widthwise intermediate portion in the double portion of the barrier sheet, and fixes the barrier sheet to the inside of the disposable diaper body in a folded state. This is also a preferred embodiment.

[0009]

[Function] The barrier cuff of the disposable diaper according to the present invention is 2
Since it is formed of a heavy barrier sheet, the effect of preventing lateral leakage of urine is high. Further, since the inner portion and the outer portion of the barrier sheet are fixed to each other with at least one shaping fixing line extending in the longitudinal direction at least in the leg surrounding portion, the shape retention of the barrier cuff B is improved, and Urine can be prevented from spreading from the liquid-permeable sheet.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to FIGS. In the disposable diaper according to the present invention,
Between the liquid-impermeable sheet 1 made of polyethylene or the like and the liquid-permeable sheet 2 made of non-woven fabric or the like, an absorber 3 made of cotton-like pulp or the like, for example, rectangular or preferably having some rigidity as shown in the figure is interposed. Have been. Absorber 3
Can be wrapped with absorbent paper (not shown) to maintain its shape. The liquid impermeable sheet 1 extends outward from the periphery of the absorber 3 and has an hourglass shape. The laterally extending portion of the liquid-impermeable sheet 1 constitutes a flap F together with a later-described barrier sheet 4 and side portions of the liquid-permeable sheet 2. The liquid-permeable sheet 2 has a rectangular shape, and extends slightly outward from the side edge of the absorber 3 in the leg area.
And a hot melt adhesive or the like. The longitudinal edge coincides with the diaper.

On both sides of the paper diaper, barrier cuffs B, B projecting toward the use surface side are formed, and the barrier cuffs B are joined to a barrier sheet 4 substantially continuous in the width direction as shown in FIG. It is constituted by the elastic elastic member 5 or, if necessary, a plurality of elastic elastic members. further,
The barrier cuffs B are formed by folding the barrier sheet 4 inward to 2
In the double part of the barrier sheet 4 having two proximal ends, an inner upright 51 and an outer upright 52 and one free distal end 60, which are formed in two layers and are restrained by the diaper body. The elastic member 5 is disposed on the outer side, the outer rising line 52 is located on the flap F, and the inner rising line 51 is located inside the side edge of the absorber 3.

More specifically, the barrier sheet 4
Are fixed to the liquid-impermeable sheet 1 with, for example, four elastic elastic members 7 for gasket cuffs with a hot-melt adhesive (indicated by a cross in the drawing) or the like. The portion is fixed to the liquid-permeable sheet 2 at a position slightly inside the side edge of the absorber 3 with a hot-melt adhesive or the like, and further, as clearly shown in FIG. On the way, the inner portion and the outer portion are fixed to each other by a fixing wire 53 for shaping using a hot melt adhesive.

Further, an elastic elastic member 5 is disposed between the shaping fixing line and the above-mentioned distal end 60, and both ends of the elastic elastic member 5 are made of a hot melt adhesive as shown by hatching in FIG. 4 is fixed. But,
Except for the fixed portions at both ends, the leg circumference is free. Further, in the embodiment, the fixed position of the elastic elastic member 5 is set to the middle in the width direction of the double portion of the barrier sheet 4.

The front and rear ends of the double portion of the barrier sheet 4 are fixed to the upper surface of the liquid-permeable sheet 2 with a hot-melt adhesive or the like at the portion indicated by hatching in FIG. , Is restrained against the diaper body. Therefore, the middle part in the longitudinal direction of the double part of the barrier sheet 4 excluding the constrained part is free. 2 and as shown by the solid line in FIG.

By this standing, the barrier cuff B is generated. 6 is a fastening tape.

The barrier cuffs B, B contact the leg circumference L of the wearer, and the space surrounded by the barrier cuffs B, B and the liquid-permeable sheet 2 is a substantially trapezoidal space that is open upward. Creates a containment space for urine or loose stool. When urine is discharged into this space, the urine is absorbed into the absorbent body 3 through the liquid-permeable sheet 1 and the barrier cuffs B, B become (barrier) barriers for loose stool solids. Getting over is prevented. In the unlikely event that the urine leaks sideways over the upright side edges of the barrier cuffs B, B, the gasket cuffs by the elastic elastic members 7 prevent lateral leakage.

On the other hand, the barrier cuff B according to the present invention is:
As shown in FIG. 2, in the upright state, the front and rear ends of the double portion of the barrier sheet 4 are transparent at the portions indicated by hatching in FIG. The outer wall B1 and the inner wall B2 of the barrier cuff B are fixed to the upper surface of the liquid sheet 2 and restrained against the main body of the disposable diaper. It does not warp and has good barrier properties.

In the present invention, as shown in FIG. 3, the side edge of the liquid-permeable sheet 2 is fixed to the liquid-permeable sheet 1 and the barrier sheet 4 in the vicinity of the outer rising line 52. It extends to a position slightly closer to the inside, and its lower surface is fixed to the liquid impermeable sheet 1. The skirt portion of the barrier cuff B (or the barrier sheet 4) extending outward from the outer wall B 1 of the barrier cuff B with the outer rising line 52 as a boundary with respect to the liquid-impermeable sheet 1,
Are fixed to each other by a hot melt adhesive while being interposed in the middle.

In the disposable diaper thus constructed, in addition to the effect of preventing the barrier cuffs from curling outward, firstly, the side surface of the absorber 3 is wrapped by the liquid-permeable sheet 2. Secondly, when the urine absorbed in the liquid-permeable sheet 2 diffuses in the width direction, the liquid-permeable sheet 2 has a wide width, so that the diffusion-absorbing ability is enhanced. Thirdly, the urine flowing out of the absorber 3 is absorbed by the liquid-permeable sheet 2 extending below the rising portion of the barrier cuff B, so that the diffusion in the longitudinal direction is prevented and the longitudinal leakage is prevented. 4, since the side edge of the liquid-permeable sheet 2 does not extend outwardly from the outer rising line 52 of the barrier cuff B, the urine does not further diffuse in the lateral direction, thereby preventing lateral leakage of the urine. Has the effect.

On the other hand, in the present invention, the inner portion and the outer portion of the barrier sheet 4 are fixed to each other by a shaping fixing line 53 made of a hot melt adhesive in the middle of the double portion. Therefore, as shown in FIG. 3, the shape of the barrier cuff B is a thin wall that is inclined obliquely inward as compared with the case where the mountain-shaped barrier cuff B is simply formed by the inner rising line 51 and the outer rising line 52. In addition to providing the buyer with a sense of security indicating barrier properties, the diffusion of urine transmitted through the liquid-permeable sheet 2 is transmitted to the barrier sheet 4 by a shaping fixed line. Blocked at 53, diffusion to the edge of the barrier cuff B is prevented, and wetting to the skin is prevented.

By the way, it is conceivable that the barrier cuff B is formed of one sheet, but in this case,
The barrier cuffs B become flaky, resulting in poor shape retention. Moreover, even if the barrier sheet 4 is formed of a water-repellent material, there is a high risk that urine will permeate or seep out. Therefore, in order to solve these problems, a double cuff is required according to the present invention.

The elastic elastic member 5 can be fixed to the barrier sheet 4 at the distal end 60 of the leg portion also by a hot melt adhesive. However, it is preferable that the leg portion is not fixed, that is, a so-called floating cuff state is provided, in order to prevent skin irritation by the fixing hot melt adhesive. Further, the elastic elastic member 5 is fixed at the middle in the width direction of the double part without being located at the distal end as in the above-described embodiment, that is, when the elastic member 5 is fixed at the middle in the width direction between the inner wall B2 and the outer wall B1, As shown in FIG. 3, when the wearer's leg circumference L abuts, the distal end of the barrier sheet B is freely deformed as shown by the imaginary line because the elastic elastic member 5 is not present, so that the touch is felt. Excellent in terms of. Further, since the deformed portion comes into contact with the leg by the surface, the leakage prevention effect is higher than that in a case where the elastic portion is provided at the distal end and the leg is brought into contact with the leg.

In the present invention, the barrier sheet is preferable because it is impermeable but not liquid-permeable. Also,
The liquid-permeable sheet may be made water-repellent by silicon treatment or the like. Further, in the above embodiment, the skirt of the barrier sheet 4 is fixed to the liquid-impermeable sheet 1,
The liquid-permeable sheet 1 can be extended to or near the side edge of the disposable diaper and fixed to the liquid-permeable sheet 1. The fixing wire 53 for shaping may be not a single wire but a plurality of wires or a wide band.

Reference numeral 9 denotes a shape-maintaining elastic expansion / contraction member used for molding the absorber 3 into a boat shape. When the elastic expansion / contraction member 9 is provided, the absorber 3 having a certain degree of rigidity can be used in a disposable diaper. And can be held in a shape that fits the body of the wearer. In this case, in order for the contracting force of the elastic expandable member 9 to act on the absorber 3, it is important that the elastic expandable member 9 is close to the side surface of the absorber 3; According to the embodiment of the invention, the structure for fixing the liquid-permeable sheet 2 to the liquid-impermeable sheet 1 at a portion below the barrier cuff B is as follows.
This is effective for fixing the elastic elastic member 9 close to the side surface of the absorber 3. Further, in the present invention, the reference symbol S shown in FIG. 3, that is, the separation distance S between the side surface of the absorber 3 and the fixing start position of the liquid-permeable sheet 2 to the liquid-impermeable sheet 1 is 10 mm or less, particularly 5 mm or less. It is desirable. Elastic expansion / contraction member 9 (when there are a plurality of members, the closest member)
The distance (in the width direction) between the absorber 3 and the absorber 3 is 19 mm or less, especially
It is desirable that it is 10 mm or less.

[0025]

As described above, according to the present invention, it is possible to prevent lateral displacement of the absorber, promote urine diffusion in the width direction, and prevent vertical diffusion at the barrier cuff.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view of a disposable diaper according to the present invention in an unfolded state.

FIG. 2 is a perspective view of a main part thereof.

FIG. 3 is a schematic sectional view of a main part of the example of FIG. 2;

[Explanation of symbols]

1 ... liquid-impermeable sheet, 2 ... liquid-permeable sheet, 3 ... absorber,
Reference numeral 4 denotes a barrier sheet, 5 denotes an elastic member, 51 denotes an inner standing line, 52 denotes an outer standing line, 53 denotes a fixing line for shaping, 60 denotes a distal end, B denotes a barrier cuff, and F denotes a flap.

Claims (3)

(57) [Scope of request for utility model registration] 1. A barrier cuff which covers an absorbent body with a liquid-impermeable sheet and a liquid-permeable sheet, protrudes on both sides of a use surface side, and is provided with an elastic elastic member for protruding the absorber. ,
In a disposable diaper in which a flap is formed outside the side edge of the absorber, each of the barrier cuffs is formed of a water-repellent or water-impermeable barrier sheet, and the barrier sheet is folded inward to form a double sheet, The inner portion of the barrier sheet is secured to the liquid permeable sheet at least at the leg circumference with an inner erect line, and the outer portion of the barrier sheet at least at the flap portion of the leg circumference portion or extends. One piece which is fixed to the liquid-permeable sheet with an outer rising line, and furthermore, in the width direction intermediate between the inner rising line and the outer rising line, the inner portion and the outer portion of the barrier sheet extend in the longitudinal direction at least at the leg surrounding portion. A disposable diaper, wherein the disposable diapers are fixed to each other with the shaping fixing line. 2. The elastic expansion member according to claim 2, wherein the elastic member is a barrier sheet.
2. The disposable diaper according to claim 1, wherein the disposable diaper is disposed in the overlapping portion, and is fixed to the barrier sheet only at both ends in the longitudinal direction, and the barrier sheet is fixed to the disposable diaper body in an upside down state. 3. The elastic elastic member according to claim 1, wherein the barrier sheet is fixed only at both ends in the longitudinal direction at an intermediate portion in the width direction within the double portion of the barrier sheet, and the barrier sheet is folded inward with respect to the diaper main body. 2. The disposable diaper according to claim 1, wherein the disposable diaper is fixed by: