JPH01246402A - Throwaway diapers - Google Patents

Abstract

PURPOSE:To make the diaper more fitted by bonding the gather three- dimensionally formed by a stretching material to a part of the side flap extending from both ends of the absorber on the outer surface of the flap with a specific adhesive. CONSTITUTION:A gather is formed with a stretching material in the vertical direction three-dimensionally so that it projects upward. The gather is bonded to a part of the side trap extending from both sides of the absorber 2 by applying a water-soluble adhesive or an adhesive which can be peeled off by the movement of the user partially or wholly to the side flaps on the outside of the gather. The diaper can be easily fitted, because the gather fallen outside, when it is applied.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to disposable diapers. More specifically, the present invention relates to prevention of leakage of excrement of the wearer.

BACKGROUND OF THE INVENTION Conventional Technologies and Problems Various disposable diapers have been proposed in the past, and among them, prevention of feces and urine leakage from the crotch is one of the most important functions of a diaper, and various proposals have been made. - It has been practiced to install elastic materials on both sides of the absorbent body within the membrane to provide gears and elasticity in the crotch area. However, simply adding gears to both sides of the absorbent material to make it stretchy improves the fit between the crotch and the diaper, but it does not completely seal the crotch, so urine that is forcefully discharged from the wearer will not be able to completely seal the crotch. This often results in leakage of highly fluid stools (so-called soft stools).

Therefore, as shown in the commercial product Ultra Moony recently (
Japanese Unexamined Patent Publication No. 62-223303) proposes a method of wrapping an elastic material with a surface material (non-woven fabric) and using the elastic force of the surface material to form a three-dimensional barrier on the side portion of the diaper to prevent urine and feces from leaking. However, in this case, this three-dimensional expansion and contraction part is
When putting the diaper on the wearer, it gets in the way, makes it difficult to put on the diaper, and if it is not put on properly, the three-dimensional part will fold inward, increasing the effort of taking it out after putting it on.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide a disposable diaper that is easy to wear on the wearer and prevents leakage of excrement.

Means for Solving the Problems In order to achieve the above object, the present invention is proposed as a result of intensive research. That is, in a disposable diaper that has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body located between them, a part of the side flaps extending from both side ends of the absorbent body has an elastic material that stretches and contracts in the vertical direction. The gears, which are three-dimensionally formed to protrude from the upper surface of the gears, are partially or fully adhered to the outer side flaps of the gears with a water-soluble adhesive or an adhesive that can be peeled off by the movement of the wearer. This is how the present invention can be achieved.

In other words, by adhering the three-dimensionally formed gears to the outer side flaps of the gears, the three-dimensionally formed gears will be tilted or tilted to both sexes, and the bottom of the wearer (infant) will be attached to the diaper. The gears will not bend inward when it is applied, making it easier to install. However, if the gears were completely adhered to the side flaps, there would be no effect of three-dimensional formation of the gears. Therefore, the important point of the present invention is that the adhesive is in a state where it can be peeled off by urine or movement of the wearer. It is a certain thing.

By making this arrangement, the gears will fall outward when worn, making it easier to apply, and while being worn, the gears will peel off due to urine or the movement of the wearer, making the gears three-dimensional and preventing the leakage of excrement. be.

Therefore, PVA-based, EVA-based, starch-based adhesives or adhesives are good as adhesives that work in this way, but even rubber-based adhesives can be coated thinly and thinly to prevent movement of the wearer and urine. If it can be peeled off, it is still possible. Heat sealing is also possible as long as the sealing temperature and time are adjusted so that it can be peeled off in a manner consistent with the spirit of the present invention.

Also, in order to make this leak prevention function more effective, it is preferable to provide an elastic material that expands and contracts in the vertical direction on the outer side flap of the three-dimensionally formed gears to form gears further outside. In other words, by doing this, even if the excrement gets over the gear which is still in a fallen state,
The gears mentioned above make it possible to prevent the leakage of this excrement, thereby further improving the leakage prevention effect.

It should be noted that there may be a plurality of gears on the outside.

An even more important point is the height of the gears when they are formed three-dimensionally (when the adhesive comes off); if the gears are less than 5m, they will not be effective in preventing the leakage of excrement, and if it exceeds 40m+e, the height of the gears will be too high for the wearer. However, it feels uncomfortable, so it is necessary to limit it to 5 to 40 m+s.

In order to further increase this leak-preventing effect, fold both sides of the absorber 5 to 40 times, provide an elastic material that expands and contracts in the vertical direction near the end of the absorbent rod, and connect the folded portion and the elastic material to a top sheet. It is preferable that the gears formed by covering the absorbent body with gears are the three-dimensional gears described above. By forming such gears, the walls of the absorbent body can absorb the wearer's excrement more effectively. It can be stopped and leakage can be prevented. Also, at this time, in order to make it easier to fold both sides of this absorbent body and to make it easier to put the absorber gears on, it is possible to make the center part in the width direction of the absorbent body larger than the end parts. The absorbency of the absorbent material is improved, and the fit of the absorbent gears is also improved, which helps prevent urine and feces from leaking from the crotch.

Example The present invention will be explained in detail using the drawings.

FIG. 1 and FIG. 2 show one embodiment of the disposable diaper of the present invention, and FIG. 1 shows a state in which the three-dimensionally formed gears are attached to the outer side flaps before being attached. Figure 2 shows a situation in which the disposable diaper shown in Figure 1 is worn, and the adhesive peels off due to urine or movement of the wearer, and the three-dimensional gears stand up and act as a barrier to urine and feces leakage. It shows. 3 and 4 are cross-sectional views taken along line AA" and line BB' in FIGS. 1 and 2.
The figure is a sectional view of another embodiment of the disposable diaper of the present invention before use, in which gears are further provided on the outer side flaps of the three-dimensionally formed gears using an elastic material. This is a disposable diaper in which the formed gears are formed by folding back the back sheet together. FIGS. 6 and 7 show still another embodiment of the disposable diaper of the present invention, in which a three-dimensionally formed gatherer folds an absorbent body, and the disposable diaper of the present invention has a gatherer including the folded absorbent body portion. It is. FIG. 6 shows the device before it is worn, and FIG. 7 shows the device after it has been worn, with the adhesive peeling off due to urine or movement of the wearer, and the gears standing up. Figures 8 and 9 are similar to Figures 6 and 7.
It is sectional drawing of AA' and BB' of a figure.

[Brief explanation of the drawing]

Fig. 1. State of the disposable diaper of the present invention before wearing Fig. 2
Figure 3: A cross-sectional view of AA' in Figure 1. Figure 5: A cross-sectional view of BB' in Figure 2. Figure 6: A cross-sectional view of another embodiment of the disposable diaper of the present invention before it is worn. FIG. 7 shows another embodiment of the disposable diaper of the present invention before being worn. FIG. 8 shows another embodiment of the disposable diaper of the present invention after being worn. FIG. Cross-sectional view of BB' 1: Liquid-permeable surface material 2: Absorbent body 3: Liquid-impermeable backing material 4: Elastic material 5: Adhesive (can be peeled off by urine or movement of the wearer) 6; Elastic material 7: Adhesion Agent applicant Osamu Watanabe 1@
f20th May′ t

Claims (6)

[Claims] (1) In a disposable diaper that has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body located between them, a part of the side flaps extending from both side ends of the absorbent body is elasticated in the longitudinal direction. A disposable diaper characterized in that gathers are three-dimensionally formed to protrude from the upper surface using an elastic material, and are partially or entirely adhered with a water-soluble adhesive. (2) In a disposable diaper that has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body located between them, a part of the side flaps extending from both side ends of the absorbent body is elasticated in the longitudinal direction. A disposable diaper characterized in that gathers are three-dimensionally formed to protrude from the upper surface using an elastic material, and are partially or fully adhered with an adhesive that can be peeled off by the movement of the wearer (infant). (3) Item 1 or 2, characterized in that the gathers are formed by providing an elastic material that expands and contracts in the vertical direction on the side flaps on the outside of the three-dimensionally formed gathers.
Disposable diapers. (4) The disposable diaper according to item 1, item 2, or item 3, wherein the height of the protruding portion from the side flap is 5 to 40 mm. (5) In a disposable diaper that has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body located between them, fold both side edges of the absorbent body by 5 to 40 mm, and place a vertical line near the ends. A stretchable material is provided, and the folded part and the stretchable material are covered with a top sheet (when the absorbent body is folded back, the back sheet may also be folded and covered with a top sheet).
A three-dimensional gather containing an absorbent material is formed, and the outer side flap of the gather is partially or fully adhered with a water-soluble adhesive or an adhesive and adhesive method that can be peeled off by the movement of the wearer (infant). Disposable diapers with special features. (6) The disposable diaper according to item 5, wherein the gathers are formed by providing an elastic material that expands and contracts in the vertical direction on the side flaps outside the three-dimensionally formed gathers.