JPH069583B2 - Disposable diapers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention has a function of effectively preventing the excrement from leaking from the leg circumference by the stretchable elastic wire made of the stretchable elastic member around the leg conforming to the body shape. And a disposable diaper having

[Conventional technology]

Conventionally, in a disposable diaper, each region of the back side and the crotch region is formed wider than the front side region, and the elastic elastic members for opposing legs are spread toward the back side region and are positioned obliquely so as to spread outward. The one attached is known.

[Problems to be solved by the invention]

The known diaper is a preferable form in terms of wearability and leakage prevention of excrement, but since the elastic elastic member is obliquely attached, the production process and device of the diaper are complicated and the production efficiency is low and the cost is high. .

Moreover, although the opposite side of the crotch region is erected upward due to the contracting action of the elastic member, the portion where the elastic member is located has a tendency to bend almost vertically or slightly inward, so that when the diaper is worn. The portion where the elastic elastic member is located is pulled toward the side of the thigh root of the wearer, and such a state is not preferable for preventing leakage of excrement from around the legs.

[Means for solving problems]

A main object of the present invention is to provide a disposable diaper capable of solving the above problems by a relatively simple means.

The gist of the means of the present invention for achieving the above-mentioned object is to have a front region and a dorsal region with the crotch region as a central portion, and the device is attached to the opposite side of the dorsal region so as to extend outward. In a disposable diaper including an adhesive tape and a stretchable elastic member attached in parallel to the opposite side of the crotch region, the opposite side of the front side region is folded back inward and the folded back portion is further folded back to form a fold portion, The diaper is characterized in that the fold portion is fixed.

In a preferred embodiment of the present invention, the opposite sides of the respective regions are formed with flaps having higher flexibility than the central portion between them.

〔Example〕

Further, the present invention will be described based on the illustrated embodiment,
It is as follows.

The diaper includes a flexible and water-permeable topsheet 1, a flexible and water-impermeable backsheet 2, a semi-rigid and absorbent core 3 interposed between the front and backsheets, and the core. Elastic members 9 attached in parallel to the flaps 4 and 5 extending outward from the outer peripheral edge of the and the flap 5 on the opposite side in the crotch region 6.
And an adhesive tape 10 attached to the opposite side of the back side region 8 so as to extend outward. Such a diaper is assembled by adhering the adhesive tape 10 to the front surface in the front region 7 and is known in the art.

The front and back sheets 1 and 2 have good compatibility with the body,
In order to avoid the diaper from hitting the navel of the newborn baby by forming a narrow width on the opposite side of the crotch region 6 and forming a recessed portion 11 at the central region along the outer edge of the front region 7, and , To prevent excrement from leaking from the outer end of the dorsal region 8,
A projecting portion 12 having the same shape and size as the recessed portion 11 is formed at the outer end of the region facing the recessed portion 11. Also,
In order to improve the external appearance design and wearability, the recessed portion 11 is formed with a curved outer edge of the protruding portion 12 and the outer edges of the corners of the regions 6, 7, and 8. The topsheet 1 is made of a porous nonwoven fabric, a porous plastic film, etc., and the backsheet is made of a breathable waterproof plastic film, a laminate sheet of this and a nonwoven fabric, etc., and at least the area in contact with the outer peripheral edge and the core 3. In this case, they are joined by an adhesive or the like.

The core 3 is made of cotton-like pulp, a mixture of the pulp and superabsorbent polymer particles, and the like.
The outer peripheral edge of 2 is formed to have a size extending to a predetermined length, and is displaced to the front region 7 in order to increase the absorption capacity of excrement in the back region 8 and prevent its leakage. is there. In the illustrated example, it is formed in a rectangular shape, but in some cases, the front back regions 7, 8 may be formed in a so-called hourglass, which is wider than the crotch region 6.

The flap 5 on the opposite side of the front region 7 has the first folding line 13
The folded-back portion is folded back inward through the second folded-back line 14 and the folded-back portion is folded back outward through the second folded-back line 14, and a folded portion 15 is formed by these folded-back portions. By the way, in the production of diapers, the two folding operations are performed so that the crotch region 6 and the front region 7 are also folded at the same time. When the diaper is appropriately folded and unfolded for use by the consumer,
As shown in the figure.

As can be seen from FIGS. 2 and 4, the stretchable elastic members 9 facing each other extend toward the back side region 8 to the outside and are obliquely displaced. Further, the flap 5 extending outward from the opposite side edge of the core 3 in the crotch region is erected upward due to the contracting action of the elastic elastic member 9, and further, at the upper part of the erected portion, which is the elastic elastic member 9. The part where is located is bent outward. The flap 5 is formed in this way because the flap 5 has very high flexibility as compared with the core 3, the contraction force of the elastic elastic member 9 acts relatively strongly, and the front region as described above. This is because the flap 5 is folded back to the outside via the second folding line 14 and the elastic elastic member 9 is located outside the folding line, whereby the flap 5 in the crotch region is affected.

Further, a part or all of the flap 5 may be formed by adding an appropriate flexible sheet to the outside of the topsheet 1 and / or the backsheet 2.

〔The invention's effect〕

According to the diaper of the present invention having the above-described configuration, the elastic elastic members located on the opposite side are attached in parallel to the opposite side, but in the unfolded state of the diaper, the wearability and the excrement are excreted. In order to prevent leakage, the mounting state is effective, that is, it is displaced toward the back side region and spreads outward to be inclined. Therefore, as compared with the case where the elastic elastic members facing each other are obliquely attached from the time of manufacturing the diaper, the diaper production process and apparatus are simple, the production efficiency is high, and the cost is low.

Moreover, since the opposite side of the crotch region is erected by the contracting action of the elastic elastic member, and the portion where the elastic elastic member is located is bent outward due to the folding back of the flap in the front region, the elastic elastic member is positioned when the diaper is worn. Without the portion to be pulled toward the wearer's thigh root side, the portion comes into pressure contact with a portion as far away from the thigh root as possible to widely cover the inseam. Therefore, the wearer can be naturally worn and the leakage of excrement from around the legs can be effectively prevented.

[Brief description of drawings]

The drawings show one embodiment of the diaper of the present invention. FIG. 1 is a developed plan view of a partially cutaway unfinished state, FIG. 2 is a perspective view of the finished state, and FIG. 3 is FIG. FIG. 4 is a sectional view taken along line YY of FIG. 2, and FIG. 5 is a sectional view taken along line ZZ of FIG. 1 ... Top sheet, 2 ... Back sheet 3 ... Core, 5 ... Flap 6 ... Inseam area, 7 ... Front area 8 ... Dorsal area, 9 ... Elastic elastic member 10 ... Adhesive tape , 13 …… First fold line 14 …… Second fold line, 15 …… Fold part

Claims (2)

[Claims] 1. An adhesive tape having a front side region and a back side region with the crotch region as a central portion and extending outwardly on the opposite side of the back side region and attached to the opposite side of the crotch region. In a disposable diaper including an attached elastic elastic member, the opposite side of the front region is folded back inward and the folded portion is further folded back to form a fold portion, and the fold portion is fixed. The diaper mentioned above. 2. The opposite side of each region is formed as a flap that is more flexible than the central portion between the opposite sides, and the elastic elastic member is attached near the outer edge of the flap. The diaper according to the first section.