JPS62199802A - Disposable diaper - 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 provides a function in which the stretchable elastic line made by the stretchable elastic member around one leg adapts to the body shape and effectively prevents excrement from leaking from around the leg. The present invention relates to a disposable diaper.

[Conventional technology]

Conventionally, in disposable diapers, each area on the back side and the lower part 115 is formed wider than the front side area, and the opposing stretchable elastic members for the legs are diagonally diagonally expanded outward toward the back side area. It is known that it is installed in this way.

[Problem that the invention seeks to solve]

The above-mentioned known diaper has a preferable form in terms of wearability and prevention of leakage of excreta, but since the stretchable elastic member is attached diagonally, the diaper production process and equipment are complicated, resulting in low production efficiency and high cost. .

Moreover, although the opposite side of the crotch area stands upward due to the contraction action of the stretchable elastic member, the portion where the stretchable elastic member is located tends to be almost vertical or slightly bent inward, so that when the diaper is worn, , the part where the stretchable elastic member is located will be drawn toward the base of the wearer's body, and this situation is undesirable in terms of preventing leakage of excrement from around the legs.

[Means for solving problems]

The main object of the present invention is to provide a disposable diaper that can solve the above problems by relatively simple means.

The gist of the means of the present invention for achieving the above object is that the device has a front side area and a back side area with the crotch area as the central part, and is attached so as to extend outward to the opposite side of the back side area. 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 region is folded inward, and the folded portion is further folded outward to form a pleated portion, The diaper is characterized in that the pleats are fixed.

In a preferred embodiment of the invention, the opposite sides of each region are formed into flaps that are more flexible than the central portion between them.

〔Example〕

Further, the present invention will be explained based on illustrated embodiments.
It is as follows.

The diaper includes a flexible and water-permeable top sheet 1, a flexible and water-impermeable back sheet 2, a semi-rigid and absorbent core 3 interposed between the front and back sheets, and the core. A stretchable elastic member 9 is attached parallel to the flaps 4 and 5 extending outward from the outer peripheral edge of the crotch region 6 and the flap 5 on the opposite side in the crotch region 6.
and an adhesive tape IO extending outwardly and attached to opposite sides in the dorsal region 8. Such a diaper is assembled by gluing the adhesive tape IO to the front side in the front region 7 and belongs to the known art.

Front and back seams) 1.2 are made narrower by cutting the opposite side of the crotch area 6 to improve the fit to the body, and to prevent the diaper from touching the newborn baby's cord, the outer side of the front area 7 is made narrower. In order to prevent excrement from leaking from the outer end of the dorsal area 8, the central part 91 along the edge is formed to form the recessed notch 11, and in order to prevent excrement from leaking from the outer end of the dorsal region 8, the outer end of the region is A convex portion 12 having the same shape and size as the concave notch 11 is formed at an opposing portion. Also.

In order to improve the appearance design and wearability, the outer edges of the recessed part 11 and the protruding part 12, and the outer edges of each area 8, 7.8 are curved. The back sheet is made of a breathable and waterproof plastic film, a laminate sheet of this and a nonwoven fabric, etc., and is bonded with an adhesive or the like at least in the area where the outer periphery and the core 3 are in contact with each other.

The core 3 is made of cotton-like pulp or a mixture of this and superabsorbent polymer particles, and the front and back sheets 1 are formed from the outer periphery of the core 3.
．． The outer peripheral edge of 2 is formed to a size that extends a predetermined length, and in order to increase the absorption capacity of excrement in the dorsal region 8 than that of the front region 7 and prevent leakage, the outer peripheral edge of the be.

In the illustrated example, it is formed in a rectangular shape, but depending on the case, the front and back regions 7 and 8 may be formed in a so-called hourglass shape, which is wider than the crotch region 6.

The flap 5 on the opposite side of the front region 7 has a first folding line 1
3, and the folded portion is folded back to the outside via the second folding line 14, and these folded portions form a pleated portion 15, and the overlapping portion 1G is fixed with adhesive or welding means. . Incidentally, when manufacturing the diaper, the above-mentioned two folding operations are performed so that the inseam region 6 and the front region 7 are also folded back at the same time.
When the diaper is appropriately folded and unfolded for use by the consumer, it will look like the one shown in FIG. 2.

As understood from FIGS. 2 and 4, the opposing stretchable elastic members 9 expand outward toward the dorsal region 8 and are displaced obliquely. Further, the flaps 5 extending outward from the opposite side edges of the core 3 in the crotch region stand up upward due to the contraction action of the stretchable elastic member 9, and furthermore, the flaps 5 extending outward from the opposite side edges of the core 3 in the crotch region stand up upwardly due to the contraction action of the stretchable elastic member 9. The part where is located is bent outward. The reason why the flap 5 is formed in this way is that the flexibility is much higher than that of the core 3, and the contractile force of the stretchable elastic member 9 acts relatively strongly, and as mentioned above, the flap 5 has a relatively high flexibility compared to the core 3. The flap 5 is the second fold! This is because the flap 5 in the crotch area is affected by being folded back to the outside via l1j14 and the stretchable elastic member 9 being located outside of the folding line.

Further, part or all of the flap 5 may be formed by adding a suitable flexible sheet to the outside of the top sheet 1 and/or the back sheet 2.

〔Effect of the invention〕

According to the diaper of the present invention having the above-described configuration, although the stretchable elastic members located on the opposite side are attached in parallel to the opposite side, when the diaper is unfolded, wearability and excrement are not easily removed. The attachment that is effective in preventing leakage is displaced in a state that is diagonal, expanding outward toward the dorsal region. Therefore, compared to a diaper in which opposing stretchable elastic members are attached diagonally from the time of manufacturing the diaper, the manufacturing process and equipment for the diaper are simple, the production efficiency is high, and the cost is low.

Moreover, the opposite side of the gluteal region stands up due to the contraction action of the stretchable elastic member, and the part where the stretchable elastic member is located is bent outward by folding back the flap in the front region. The positioned part is not drawn toward the wearer's crotch, but is pressed against a part as far away as possible from the crotch of the wearer, thereby broadly covering the crotch. Therefore, it is possible to achieve a natural wearing condition and to effectively prevent leakage of excrement from around the legs.

[Brief explanation of drawings]

The drawings show one embodiment of the diaper of the present invention, and FIG. 1 is a partially cutaway developed plan view in an unfinished state, FIG. 4 is a sectional view taken along the YY line in FIG. 2, and FIG. 5 is a sectional view taken along the Z-Z line in FIG. 2. l...Top sheet 2...Back sheet 3...
・Core 5...Flap 6...Inseam area 7...Front area 8...Dorsal area
9...Stretchable elastic member lO...Adhesive tape
13...First folding line 14...Second folding line 15...Fold portion Fig. 1

Claims (2)

[Claims] (1) It has a front side area and a dorsal side area with the crotch area as the central part, and an adhesive tape is attached to the opposite side of the dorsal area so as to extend outward, and an adhesive tape is attached in parallel to the opposite side of the crotch area. A disposable diaper comprising a stretchable elastic member, characterized in that the opposite side of the front region is folded inward, the folded portion is further folded back outward to form a folded portion, and the folded portion is fixed. Diapers. (2) The opposing sides of each of the regions are formed into flaps that are more flexible than the central portion between the opposing sides, and the stretchable elastic member is attached near the outer edge of the flap. The diaper described in item 1.