JP2001245924A - Throw-away diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a throw-away diaper capable of surely catching a loose passage to prevent side leakage, and completely eliminating the sense of incompatibility in wearing. SOLUTION: This throw-away diaper is provided with a liquid absorbing material 3 disposed between a liquid permeable surface sheet 1 and a liquid impermeable back sheet 2. In the diaper, plural pleats 4 are formed extending in the longitudinal direction side by side along the cross-direction intersecting perpendicularly to the longitudinal direction. The right half pleats bordering on the center line L extending in the longitudinal direction of the surface sheet 1 are released at the left side edge 41a, and the left half pleats 42 are released at the right side edge 42a to be respectively folded on the surface sheet 1. The pleats 4 are stopped at a fixed space extending in the longitudinal direction to the surface sheet 1. Thus, the surface sheet 1 is provided with plural small bag-like pocket parts 1a by the pleats 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper, and more particularly to a disposable diaper formed so that lateral leakage can be reliably prevented even when stool is soft (hereinafter referred to as loose stool).

[0002]

2. Description of the Related Art Conventionally, as a diaper of this type, for example, a liquid-absorbing material is provided between a liquid-permeable top sheet and a liquid-impermeable back sheet, and is provided at a rear half position of the top sheet. There is a configuration in which a plurality of protruding portions extending in the width direction are intermittently arranged in the front-rear direction (longitudinal direction) (for example, Japanese Patent Application Laid-Open No. 11-3).
18976).

[0003]

By the way, this kind of diaper can surely catch loose stool and prevent it from leaking and leaking to the front, rear, left and right, and also fits the skin when worn to give the user a sense of discomfort. It is desirable that it be formed so as not to be present.

However, in the conventional product, as described above, the raised portions are formed intermittently in the front-rear direction, so that loose stool easily flows out in the width direction (lateral direction) from the groove-shaped gap between the adjacent raised portions. It was easy for the user to feel uncomfortable because the part pressed the skin.

[0005] The present invention has been proposed in view of such problems of conventional products. Therefore, a technical problem of the present invention is to provide a disposable diaper formed so that loose stool can be reliably captured to prevent side leakage and that a user does not feel uncomfortable when wearing the diaper.

[0006]

The present invention employs the following technical means in order to solve the above-mentioned problems.

That is, according to the present invention, as shown in FIG.
A disposable diaper comprising a liquid-absorbent material 3 between a liquid-permeable top sheet 1 and a liquid-impermeable back sheet 2, wherein a pleat 4 extends in the longitudinal direction on the front side of the top sheet 1. And a plurality of them are formed in parallel in the width direction orthogonal to the longitudinal direction, and at the center line L extending in the longitudinal direction of the topsheet 1,
The right half pleats 41 release the left side edge 41a, the left half pleats 42 release the right side edge 42a and are folded on the topsheet 1, respectively, and the pleats 4 are spaced at regular intervals in the longitudinal direction. The top sheet 1 is provided with a plurality of small bag-shaped pockets 1a by the pleats 4 (claim 1).

In the case of the present invention, the number of pleats 4 to be formed and the width thereof are arbitrary. Also, the volume and number of the pocket portions 1a may be appropriately selected depending on the length and width of the topsheet 1, and the like.

Further, in the present invention, it is preferable that the pleats 4 are formed in parallel, and the width of the pleats 4 is formed to be the same over the width direction of the topsheet 1 (claim 2).

In this case, the formation of the pleats 4 can be facilitated, and the manufacturing cost can be reduced.

In the present invention, as shown in FIG. 6, it is preferable that the pleats 4 are formed so as to become wider as approaching a center line L extending in the longitudinal direction of the topsheet 1 (claim 3).

The stool is usually excreted at a position on the center line L extending in the longitudinal direction of the topsheet 1. In the case of the present invention, since the opening of the pocket portion 1a becomes larger as it is closer to the center line L, the stool can be captured and stored at a position closer to the center line L, thereby preventing lateral leakage. is there.

In the present invention, as shown in FIG. 7 and FIG. 8, the pleats 4 may be formed with the formation interval D changed. In this case, in particular, as shown in FIG. 8, it is preferable that the formation interval D of the pleats 4 is formed to be narrower as it goes away from the center line L extending in the longitudinal direction of the topsheet 1. ).

In this case, the pocket portion 1a is reliably opened by the stool excreted near the center line L, and as a result, the stool is easily captured.

In the present invention, as shown in FIG. 9, it is preferable that the positions of the fixing points 4a in the longitudinal direction of the pleats 4 are shifted between adjacent pleats 4 (claim 5).

In this case, the excrement flowing in the width direction over the valley of the pleats 4 can be captured by the pockets 1a of the adjacent outer pleats 4, so that lateral leakage can be reliably prevented.

[0017]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1 and the like, 1 is a liquid-permeable top sheet, and 2 is a liquid-impermeable back sheet. 3 is a water absorbing polymer as a liquid absorbing material. This liquid absorbing material 3
Is provided between the top sheet 1 and the back sheet 2.

In the present invention, a plurality of pleats 4 are formed on the topsheet 1 so as to extend in the longitudinal direction thereof and to be arranged in a width direction orthogonal to the longitudinal direction. Pleat 4
In this embodiment, as shown in FIG. 2, the pleats 4 are formed in parallel, and the width of the pleats 4 is formed to be the same over the width direction of the topsheet 1.

L is a center line extending in the longitudinal direction of the topsheet 1. The pleats 4 are folded over the topsheet 1 with the right half pleats 41 releasing the left side edge 41a and the left half pleats 42 releasing the right side edge 42a with respect to the center line L.

The pleats 4 are fixed to the topsheet 1 at regular intervals in the longitudinal direction. This fastening portion 4a is heat-welded in this embodiment,
The pleat 4 is integrated with the topsheet 1 and the liquid-absorbent material 3 at this portion 4a. The portion 4b between the fastening portions 4a is separated from the topsheet 1 and is released. In the product of the present invention, a plurality of small bag-shaped pocket portions 1a are thus formed on the topsheet 1.

Next, the operation of the present invention will be described.

In the case of the present invention, the liquid absorbent material 3
Expands from the state of FIG. 4 with urine as shown in FIG. In this case, the portion 4b between the fastening portions 4a of the pleats 4 is separated from the topsheet 1 as described above.

Therefore, when the liquid absorbent material 3 expands, the stool 5 excreted between the expanding topsheet 1 and the buttocks (FIG. 5).
) Pushes back the expanding topsheet 1. As a result, as shown in FIG. 5, the above-mentioned portion 4b of the pleat 4 is separated from the topsheet 1, the pocket 1a is opened,
The stool 5 is captured by the pocket 1a.

[0025]

As described above, according to the present invention, a plurality of pleats are formed extending in the longitudinal direction and arranged in parallel in the width direction perpendicular to the longitudinal direction. The pleats on the right half release the left edge, the pleats on the left half release the right edge and fold each on the topsheet, and the pleats are fixed to the topsheet at regular intervals in the longitudinal direction. The sheet is provided with a plurality of small bag-shaped pocket portions.

Therefore, in the case of the present invention, when the liquid-absorbing material expands, the excreted stool pushes back the expanding surface sheet to open the pocket. Therefore, if this is used, the stool can be captured by the pocket portion, so that side leakage can be reliably prevented.

Further, in the case of the present invention, since the pleats are folded almost flush with the topsheet, the user does not feel uncomfortable when wearing the pleats.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a preferred embodiment of a diaper according to the present invention.

FIG. 2 is a plan view of the diaper.

FIG. 3 is a sectional perspective view of a main part taken along line III-III in FIG. 2;

FIG. 4 is a sectional view of an essential part for explaining the operation of the diaper.

FIG. 5 is a sectional view of an essential part for explaining the operation of the diaper.

FIG. 6 is a plan view of a main part showing another embodiment of the diaper.

FIG. 7 is a plan view of a main part showing another embodiment of the diaper.

FIG. 8 is a plan view of a main part showing another embodiment of the diaper.

FIG. 9 is a plan view of a main part showing still another embodiment of the diaper.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Top sheet 1a Pocket part 2 Back sheet 3 Liquid-absorbent material 4 Pleat 41 Right half pleat 41a Left edge 42 Left half pleat 42a Right edge 4a Clamping point 4b Portion between clamping points 5 Form of flight D pleat Spacing L center line

Claims (5)

[Claims] 1. A disposable diaper comprising a liquid-absorbent material between a liquid-permeable top sheet and a liquid-impermeable back sheet, wherein a pleat extends in a longitudinal direction on a front side of the top sheet. A plurality of which are formed in parallel in the width direction orthogonal to the longitudinal direction, and at the center line extending in the longitudinal direction of the topsheet,
The pleats of the right half release the left edge, the pleats of the left half release the right edge and are folded on the face sheet, respectively, and the pleats are fixed to the face sheet at regular intervals in the longitudinal direction. A disposable diaper characterized in that the topsheet is provided with a plurality of small bag-shaped pockets by pleating. 2. The disposable diaper according to claim 1, wherein the pleats are formed in parallel, and the width of the pleats is formed to be the same in the width direction of the topsheet. 3. The disposable diaper according to claim 1, wherein the pleats are formed wider as the pleats are closer to a center line extending in the longitudinal direction of the topsheet. 4. The disposable diaper according to claim 1, wherein the interval between the formation of the pleats becomes narrower as the distance from the center line extending in the longitudinal direction of the topsheet increases. . 5. The disposable diaper according to any one of claims 1 to 4, wherein the positions of the pleats in the longitudinal direction thereof are shifted between adjacent pleats. .