JPH01162801A - Disposable paper diaper - Google Patents

Abstract

PURPOSE: To provide the subject diaper high in fittability to a wearer and improved in a liquid-holding ability by forming specific embossing lines in a liquid- absorbing member disposed between a liquid-permeable surface sheet and a liquid-impermeable back sheet. CONSTITUTION: Embossing lines 7 are formed in a liquid-absorbing member 3 so as to have starting points 7a, 7b on the lateral sides from both the side edges 3a, 3b in the central part of the liquid-absorbing member 3 and to form depressed parts (e.g. trapezoidal or semi-circular parts). The absorbing member 3 is bent along the embossing lines 7 in response to the movement of the crotch part of a wearer to approximately flatten the laterally central part of the liquid- absorbing member 3, thus improving the absorbing performance and appearance of the diaper.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to disposable diapers such as diapers for infants and incontinence briefs for adults.

[Prior Art] Conventionally, it has been a challenge to improve the liquid retention ability of disposable diapers, particularly paper diapers. In order to improve this liquid retention ability, it is necessary to improve the fit of the diaper to the wearer's body, and various measures have been taken for this purpose.

For example, methods have been adopted such as providing elastic stretchable bodies around the legs and waist, or providing a large number of embossed lines on an absorbent pad, and using these embossed lines to increase attachment to the wearer's groin area.

[Problems to be Solved by the Invention] However, although all of these conventional techniques can improve the liquid retention ability to some extent, they are still insufficient. The bottleneck in improving liquid retention is that the width of the diaper's absorbent core is larger than the wearer's crotch area. In other words, due to the difference in width between the two, the absorbent body of the diaper cannot fully follow the movements of the wearer's legs, causing discomfort.
As a result of forming regular wrinkles and gathering them in the center, the absorbent surface of the absorbent body cannot come into close contact with the wearer's skin.

This not only reduces the absorption efficiency of body fluids, but also causes swelling in the area corresponding to the groin area, resulting in poor appearance when worn.

Therefore, the main object of the present invention is to provide a disposable disposable diaper that has improved fit to the wearer and improved liquid retention ability.

[Means for Solving the Problems] The present invention for solving the above problems provides a disposable disposable diaper in which a body fluid absorber is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet. , in the longitudinal center of the absorbent body, there are both starting points spaced apart in the longitudinal direction from both side edges toward the center in the width direction, and concave embossed lines are formed from these starting points toward the center in the width direction, respectively. It is characterized by the fact that

[Function] In the present invention, since the above-mentioned embossed line is formed on the widthwise center of the absorbent body, that is, on the part facing the wearer's crotch area, when the absorbent body is worn on the wearer, the absorbent body will not bend at the above-mentioned embossed line. , the absorber in the inner part will be placed below the other parts. Therefore, the absorbent body does not gather toward the center due to the movement of the wearer, and a constant absorption surface can be maintained regardless of the movement of the wearer, thereby improving the absorption efficiency of body fluids. Moreover, the absorbent material on the center side from the embossed line is folded to the F side to form a depression, in which bodily fluids are temporarily collected and then absorbed, thereby preventing sideward leakage of bodily fluids.

[Specific Structure of the Invention] The present invention will be explained in more detail below with reference to the drawings. 1st
3 to 3 show examples of the present invention, and the basic structure of this diaper is a liquid-permeable top sheet 1 made of a water-permeable material such as a nonwoven fabric, and a liquid-permeable top sheet 1 made of a water-impermeable material such as polyethylene. An absorbent body 3 mainly made of cotton-like pulp is wrapped between the permeable back sheet and the periphery, and on both sides of the diaper, along the longitudinal direction (Fig. 1 - downward direction), A adhesive elastic member 4 such as rubber is provided. In addition, in the front part of the edge (flap part) 5 where the absorbent body 3 is not present at both ends of the diaper in the longitudinal direction, there is a joint that joins the front and rear waist parts along the [1] direction (left-right direction in Figure 1) of the diaper. tape 6
is provided.

As mentioned above, the feature of the present invention is that the absorbent body 3 is embossed in a predetermined manner. As shown in Figure 1, the emboss lines are the first emboss 7.7 degrees, the second emboss 8.8 degrees,
Although it is preferable to form each third embossing 9, the first embossing 7 is particularly essential. 1st emboss 7
has starting points 7a, 7b in the width direction from both side edges 3a, 3a of the central part of the absorbent body 3, and is formed so as to form a concave shape (trapezoidal shape, semicircular shape, etc.) in the widthwise center. There is. The second embossing 8 is formed in a straight line starting from the vicinity of both measuring portions at both ends in the longitudinal direction. Further, the third emboss 9 has both starting points 7c, 7c facing each other on the abdominal side of the first emboss 7 (lower side in Figure 1), connects these two starting points 7c, 7c, and is formed in a concave shape on the abdominal side. ing.

Next, to explain the direction of embossing in the present invention, the first embossing 7 and the third embossing 9 are applied only to the skin side of the absorbent body 3 (upper side in FIG. 2) or from both the skin side and the back side. It is preferable to apply embossing from both sides.

Further, it is preferable that the second embossing 8 is provided only on the back side or on both sides.

” - Reporter When a user wears a disposable diaper including the absorbent body 3 formed in 7.8.9, the absorbent body 3 moves according to the movement of the crotch area M' of the wearer M, as shown in 3rd iN. is bent downward along the first embossing 7. Comparing the widthwise center part C of the absorbent body 3 with the conventional example (Fig. 4), it is found that in the past, the absorbent body 3
As the material moves, wrinkles are concentrated at the center in the width direction, resulting in a decrease in body fluid absorption performance and poor appearance, whereas in the present invention, the portion C is substantially the bulk of the material.

Both absorption performance and appearance are improved.

In addition, since the embossing 9 is submerged, body fluid discharged from the private part of the γ1 river can be received by the area surrounded by the embossing and then absorbed into the area C.

Since body fluids are concentrated in the center portion C of the absorbent body 3 according to the present invention, it is preferable to use a substance with particularly high absorption performance, such as a liquid-absorbing polymer.

The specifications of each Enphos according to the present invention are preferably within the following ranges (see Figure 1).

1st emboss> Length 11: 173 to 2/3 of absorber length l Embossed wire diameter: 50 to 200 IIIlψ 2nd emboss> Length l: Total length width W in absorber length direction, : 1 of absorber width W /4~3/4 3rd emboss> Length 12: 1/10~1/3 of absorber length 1 Emboss wire diameter: 100~300 ff1m dimension II] W2:
10-100mm [Effects of the Invention] As described above, according to the present invention, it fits the wearer,
It is possible to provide a disposable disposable diaper that not only has improved absorption performance for body fluids but also has a good appearance.

[Brief explanation of the drawing]

: Figure 31 is a partially cutaway view of the disposable diaper according to the present invention, Figure 2 is a cross-sectional view taken along the line II-II, Figure 3 is an explanatory diagram of the state of the absorber of the disposable diaper according to the present invention when worn, 4
The figure is an explanatory diagram of a conventional example. 1...Liquid-permeable top sheet, 2...Liquid-impermeable back sheet, 3...Absorber, 4...Relastic elasticity? ,
7...First emboss, 8...Second emboss, 9...
・Third emboss. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] (1) In a disposable disposable diaper in which a body fluid absorber is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, in the longitudinal center of the absorber, the center in the width direction is wider than both side edges. 1. A disposable disposable diaper characterized by having both starting points spaced apart in the longitudinal direction, and having concave embossed lines extending from these starting points toward the center in the width direction.