JP2676207B2 - Disposable paper diapers - Google Patents

Description

The present invention relates to disposable diapers such as infant diapers and adult incontinence briefs. [Prior Art] Conventionally, in disposable diapers, especially paper diapers,
There has been a problem to improve the liquid holding capacity. In order to improve the 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 reason. For example, a method has been adopted in which elastic stretchable bodies are provided around the legs and the waist, or a large number of embossed lines are provided on the absorbent pad, and these embossed lines increase the followability to the wearer's crotch. [Problems to be Solved by the Invention] However, although these conventional techniques can obtain some degree of improvement effect on the liquid retaining ability, they are still insufficient. The bottleneck in improving the liquid retention is that the width of the absorbent body of the diaper is larger than the width of the wearer's crotch. That is, since there is a difference in width between the two,
The absorber of the diaper is unable to follow the movement of the wearer's legs, forming irregular wrinkles, the result of gathering in the central part, and the absorber's absorbing surface cannot adhere to the wearer's skin. . Therefore, not only the efficiency of absorbing body fluid is lowered, but also the portion corresponding to the crotch swells and the appearance at the time of wearing deteriorates. Therefore, a main object of the present invention is to provide a disposable paper diaper having improved fitability to a wearer and improved liquid retaining ability. [Means for Solving Problems] The present invention for solving the above problems, in a disposable paper diaper having a body fluid absorber interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet. A second embossed line extending in the longitudinal direction is formed inside both side edges of the absorbent body, and a central portion in the widthwise direction of the absorbent body is recessed toward the center in the widthwise direction at the central portion in the longitudinal direction of the absorbent body. The disposable diaper is characterized in that the first embossed lines are formed, and the body fluid absorption regions where the first embossed lines do not intersect are formed. [Action] The area of the absorbent body is required to some extent from the viewpoint of the absorbability of body fluid and because the drainage site is not constant with the movement of the wearer. However, in the present invention, the second embossed line extending in the longitudinal direction is formed inside both side edges of the absorbent body, and further, in the central portion in the longitudinal direction of the absorbent body (the portion facing the wearer's crotch portion), Since the first embossed lines are formed so that the center of the width direction extends toward the crocodile and is continuous with the two embossed lines, the second embossed line and the first embossed line are scattered when worn on the wearer. , Fits well along the shape of the crotch of the wearer. Further, as a result, the absorbent body in the body fluid absorbing region where the first embossing lines do not intersect is located at the lower side of the other portion. For this reason, the situation that the center of the absorbent body does not gather around the waist due to the movement of the wearer does not occur, and a constant absorption surface can be maintained regardless of the movement of the wearer, and the absorption efficiency of body fluid can be improved. Moreover, the bodily fluid absorption region where the first embossing lines do not intersect with each other folds into a dimple at the bottom to form a dimple, and the bodily fluid temporarily accumulates there and is then absorbed, so that lateral leakage of the bodily fluid can be prevented. [Specific Configuration of the Invention] The present invention will be described more specifically with reference to the drawings. 1 to 3 show an embodiment of the present invention. The basic structure of this diaper is composed of a liquid permeable surface sheet 1 made of a water permeable material such as nonwoven fabric and a water impermeable material such as polyethylene. A liquid-impermeable back sheet is wrapped with an absorbent body 3 mainly composed of a cotton-like pipe with the periphery left, and on both sides of the diaper along the longitudinal direction (up and down direction in FIG. 1), An elastic stretchable member 4 such as rubber is provided. In addition, a binding tape 6 for joining the front and rear waist portions along the width direction (left and right direction in FIG. 1) of the diaper in the longitudinal direction at both ends in the width direction (left and right direction in FIG. 1) of the edge (flap portion) 5 where the absorber 3 does not exist. Is provided. The feature of the present invention resides in that, as described above, the absorber 3 is subjected to predetermined first and second embossing wire processing. As shown in FIG. 1, the embossed wire is the first embossed wire 7,7,
It is preferable to form the second embossed lines 8 and 8 and the third embossed line 9 respectively, but especially the first embossed line 7 and the second embossed line
Embossed wire is an essential requirement. The second embossed line 8 is formed in a straight line shape starting from the vicinity of both sides of both ends in the longitudinal direction. The first embossed line 7 is the second inner side from the both side edges 3a, 3a of the central portion of the absorber 3.
It has starting points 7a and 7b connected to the embossed line 8 and is formed such that the center in the width direction has a concave shape (trapezoidal shape, semicircular shape, etc.). Further, the third embossment 9 has the abdomen of the first embossing 7 at the opposite positions 7c, 7c of the abdomen (downward in FIG. 1) as both starting points, and connects the both starting points 7c, 7c, and the abdomen is formed in a concave shape in the abdomen. ing. Next, the direction of embossing in the present invention will be described. The first embossing 7 and the third embossing 9 are made only from the skin of the absorbent body 3 (upper skin of FIG. 2) or the skin and the back surface of the absorbent body 3. It is preferable to emboss both sides. Further, it is preferable that the second embossing 8 is provided only on the back surface or on both sides. When a wearer wears a paper diaper including the absorber 3 having the embosses 7, 8, and 9 formed thereon, as shown in FIG. 3, the absorber 3 moves in accordance with the movement of the crotch M ′ of the wearer M. The lower part is bent along the first embossing 7. At this time, comparing the body fluid absorption region portion C where the center in the width direction of the absorbent body 3 is compared with the conventional example (Fig. 4), the conventional absorbent body 3 is the wearer M.
In accordance with the movement of the crotch portion M ', the body fluid is absorbed in the center portion in the width direction and becomes wrinkled, so that the body fluid absorption performance is deteriorated and the appearance is deteriorated. Since it becomes flat, both absorption performance and appearance are improved. In addition, when the embossing 9 is provided, the body fluid discharged from the local area of the wearer can be once received by the portion surrounded by the embossing and then absorbed in the body fluid absorbing area portion C. Since body fluid concentrates in the body fluid absorption area C of the absorbent body 3 according to the present invention, it is preferable to use a substance having particularly high absorption performance, such as a liquid-absorbent polymer. The specifications of each emboss according to the present invention are preferably in the following ranges (see FIG. 1). <First emboss> Length l ₁ : 1/3 to 2/3 of absorber length 1 embossed wire diameter: 50 to 2000 mmφ <Second emboss> Length l: Absorber length direction total width w ₁ : Absorber width 1/4 to 3/4 of w <Third embossing> Length l ₂ = 1/10 to 1/3 of absorber length 1 Embossing wire diameter: 100 to 300 mm φ Width w ₂ : 10 to 100 mm [Effect 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 has a good absorption of body fluids and a good appearance.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway plan view of a paper diaper according to the present invention, FIG.
FIG. 4 is a sectional view taken along the line II-II, FIG. 3 is an explanatory view of the state of the absorbent body of the disposable diaper according to the present invention at the time of wearing, and FIG. 1 ... Liquid-permeable top sheet, 2 ... Liquid-impermeable back sheet, 3 ... Absorber, 4 ... Elastic expansion / contraction band, 7 ... First embossed wire, 8 ... Second embossed wire, 9 ... … The third embossed line.

Claims (1)

(57) [Claims] In a disposable paper diaper having an absorbent body for body fluid interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, a second embossed line extending in the longitudinal direction is formed inside both side edges of the absorbent body, A body fluid absorption region is formed in the central portion in the longitudinal direction of the absorbent body, where the first embossed lines are formed to be continuous with the second embossed lines, and the center in the width direction is directed toward the center, and the first embossed lines do not intersect. Disposable disposable diaper characterized by being formed.