JPH05300922A - Paper diaper - Google Patents

Abstract

PURPOSE:To provide the structure for executing effectively water absorption to a water absorber in a paper siaper and dispersion of the absorbed water, and the structure for making the wearing sense satisfactory. CONSTITUTION:In the paper diaper 1 formed by interposing a water absorber 4 between the reverse side sheet 2 of water non-permeability and a surface sheet 3 of water permeability, plural linear embossed patterns 6 inclined toward the diaper center part are formed by plural lines at a prescribed interval and in parallel in a longitudinal direction, and also, at a prescribed interval in a lateral direction, in the water absorber 4. Also, the constitution in which the crotch part is formed by a contracted part 5 formed from continuous circular arcs of circular arcs having the same radius on a rear side and circular arcs having the same radius connected by a straight line to a front side is provided.

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 structure for effectively absorbing and dispersing moisture in a moisture absorber in the diaper and a structure for providing a comfortable fit.

[0002]

2. Description of the Related Art Paper diapers are widely used not only for infants but also for adults to care for the bedridden elderly and sick. However, as compared with the baby diaper for infants, there are specific problems that a baby diaper for infants does not have, such as a large amount of urination or defecation per one time and a significantly larger body than an infant.

An adult paper diaper, like a baby diaper for infants, has a rectangular flat plate shape requiring a diaper cover,
They are roughly classified into pants-type ones that do not require a diaper cover. All three layers are a water-impermeable back sheet, a water-permeable top sheet, and a moisture absorber interposed between these two sheets. It is constructed based on the structure.

The water impermeable back sheet is a plastic film such as polyethylene or polyester. The water absorber is a structure composed of cotton-like pulp and tissue paper, and in some cases, a super-absorbent polymer is dispersed inside. In recent years, there is an example in which the moisture absorber is embossed for the purpose of keeping the moisture absorber in a certain shape. The water-permeable topsheet is a non-woven fabric such as rayon, polypropylene, polyester fiber or the like.

The flat paper diaper is a mere rectangle, and the pants-type diaper has only the crotch part cut off, and no sufficient measures have been taken to improve the wearing comfort.

[0006]

Therefore, in the conventional disposable diaper, since the adult has a larger amount of discharged waste per one time than the infant, it cannot be effectively dispersed in the moisture absorber in the diaper. That is, when urinating, the urine is absorbed by the water absorber only in the relevant part,
As a result of exceeding the water absorption allowable amount of the site, a sticky feeling and leakage to the outside often occur.

Further, in the conventional embossed product, since the end portions of the adjacent emboss patterns are located at substantially the same position in the lateral width direction, the portions are tightly tightened, and as a result, the moisture absorber is hardened. There are many cases, and the flexibility and fit that make the product more comfortable to wear are lost. Further, since the amount of discharged paper diapers for adults is large, it is not possible to maintain the shape of the water absorbent body after absorbing the water, and it often loses its shape. Further, even the conventional type has a defect that the wearing feeling, particularly the crotch, is poor even if it is a pants type.

In view of the above circumstances, the present invention provides a structure for effectively dispersing the water discharged into the diaper and absorbing it in the water absorbent body, and a structure of a paper diaper that provides a comfortable fit. ..

[0009]

A paper diaper according to the present invention is a paper diaper having a moisture absorbent body interposed between a moisture impermeable back sheet and a moisture permeable top sheet. The present invention provides a configuration in which a plurality of linear embossing patterns inclined toward the center of a diaper are formed in parallel in the length direction at a predetermined interval and in a plurality of rows at a predetermined interval in the lateral width direction. Then, the embossing pattern is formed on a moisture-permeable surface sheet together with the moisture absorber, the embossing pattern is composed of a main body portion having a straight line, and end portions protruding from both ends thereof in mutually opposite directions substantially orthogonal to each other. The emboss patterns are formed so that the inclination directions are different from each other in the adjacent lateral width directions, and the positions of the end portions of the emboss patterns are displaced from each other in the adjacent lateral width directions.

Further, a crotch portion is formed at a substantially central portion of the water absorbent body by a constriction portion formed by a continuous arc having the same radius on the rear side and an arc having the same radius connected by a straight line to the arc and the front side. The configuration and the rear side arc are approximately 1/6 arc and approximately 4 arcs.
A configuration is provided in which the one-half arc is continuous, and the front-side arc is a substantially one-sixth arc that is connected to the rear-side approximately one-quarter arc by a straight line.

[0011]

According to the present invention having the above-described structure, since the dispersion passage is formed between the emboss patterns and the dispersion passage is inclined toward the central portion of the disposable diaper, the discharged water is prevented from moving forward, backward, left and right of the disposable diaper. It is appropriately diffused and absorbed evenly by the moisture absorber. In addition, since the positions of the end portions of the embossed pattern are displaced from each other in the adjacent lateral width direction,
The moisture absorber does not become hard, and a comfortable fit that fits the body can be obtained. Furthermore, the embossed pattern eliminates the loss of shape before use as well as after water absorption, which facilitates handling. In addition, the crotch has a special shape, so it fits well on the legs and waist and does not leak water.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an entire rectangular adult paper diaper 1, which has a width of about 33 cm and a length of about 75 cm, and has a water-impermeable back sheet 2 and a water-permeable top sheet 3, respectively. And a moisture absorber 4 interposed between the two sheets 2 and 3 of FIG.

The water impermeable back sheet 2 is a plastic film such as polyethylene or polyester, or a waterproof and volatile non-woven fabric or a non-woven fabric coated with a waterproof coat such as polyethylene. The moisture absorber 4 is a structure made of cotton-like pulp and tissue paper, and may have super-absorbent polymers scattered therein. The moisture-permeable topsheet 3 is a non-woven fabric such as rayon, polypropylene, polyester fiber or a perforated film. A crotch region including constricted portions 5 and 5 is formed at a substantially central portion of the water absorbent body 4.

A plurality of embossing patterns 6 by embossing are applied to the moisture absorber 4 or both the moisture absorber 4 and the surface sheet 3 from the front side F to the rear side R in a state of being inclined toward the center of the diaper. Has been done. The front side F and the rear side R of the emboss pattern may be reversed in the longitudinal direction. What is necessary is just to incline toward the central part.

As shown in FIG. 2, the embossed pattern 6 has Z-shaped convex portions continuously formed at regular intervals in the longitudinal direction and the width direction, and changes its direction for each row in the width direction. It has a zigzag pattern. Then, based on the four embossing patterns 6 in the length direction shown in the drawing, an appropriate number of them are extended in the front-rear, left-right direction according to the size of the user (adult, infant) and product. This embossed pattern 6
Is formed by rolling with a known embossing roll having a plurality of convex patterns on the circumferential surface.

The end portions 7, 7 projecting from both ends of the main body portion 8 of the embossed pattern 6 in the directions substantially opposite to each other.
Extend in a direction parallel to the main body portion 8 of the embossing pattern 6 in the adjacent row, and therefore the end portions 7, 7 at both end portions are parallel to each other and the end portion 7 bent from the main body portion 8 at a predetermined angle. The positions of the corners 9 and 9 are substantially on the same straight line in the longitudinal direction as those of the adjacent rows, but are displaced from each other in the lateral width direction. For example, the distance between the corners 9 is about 25 millimeters, the length of the end portion 7 is about 8 millimeters, the length of the main body portion 8 is about 80 millimeters, and the width W occupied by the embossing pattern 6 is about. The length L is 40 mm and the length L is about 70 mm.

As shown in FIG. 3, the constricted portion 5 continuously forms a substantially one-sixth arc A and a substantially one-quarter arc B on the rear side R, and the substantially quarter. 1 arc B and straight line D
An approximately one-sixth arc C connected by is continuously formed. For example, the radius of each of the arcs A, B, and C is about 60 mm, and the entire length L1 of the constricted portion 5 is about 229 mm. The radiuses of the arcs A, B, C and the length of the straight line D are appropriately selected according to the user and the size of the disposable diaper. However, the radii of the arcs A, B and C are preferably the same.

Therefore, when the paper diaper 1 having the embossed pattern 6 and the constricted portions 5 and 5 is attached and the surface sheet 3 has urine, for example, as shown in FIG. Water flows along the dispersion path 10 between the parts 8 and 8 to the substantially central part of the diaper 1 and each end part 7 prevents backflow and forms a guide for absorption, so that the water content in the left and right and front and rear directions is increased. It is widely dispersed and absorbed by the water absorber 4.

Therefore, it does not absorb only at the urinating site and diffuses, so that no sticky feeling occurs. Also,
The constricted portions 5 and 5 are formed such that the front side is a straight line D with a gentle inclination and the rear side is steeply curved with arcs A and B, so that it is easy to follow the legs and waist, and the wearing feeling is good, and it fits the body. Do not cause leakage of discharged materials. Furthermore, the embossed pattern eliminates the loss of shape before use as well as after water absorption, which facilitates handling.

Needless to say, the present invention can be applied not only to the adult paper diaper of the above embodiment but also to an infant paper diaper. Further, since the embossed pattern 6 according to the present invention has a great shape-preventing action, it can be applied to an absorbent material for vegetables and fresh foods.

[0021]

According to the present invention described above, since a substantially linear parallel and inclined embossing pattern forming a water dispersion path is formed on the surface sheet, the discharged water is discharged. Is appropriately dispersed without being locally biased and widely absorbed by the water absorber. Further, since the emboss patterns are separated from each other and do not overlap with each other, the hardness of the product is not increased by the embossing process, and furthermore, the shape and the deviation of the surface sheet itself can be eliminated.

Furthermore, since the super-absorbent polymer can be fixed to the place where it is sprayed by the emboss pattern, it can be thickly fixed to the place where the water is adsorbed in the water dispersion path. Further, the crotch part formed of a constricted portion formed by an arc and a straight line fits well to the legs and waist of an adult and does not leak moisture or the like to the outside.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention.

FIG. 2 is a development view showing an emboss pattern.

FIG. 3 is a detailed view of one side development of the crotch region.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Paper diaper 2 ... Back surface sheet 3 ... Surface sheet 4 ... Moisture absorber 5 ... Constriction part 6 ... Embossing pattern 7 ... End part 8 ... Main body part 9 ... Corner part 10 ... Dispersing path

Claims (7)

[Claims] 1. A paper diaper in which a moisture absorber is interposed between a moisture-impermeable back sheet and a moisture-permeable top sheet, wherein the moisture absorber has a plurality of slopes toward the center of the diaper. A disposable diaper, characterized in that a plurality of linear embossed patterns are formed in parallel in the lengthwise direction at a predetermined interval and in a widthwise direction at a predetermined interval. 2. The disposable diaper according to claim 1, wherein the embossed pattern is formed on a moisture-permeable surface sheet together with a moisture absorber. 3. The disposable diaper according to claim 1, wherein the embossing pattern includes a main body having a straight line and end portions protruding from opposite ends of the main body in opposite directions. 4. The emboss pattern is formed so that the inclination directions thereof are different from each other in the adjacent lateral width direction.
The disposable diaper described in a few items. 5. The disposable diaper according to claim 3, wherein the positions of the end portions of the embossed pattern are displaced from each other in the lateral direction adjacent to each other. 6. A paper diaper in which a moisture absorber is interposed between a moisture-impermeable back sheet and a moisture-permeable top sheet, wherein a circular arc having the same radius on the rear side is provided substantially at the center of the moisture absorber. The diaper is characterized in that the crotch region is formed by a constriction portion formed by a continuous arc and a circular arc having the same radius connected to the arc by a straight line on the front side. 7. The arc on the rear side is approximately 1/6 arc and approximately 4 arcs.
8. The disposable diaper according to claim 7, wherein one-half circular arcs are continuous, and the front-side circular arc is a substantially one-sixth circular arc connected by a straight line to the rear-side approximately one-quarter circular arc.