JPH11347064A - Disposable paper diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve side leak prevention effect of a disposable paper diaper. SOLUTION: This disposable paper diaper has an absorptive body 3 disposed between a liquid permeable top sheet 1 and a liquid impermeable back sheet 2, at least an elastic extensible member 6 for a gasket cuff along the longitudinal direction in a crotch corresponding part and an elastic extensible member 22 in the vicinity of the tip end, a second barrier cuff 20 standing up to the user in wearing by the contracting force of the elastic member, an elastic extensible member 12 in the vicinity of the tip end to the center side in the width direction of the article than the second barrier cuff 20, and a first barrier cuff 10 to stand up to the wearer in wearing by the contraction force of the elastic member. A barrier sheet to constitute the first barrier cuff 10 and a barrier sheet to constitute the second barrier cuff 20 are formed commonly from a sheet 41. The intermediate part of the common sheet in the width direction is fixed to the article material and a free part of the first barrier cuff 10 is formed to the inside in the article width direction than the fixed part and a free part of the second barrier cuff to the outside in the article width direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable disposable diaper, for example, a disposable disposable diaper to be attached using a pants type such as training pants or a binding tape.

[0002]

2. Description of the Related Art Disposable disposable diapers, especially training pants, are used to promote disposable diapers during the transition from infants to infants.

Various proposals have been made for this type of pants-type disposable diaper or disposable diapers using a bonding tape.

[0004] In any disposable diaper, it is a necessary property of the product to prevent leakage of bodily fluid from around the waist, and in order to prevent lateral leakage of loose stool, in recent years, it has been widely used to form a barrier cuff. It has been.

[0005] In many products currently on the market, the barrier cuff is one on each side.
No. 901 and Utility Model Registration No. 2523726 propose to provide two barrier cuffs on each side.

[0006]

However, it has been found that even if two barrier cuffs are simply provided on each side, the barrier leakage is more effective than one barrier cuff, but the effect is not necessarily remarkable.

Accordingly, an object of the present invention is to provide a disposable diaper having a remarkable effect of preventing lateral leakage.

[0008]

Means for Solving the Problems According to the first aspect of the present invention which has solved the above-mentioned problems, an absorbent is provided between a liquid-permeable top sheet and a liquid-impermeable back sheet. In a disposable diaper having barrier cuffs on both sides,
(1) An elastically deformable region outside the both side edges of the absorber and along the longitudinal direction at least in a region corresponding to the crotch portion; an elastic elastic member for gasket cuffs and an elastic elastic member near the front end are provided. And having a second barrier cuff that stands on the wearer side when worn due to its contraction force,
(2) At least in the crotch-equivalent region, along the longitudinal direction, at the center of the product in the product width direction from the second barrier cuff, an elastic elastic member is provided near the tip, and stands up to the wearer side at the time of wearing due to the contractive force. (3) A barrier sheet constituting the first barrier cuff and a barrier sheet constituting the second barrier cuff are formed of one common sheet, and the width direction of the common sheet is A disposable paper diaper having an intermediate portion fixed to a product material, a free portion of a first barrier cuff formed inside the fixed portion in a product width direction, and a free portion of a second barrier cuff formed outside a product width direction. It is.

According to the second aspect of the present invention, the upright line from the easily deformable region of the second barrier cuff is located closer to the center in the product width direction than the widthwise middle of the contraction force acting region of the elastic elastic member for the gasket cuff. A disposable paper diaper according to claim 1.

According to a third aspect of the present invention, the gasket cuff elastic elastic member includes a plurality of gasket cuff elastic members at intervals in the width direction. The disposable paper diaper according to claim 1, wherein the barrier cuffs have standing lines.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to embodiments shown in the drawings.

FIGS. 1 and 2 show an embodiment of a pants-type disposable diaper according to the present invention, wherein a liquid-permeable top sheet 1 made of a nonwoven fabric or the like and a liquid-impermeable back sheet made of a polyethylene sheet or the like. 2 and absorber 3
The absorbent element 4 wrapped around the main body backsheet 30
It is provided in.

The main body back sheet 30 is a continuous sheet that defines the overall shape over the entire outer surface of the final product. For example, the main body back sheet 30 is made of a material that exhibits elasticity in at least one of the front-rear direction and the width direction. The degree of stretching is 150% or more. Body backsheet 30 in the embodiment
Is shaped like an hourglass. It is desired that the main body back sheet has at least one of air permeability and waterproofness (water repellency), more preferably both properties, from the viewpoint of preventing stuffiness. The material can be appropriately selected, for example, heat-fusing a rayon spunlace nonwoven fabric which is a blend of a polypropylene-based heat-sealing fiber and rayon fiber, and a melt-blown nonwoven fabric mainly comprising a urethane or isoprene rubber-based material, An example in which the nonwoven fabric is integrated by ultrasonic bonding, hot melt adhesive bonding, or the like and the former nonwoven fabric is used on the skin side of the wearer can be given.

A first barrier cuff 10 is formed at the center of the main body back sheet 30 in the product width direction, and a second barrier cuff 20 is formed at the outer side.

The first and second barrier cuffs 1
0, 20 is preferably a first liquid-impermeable or water-repellent first material.
And second barrier sheets 11 and 21. The rising line of the first barrier sheet 11 is located at the side edge of the absorber 3,
The rising line of the second barrier sheet 21 is located outside the side edge of the absorber 3 (ie, in the easily deformable region where the absorber 3 does not exist), and is fixed to the main body back sheet 30 by a hot melt adhesive or the like. ing.

Further, the first and second barrier sheets 1
The elastic cuffs 12 and 22 made of thread rubber and the like are arranged so that the inner portions thereof (hereinafter, the inside and outside directions are referred to as width directions unless otherwise noted) stand on the wearer side. And is fixed by a hot melt adhesive or the like so that the inner portion stands up as a free portion (standing portion) in a worn state. Although the first and second barrier sheets 11 and 21 have reached the front and rear ends of the product, the elastic elastic members 12 and 2 for barrier cuffs are provided.
2 occupies at least the crotch. As can be seen from this example, the first and second barrier cuffs 10, 20 need only be along the longitudinal direction at least in the region corresponding to the crotch portion to prevent lateral leakage.

Before and after the product, waist elastic members 5A and 5B are provided. The waist elastic members 5A and 5B in the illustrated example are band-shaped, and include the liquid-permeable top sheet 1 and the first and second barrier sheets 11,
21, covered by the outer side in the width direction (edge portion of the product)
And both ends in the longitudinal direction (outer parts of the product) are fixed with hot melt adhesive or the like. Therefore, when worn, it functions as a barrier for body fluid (constituting the front and rear gasket cuffs).

As shown in detail in FIG. 2, between the main body back sheet 30 and the second barrier sheet 21, an elastic elastic member 6 for a gasket cuff is provided to hit the wearer's skin in the illustrated example. To soften
A plurality of, specifically, four of them are fixed under stretching by a hot melt adhesive or the like at intervals in the width direction.

The first barrier sheet 11 has an outer portion adjacent to the gasket cuff elastic elastic member 6A located at the center of the gasket cuff elastic elastic members 6, 6... And is fixed to the liquid permeable top sheet 1 and the main body back sheet 30 with a hot melt adhesive or the like. The second barrier sheet 21 partially covers the outer edge of the first barrier sheet 11 and is fixed by a hot-melt adhesive or the like at the covering portion, and the fixed boundary is defined by the rising line of the second barrier cuff 20. And the position of the standing line is
The gasket cuff elastic elastic member 6A is located near the center in the product width direction. Preferably, the position is within 10 mm on the left and right of the elastic elastic member 6A for gasket cuffs.

In the case of the pants type, the disposable diaper having such a configuration is folded back and forth with the horizontal center line of FIG. 1 as a boundary, and the front and rear sides of the main body back sheet 30 are fixed to each other by heat sealing or the like. It will be commercialized. Alternatively, in the case of mounting using a bonding tape, the bonding tape is fixed to both sides of the rear portion of the product to produce the product.

In any case, when mounted from the unfolded state, as shown in the lower part of FIG. 2, the first barrier cuff 10 and the second barrier cuff 20 are respectively contracted by the elastic stretching members 12 and 22 for barrier cuffs. The free part stands up. Since the contraction force of the elastic elastic members for gasket cuffs 6, 6,... (Including 6A) acts, the left portion of the elastic elastic member for gasket cuffs 6A has no absorber 3 and is easily deformed. , It is lifted to the wearer side so as to be more closely attached to the wearer's skin.

As a result, if the first barrier cuff 10
Even if the lengths of the free portions of the second barrier cuff 20 are the same, as shown in the lower part of FIG. 2, the contraction force of the elastic elastic members 6, 6,... The free portion of the two-barrier cuff 20 becomes larger and the upright height h2 of the upright edge from the liquid-permeable topsheet 1 is higher than the upright height h1 of the first barrier cuff 10.

This embodiment provides the following advantages. (1) In addition to the first barrier cuffs 10, the second barrier cuffs 20 enable the second barrier cuffs 20 to prevent body fluids (including loose stool) that could not be prevented by the first barrier cuffs 10.

(2) The free portion of the second barrier cuff 20 rises larger due to the contraction force of the gasket cuff elastic elastic members 6, 6,... (Including 6A), so that, for example, h2> h1 in FIG. Sometimes body fluids (including loose stools) that could not be blocked by the first barrier cuff 10
Is more remarkably exhibited by the second barrier cuff 20.

(3) Since the free portion of the second barrier cuff 20 stands more vertically (refer to FIG. 2), the space or space between the free portion of the first barrier cuff 10 and the free portion of the second barrier cuff 20 is set. (From the unfolded state), the body fluid that cannot be blocked by the first barrier cuff 10 and can be retained therebetween can be held therebetween, and the function of blocking by the second barrier cuff 20 becomes remarkable.

(4) As a result of the above (2) and (3), the contraction force of the barrier cuff elastic elastic member 22 of the second barrier cuff 20 can be reduced, so that it is possible to release the user from excessive pressure on the wearer. .

(5) The gasket cuff elastic elastic members 6, 6 ... (including 6A) are the second barrier cuffs 20.
In addition to enhancing the standing effect of the product, the leg portion of the product can be fitted to the wearer by itself, and even if the body fluid exceeds the second barrier cuff 20, it can be blocked there, and the second barrier cuff 20 can be When moistened with liquid, it prevents further moistening to the outside and enhances moisture resistance. Furthermore, elastic elastic members for gasket cuffs 6, 6,...
Of the first barrier cuff 10 and the free portion of the second barrier cuff 20 do not protrude further outward and protrude. It always stands inward, and performs well as the original barrier cuff function.

(6) By adding the elastic elastic members 6, 6,... For the gasket cuff, the above-mentioned function is fully exhibited, so that the second barrier cuff 10 has the second barrier from the width of the free portion of the first barrier cuff 10. The length of the free portion of the cuff 20 in the width direction can be reduced, the cost hardly increases, and the cost is extremely excellent in view of the balance with the entire function. Specifically, when the width in the width direction of the free portion of the first barrier cuff 10 is 30 to 50 mm, the easily deformable area between the rising line of the first barrier cuff 10 and the rising line of the second barrier cuff 20 Is interlocked with the free portion of the second barrier cuff 20, so that the length of the free portion of the second barrier cuff 20 in the width direction is equal to the first barrier cuff 1
The width can be reduced by 20 to 40 mm from the length of the free portion in the width direction.

(7) By separating the rising line of the first barrier cuff 10 from the rising line of the second barrier cuff 20,
The first barrier cuff 10 and the second barrier cuff 2 are formed by the contraction force of the elastic elastic members 6, 6,... For the gasket cuff.
A pocket (a space between the free portions of the respective barrier cuffs) is formed between the first and second barrier cuffs, and the function of blocking the bodily fluids (including loose stool) that could not be blocked by the first barrier cuff 10 with the second barrier cuff 20 becomes remarkable. . Specifically, it is desirable that the rising line of the first barrier cuff 10 and the rising line of the second barrier cuff 20 be separated by 10 to 40 mm.

<Example of the Present Invention> FIG. 3 shows an example in which the barrier sheet 40 constituting the first barrier cuff 10 and the second barrier cuff 20 of the present invention is formed of one continuous sheet in the width direction. In the second barrier cuff 20,
The barrier sheet 40 is double.

FIG. 4 shows an example in which the barrier sheet 41 constituting the first barrier cuff 10 and the second barrier cuff 20 is formed of one sheet continuous in the width direction. In this example, a liquid-permeable topsheet 1 extends outward from the product, and a barrier sheet 41 is fixed to the topsheet.

(Reference Example) FIG. 5 shows the first barrier cuff 1
The first barrier sheet 11 of the second barrier cuff 20 is fixed thereon.

FIG. 6 shows an example in which the main body backsheet 30 is not provided, the liquid-impermeable backsheet 2 is used as the outer shape of the product, and the first barrier cuff 10 and the second barrier cuff 20 are fixed to this. Thus, in the present invention, the use of the main body back sheet 30 is not essential. Further, as long as the main body backsheet 30 has a liquid-impermeable sheet, the liquid-impermeable backsheet 2 can be omitted. In this case, the main body backsheet 30 itself constitutes the liquid-impermeable backsheet of the present invention.

Returning to FIG. 2, on the other hand, in this example,
The upright line of the second barrier cuff 20 is located at a position corresponding to the gasket cuff elastic elastic member 6A, but the product width direction is closer to the middle of the contraction force action area of the gasket cuff elastic elastic member 6, 6, 6, 6A. As long as it is on the center side, the second barrier cuff 20 basically stands by performing the aforementioned functions.

[0035]

As described above, according to the present invention, the effect of preventing lateral leakage is remarkably exhibited, and the above (1) to (7)
The advantage is brought about.

[Brief description of the drawings]

FIG. 1 is a plan view of an unfolded state before final assembly of a disposable diaper according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view thereof.

FIG. 3 is a partial cross-sectional view showing the first embodiment of the present invention.

FIG. 4 is a partial cross-sectional view showing a second embodiment of the present invention.

FIG. 5 is a partial cross-sectional view showing a reference example.

FIG. 6 is a partial cross-sectional view showing another reference example.

[Explanation of symbols]

1 ... liquid-permeable top sheet, 2 ... liquid-impermeable back sheet,
3 ... absorber, 4 ... absorber element, 6,6A ... elastic elastic member for gasket cuff, 10 ... first barrier cuff, 11
... First barrier sheet, 12 ... Elastic elastic member for first barrier cuff, 20 ... Second barrier cuff, 21 ... Second barrier sheet, 22 ... Elastic elastic member for second barrier cuff, 30 ... Main body back sheet, 40, 41: Common sheet.

Continuation of the front page (72) Inventor Keiko Nukawa 5-1 Kamiyacho, Iyo Mishima City, Ehime Prefecture Daio Paper Co., Ltd.

Claims (3)

[Claims] 1. A disposable diaper having an absorbent body between a liquid-permeable top sheet and a liquid-impermeable back sheet and further having barrier cuffs on both sides of the product. The elastic deformation member for gasket cuffs and the elastic expansion member near the distal end at least along the longitudinal direction at least in a region corresponding to the crotch portion. A second barrier cuff standing on the side, and (2) having an elastically expandable and contractible member in the vicinity of the tip closer to the center in the product width direction than the second barrier cuff along the longitudinal direction at least in the crotch portion equivalent area, A first barrier cuff that stands on the wearer side when worn by the contraction force; and (3) a barrier sheet and the second barrier cuff that constitute the first barrier cuff. And a barrier sheet to be formed from a single sheet in common, the widthwise intermediate portion of the common sheet is fixed to the product material, and the free portion of the first barrier cuff is inserted inward in the product width direction from the fixed portion. A disposable disposable diaper having a free portion of a second barrier cuff formed outward in the direction. 2. The disposable device according to claim 1, wherein the rising line from the easily deformable region of the second barrier cuff is located at the center in the product width direction from the widthwise middle of the contraction force acting region of the elastic elastic member for the gasket cuff. Paper diapers. 3. The gasket cuff elastic elastic member includes a plurality of elastic elastic members at intervals in the width direction, and a second elastic elastic member for the gasket cuff located closest to the center in the product width direction.
The disposable disposable diaper according to claim 1, wherein there is a standing line of the barrier cuff.