JPH08322876A - Throw-away body fluid absorbent wearing article - Google Patents

Abstract

PURPOSE: To prevent the body fluid leakage of a throw-away body fluid absorbent wearing article. CONSTITUTION: The fiber density and/or hydrophilicity in barrier cuff 6 made of nonwoven fabric having a raising property from the front surface on both right and left side parts on the front surface of a throw-away diaper 1 is made low in the outer side part of the thickness direction of the barrier cuff 6 and high in the inner side part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bodily fluid absorbent wearing article such as a disposable diaper or a sanitary napkin.

[0002]

2. Description of the Related Art Conventionally, an article main body having a liquid-permeable core between a liquid-permeable top sheet and a liquid-impermeable back sheet extends to the left and right sides of the article body in the front-rear direction of the body, and Disposable bodily fluid absorbent wearing articles having a barrier cuff having a tendency to stand upright from the upper surface of the main body are well known. Such a barrier cuff prevents excreted body fluid from leaking around the legs, etc., and is made of hydrophobic non-woven fabric or plastic film, and it is liquid-impermeable, liquid-impermeable, or breathable liquid-impermeable. There are many.

[0003]

The barrier cuff of the prior art described above prevents leakage or exudation of body fluid from the inner side surface toward the outer side surface. However, once the fluid has flowed past the barrier cuff, the fluid is repelled and spread by the hydrophobic barrier cuff, which contaminates the skin and clothing. Therefore, according to the present invention, by increasing the fiber density and / or hydrophilicity of the nonwoven fabric forming the barrier cuff from the outer surface of the barrier cuff toward the inner surface, the body fluid flowing out of the barrier cuff can be transferred to the inner surface of the cuff. The challenge is to prevent the skin fluid from getting soiled by the body fluid that has been repelled by the barrier cuff.

[0004]

[Means for Solving the Problems] The present invention provides means for solving the above problems as follows.

According to the present invention, the article main body, in which the liquid-absorbent core is interposed between the liquid-permeable top sheet and the liquid-impermeable back sheet, extends in the front-rear direction of the left and right sides of the body, and It is premised on a disposable body fluid absorbent wearing article provided with a barrier cuff having a tendency to stand upright from the upper surface of the main body.

[0006] Under such a premise, the barrier cuff is constituted by a non-woven fabric in which hydrophilic fibers account for 60% by weight or more, and the fiber density and / or hydrophilicity of the barrier cuff is low at the outer side portion in the thickness direction of the barrier cuff, and
It is a feature of the present invention that the height is increased in the inner portion.

On the premise, the barrier cuff is made of a non-woven fabric, and the fiber density and / or hydrophilicity of the barrier cuff is gradually increased from the outer surface to the inner surface of the barrier cuff. is there.

In the present invention, a plurality of plastic film strips extending in the front-rear direction may be joined in parallel to each other on the inner surface of the barrier cuff with a predetermined gap.

[0009]

In the disposable body fluid absorbent wearing article thus constructed, when the body fluid flowing out beyond the barrier cuff comes into contact with the outer surface thereof, the nonwoven fabric constituting the barrier cuff follows the fiber density gradient and / or the hydrophilicity gradient. It moves toward the inner surface, that is, toward the inside of the worn article, and suppresses the spread of the body fluid that has flowed out.

[0010]

The details of the disposable body fluid absorbent article according to the present invention will be described with reference to the accompanying drawings by taking a disposable diaper as an example.

FIG. 1 is a partially cutaway perspective view of the diaper 1. The diaper 1 includes a diaper body 5 in which a liquid-absorbent core 4 is interposed between a liquid-permeable topsheet 2 and a liquid-impermeable backsheet 3, and front and rear directions on the upper and left side surfaces of the body 5. The pair of barrier cuffs 6 extends. In the main body 5, the front and back sheets 2 and 3 extending from the peripheral edge of the core 4 are watertightly joined to each other. The longitudinal direction of the main body 5 is the front body 8,
It is composed of a back body 9 and a crotch region 10 located between the two body regions 8 and 9, and both left and right edges of the crotch region 10 are cut out in an arc shape. Tape fasteners 11 are attached to the left and right side edges of the back body 9, and the waist elastic members 12 and the leg elastic members 1 are provided at the end edges of the back body 9 and the both side edges of the crotch region 10.
3, each of the elastic members 12 and 13 is attached to the inner surface of at least one of the front and back sheets 2 and 3 and the sheet member 25 described later in a stretched state. Barrier cuff 6
Is a sheet member 25 joined to the upper surface of the diaper 1, and the outer shape of the outer side portion 25C and the front and rear end portions 25A and 25B of this sheet member 25 is the same as the outer shape of the back sheet 3. The outside portion 25C and the end portions 25A, 25
B is joined to the topsheet 2 and / or the backsheet 3 with which they abut. In the sheet member 25, an inner portion 25D located between the end portions 25A and 25B
Defines a barrier cuff 6 which has an elastic member 15 extending in the front-rear direction and which is not joined to any of the front and back sheets 2 and 3 in the crotch region 10.
When the diaper 1 curves inward in the front-back direction as shown in the figure, the elastic member 15 contracts and stands up from the upper surface of the diaper 1. A side edge portion of the crotch region 10 where the back sheet 3 and the sheet member 25 are joined is a leg-surrounding flap 26, which can be closely attached to the wearer's leg by contraction of the elastic member 13.

FIG. 2 is an end view taken along line II-II of FIG.
It In the figure, the outer portion 25C of the sheet member 25 is
Outside the topsheet 2 with a tomelt adhesive (not shown)
It is joined to the side portion and the outer portion of the backsheet 3. Inside part
25D is a barrier cuff 6, which is raised from the upper surface of the diaper 1.
Stand up and face inward of diaper 1 with topsheet 2
An opening pocket 16 is formed. Inside part 25D
The upper edge of the figure is folded so as to surround the elastic member 15.
is there. The sheet member 25 having such a configuration has a basis weight of 10 to 10.
0 g / m²Made of thermoplastic synthetic fiber non-woven fabric
It Its fiber density and / or hydrophilicity is at least
In the barrier cuff 6, at the outer side in the thickness direction
Low and high on the inside, but outside
You can get higher from the side 20 to the inner side 21
Yes. For example, the barrier cuff 6 has such a density gradient.
60% by weight or more of the fibers constituting the non-woven fabric
To hydrophilic fiber, 0.01-0.5g / cm³ Range of
It is preferable to change the density in the surrounding area. Also, Barryaka
When the fiber 6 has a hydrophilic gradient, 2 hydrophobic fibers are used.
~ 20% by weight to improve the diffusion of body fluids
Preferably. The fiber density here is the unit body.
It means the number of fibers contained in a product or unit weight.
In addition, to give a density or hydrophilic gradient to the nonwoven fabric,
Stacking multiple non-woven fabrics with different degrees and hydrophilicity,
They may be fused or bonded intermittently.

FIG. 3 is an end view similar to FIG. 2 and shows an example of an embodiment of the present invention. In this diaper 1, a plurality of plastic film strips 28 extending in the front-rear direction of the diaper 1 and parallel to each other are joined to the inner side surface 21 of the barrier cuff 6, and a cross section in the thickness direction of the strip 28 is shown in the drawing. is there. The width of the strip 28 is 0.2 to 3 mm,
The width of being separated from each other is preferably 0.2 to 5 mm.

In the present invention, known materials can be used for the front and back sheets 2 and 3 and the core 4. In addition to the bonding technique using a hot melt adhesive or the like, a fusion technique for a heat-meltable material can be used for joining the respective members. In order to make the non-woven fabric hydrophilic, it is possible to use an internal treatment technique and / or an external treatment technique of the fiber with a hydrophilic agent.

[0015]

EFFECTS OF THE INVENTION The disposable body fluid absorbent wearing article according to the present invention has a barrier cuff having an erecting tendency from the upper surface of the article having a fiber density and / or a hydrophilic gradient which increases from the outer side to the inner side. Therefore, when the body fluid flowing out beyond the barrier cuff touches the outer side portion of the barrier cuff, it moves toward the inner side portion. Therefore, it helps to solve the problem that the body fluid that has flowed out spreads and stains the wearer's skin.

When the plastic film strips are joined in parallel to the inner portion of the barrier cuff, the exudation of the body fluid inside the barrier cuff from the fiber gap can be suppressed while maintaining the air permeability inside and outside the barrier cuff made of a non-woven fabric. ,
It is possible to reduce the wet feeling when wearing the article. Further, by partially blocking the contact between the hydrophilically treated non-woven fabric and the body fluid inside the cuff, it is possible to suppress the elution of the hydrophilic treatment agent into the body fluid and to help maintain the hydrophilicity of the non-woven fabric for a long time. The body fluid absorbed by the barrier cuff can diffuse along the film strip in the front-rear direction of the article, and the liquid absorbing ability of the barrier cuff can be used over a wide area.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a disposable diaper.

FIG. 2 is an end view taken along line II-II of FIG.

FIG. 3 is an end view similar to FIG. 2, showing an example of an embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disposable diaper (wearing article) 2 Top sheet 3 Back sheet 4 Core 5 Main body 6 Barrier cuff 20 Outside surface 21 Inside surface 28 Band

Claims (5)

[Claims] 1. An article main body having a liquid-absorbent core interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, extending in the front-rear direction of the main body, and extending on the upper surface of the main body. In a disposable bodily fluid absorbent wearing article having a barrier cuff having a tendency to stand, the barrier cuff is constituted by a nonwoven fabric in which hydrophilic fibers account for 60% by weight or more, and the fiber density of the barrier cuff is outside in the thickness direction of the barrier cuff. Low in the section, and
Said article, characterized in that it is raised on the inside. 2. An article main body having a liquid-absorbent core interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and extending in the front-rear direction of the main body, and the upper surface of the main body. In a disposable body fluid absorbent article having a barrier cuff having a propensity to stand up, the barrier cuff is composed of a non-woven fabric, and the hydrophilicity of the barrier cuff is low at the outer side in the thickness direction of the barrier cuff, and is high at the inner side. The article as described above. 3. The article according to claim 1, wherein a plurality of plastic film strips extending in the front-rear direction are joined to the non-woven fabric in parallel to each other on the inner surface of the barrier cuff with a required gap. 4. The barrier cuff according to claim 1, wherein the fiber density and the hydrophilicity are low in an outer side portion and high in an inner side portion in the thickness direction of the barrier cuff. Goods. 5. The article according to claim 1, wherein the barrier cuff has the fiber density and hydrophilicity gradually increasing from the outer surface to the inner surface.