JP2578604Y2 - Paper diapers - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper which prevents a slippage on the abdominal side without impairing a feeling of wearing when used.

[0002]

2. Description of the Related Art A disposable diaper conventionally used is provided with a fastening tape on both sides on the back side of the disposable diaper so as to be worn on a wearer. After each contact with the wearer, the fastening tape is brought to the abdomen and fastened to a fastening tape fixed directly on the top sheet of the abdomen or on the top surface thereof to fix the disposable diaper. .

An elastic band is provided around the waist in order to prevent the slippage from being displaced from the wearing state. The elastic band is tightened on the body side by the contraction force, and the stiffness of the whole disposable diaper is increased. In addition, a method such as embossing is applied over the entire range of the liquid-permeable sheet covering the absorber.

[0004]

However, as described above, when embossing is formed over the entire range of the liquid-permeable sheet covering the absorber, rigidity is given to the entire disposable diaper,
Although the shape in the mounted state is retained, it is effective in preventing slippage, but for the wearer, the strong stiffness of the absorber from the crotch to the back gives a feeling of stiffness, making the feeling of wearing extremely poor I was On the other hand, in fact, offset off of disposable diapers, since Dzu hesitation slipping is caused by the protruding buttocks for dorsal, only abdomen it becomes a problem. In particular, babies and infants in high demand have a swelled abdomen, which is a so-called infant body, so that the slippage on the abdomen becomes even more problematic.

Accordingly, a main object of the present invention is to provide a disposable diaper which does not impair the wearing feeling of a wearer and prevents slippage particularly on the abdominal side.

[0006]

The above object is achieved by interposing a liquid-permeable sheet on the front side, a liquid-impermeable sheet on the rear side, and the liquid-permeable sheet and the liquid-impermeable sheet. In a disposable diaper composed of an absorbent body, a liquid-permeable sheet portion covering at least the absorbent body or an upper, inner or lower part of the absorbent body in a range of 50 mm to 250 mm from the abdominal edge position of the absorbent body to the crotch side. It can be solved by embossing. Further, in the range of 50 mm to 250 mm from the abdominal edge position to the crotch side of the absorber,
A water-soluble polymer solution may be sprayed at least inside the absorber.

[0007]

According to the present invention, the abdominal area in the liquid-permeable sheet of the disposable diaper, specifically, the range of 50 mm to 250 mm from the abdominal edge position of the absorbent body to the crotch side, at least the absorbent body Embossing is applied to the upper, inner or lower part of the liquid permeable sheet portion or the absorber to be covered, or a water-soluble polymer solution is sprayed inside the absorber, so that only the abdominal portion is stiffened, without compromising the fit is no longer with Gois in the portion extending back from, so that in particular can be prevented from slipping down in the belly side that has become a problem. In addition, in order to prevent the slippage on the ventral side, as a result of the examination, it is necessary to give stiffness to at least a range of 50 mm or more from the ventral edge position of the absorber to the crotch side, and It was regulated to within 250 mm so as not to impair the feeling of wearing and feeling to the skin.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments. In FIG. 1, the disposable diaper of the present invention includes a liquid-impermeable sheet 1 made of polyethylene or the like, a liquid-permeable sheet 2 made of a nonwoven fabric or the like, and a liquid-permeable sheet 2 between the liquid-impermeable sheet 1 and the liquid-permeable sheet 2. Consisting of cottony pulp etc.,
For example, the absorber 3 has a rectangular or hourglass shape and has some rigidity.

An elastic stretch band made of urethane foam is interposed between the liquid-impermeable sheet 1 and the liquid-permeable sheet 2 at the abdominal and dorsal edges. Fixing tapes 6, 6 are fixed to the portions, respectively. The absorber 3 can be wrapped with absorbent paper (not shown) to maintain its shape.

The liquid-impervious sheet 1 extends outward from the periphery of the absorber 3 and has an hourglass shape, and a laterally extending portion thereof includes a barrier sheet 4 and a liquid-permeable Together with the side portions of the seat 2, a flap portion F is formed. The liquid-permeable sheet 2 has a rectangular shape, extends slightly outward from the side edge of the absorber 3 in the leg area, and is fixed to the liquid-impermeable sheet 1 with a hot melt adhesive or the like. As a material for forming the barrier sheet 4, a plastic sheet may be used. However, a nonwoven fabric obtained by subjecting a nonwoven fabric to a water-repellent treatment with silicon or the like is preferably used in terms of skin feel. On both sides of the disposable diaper, barrier cuffs B, B projecting toward the use surface side are formed. As shown in the figure, the barrier cuff B has a barrier sheet 4 which is substantially continuous in the width direction and is folded inward to form a double layer. A plurality of elastic elastic members are fixed, and the barrier cuffs B are erected. Further, on the outer portion of the barrier cuff 4, for example, four elastic elastic members 7, 7,... For gasket cuffs are fixed to the liquid impermeable sheet 1 by a hot melt adhesive or the like. The barrier cuffs B, B
The substantially trapezoidal space of the upper opening, which abuts around the wearer's leg and is surrounded by the barrier cuffs B, B and the liquid-permeable sheet 2, forms a confined space for urine or loose stool.
When urine is discharged into this space, the urine passes through the liquid-permeable sheet 2 and is absorbed into the absorber 3, and the barrier cuffs B, B of the soft stool solids are barriers (barriers)
It is prevented from getting over. Even if urine leaks laterally over barrier cuffs B, B,
The gasket cuff formed by the elastic members 7, 7 ... prevents lateral leakage. Reference numeral 9 denotes an elastic elastic member for maintaining the shape used to form the absorbent body 3 into a boat shape. The elastic elastic member 9 allows the absorbent body 3 having a certain rigidity to be folded into a boat shape when the disposable diaper is worn. Can be held in a shape that fits the body of the user.

On the other hand, in the disposable diaper according to the present invention,
In particular, to prevent slippage on the ventral side when worn,
In the range indicated by oblique lines, specifically, from 50 mm to 250
In the range L of mm, at least the portion of the liquid-permeable sheet 2 covering the absorber 3 or the upper, inner or lower part of the absorber 3 is preferably embossed in a scattered point shape. In the abdominal area defined by the dimension L, the barrier sheet 4 (including the flap portion F) as well as the liquid-permeable sheet 2 covering the absorber 3 can be embossed.

The embossing pattern to be applied may be any desired shape, such as the rhombus shape shown in FIG. 2 and the circular shape shown in FIG. 3. In order to give a paper diaper a predetermined moderate stiffness (rigidity), One embossed shape has a horizontal dimension a of 5 to 15 mm, preferably about 10 mm, and a vertical dimension b of 5 to 1 mm.
It is 5 mm, preferably around 10 mm. The scattering density is 25 to 200 (２００ / 10 × 10 cm ² ), and the pressing force is 30.
The pressing force is 0 to 750 kg / cm ² , preferably about 500 kg / cm ² . In order to enhance the spot absorbability, the liquid permeable sheet 2 and the absorber 3 may be integrally embossed so as not to form a large gap between the liquid permeable sheet 2 and the absorber 3. .

As another method of imparting stiffness only to the abdomen of the disposable diaper, a water-soluble polymer solution can be sprayed on the region inside the absorber 3. As the water-soluble polymer, polyvinyl alcohol (PV
A), cellulose derivatives such as carboxymethylcellulose (CMC), hydroxyethylcellulose (HEC) and methylcellulose, dextrins, starches such as etherified starch, oxidized starch and esterified starch, sodium alginate and the like can be used. From the viewpoint of sprayability , an aqueous solution having a concentration of 0.5 to 2 %, preferably about 1% is suitably used, and the basis weight thereof is within a range that can prevent slippage without impairing the feeling of wearing, and is set per paper diaper. 2 to 5 g / sheet, preferably 4 g /
It is about the number of sheets.

When embossing the liquid permeable sheet 2, for example, as shown in FIG.
In the assembling step of sequentially supplying the absorbents 3 and 3 to the assembling station P and supplying the liquid-permeable sheet 2, an embossing machine 11 is provided in the middle of the liquid-permeable sheet 2 supply line. Do. The embossing machine 11
Is a metal roll 11a having an uneven surface for forming an emboss of a predetermined shape on the surface thereof;
An elastic roll 11b is provided to face the liquid-permeable sheet 2 guided therebetween. In the present invention, since the emboss is formed only on the liquid-permeable sheet 2 in the range L of 50 mm to 250 mm from the abdominal edge position of the absorber 3 to the crotch side,
The metal roll 11a is made to be able to contact and separate from the liquid-permeable sheet 2, and embossing is performed only in a predetermined range by an intermittent operation in which contact and separation are repeated at predetermined time intervals.

On the other hand, FIG.
This is a method for spraying inside, but in this case as well, since spraying is performed only in the predetermined range, the spray nozzle 1
The water-soluble polymer solution is sprayed intermittently from 2.

[0016]

[Effects of the Invention] As described in detail above, according to the present invention, since the waist is applied only to the ventral side of the disposable diaper, it is possible to prevent the slippage especially on the ventral side without impairing the wearing feeling of the wearer. it can.

[Brief description of the drawings]

FIG. 1 is a development view of a disposable diaper according to the present invention.

FIG. 2 is a diagram illustrating an example of an emboss pattern.

FIG. 3 is a diagram showing an example of another emboss pattern.

FIG. 4 is an embossing procedure diagram.

FIG. 5 is a diagram of a spraying procedure of a water-soluble polymer solution.

[Explanation of symbols]

1 ... liquid-impermeable sheet, 2 ... liquid-permeable sheet, 3 ... absorber,
4: barrier sheet, 5, 7, 9: elastic elastic member, B:
Barrier cuffs, F ... flaps

Claims (2)

(57) [Scope of request for utility model registration] 1. A disposable diaper comprising a liquid-permeable sheet on the front side, a liquid-impermeable sheet on the back side, and an absorber interposed between the liquid-permeable sheet and the liquid-impermeable sheet. In the above, 50mm from the ventral edge position of the absorber to the crotch side
A disposable diaper in which at least a liquid-permeable sheet portion or an upper part, an inner part, or a lower part of the absorber in the range of 250 mm that covers the absorber is embossed. 2. A disposable diaper comprising a liquid-permeable sheet on the front side, a liquid-impermeable sheet on the back side, and an absorber interposed between the liquid-permeable sheet and the liquid-impermeable sheet. In the above, 50mm from the ventral edge position of the absorber to the crotch side
A disposable diaper in the range of 250 mm, wherein a water-soluble polymer solution is sprayed at least inside the absorber.