JP2582180Y2 - 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 for reinforcing the abdomen and in particular for preventing urine from flowing to the abdomen.

[0002]

2. Description of the Related Art The so-called stiffness of an absorber in a disposable diaper of this type is a factor that enhances its shape retention and urine absorption. Therefore, it is conventionally known to form an emboss on a part of the absorber.

[0003]

However, since the conventional emboss is formed only on a small part of the absorber, it may be effective in terms of shape retention, but it may be effective in absorbing urine. It is not enough in terms of the effect of enhancing sex.

[0004] Therefore, the present inventor has found that the formation of embossment on almost the entire absorbent body enhances urine absorption.

[0005] In this case, if the emboss formed on almost the entire surface of the absorber is excessively strong in terms of the overall balance, on the contrary, the emboss density and the emboss density are increased to impair the feeling of wearing. The depth cannot be increased. On the other hand, infants often sleep prone. In this case, since a large force acts on the abdominal portion, a relatively weak emboss has difficulty in shape retention and the like. Further, since the emboss is on the entire surface of the absorber, there is a high risk of urine flowing out to the abdomen. Even if a so-called waistband is provided on the abdomen, it is mainly for the purpose of preventing slippage, so that it is not possible to reliably prevent urine from flowing out to the abdomen.

Accordingly, a main problem of the present invention is to prevent urine from flowing out to the abdomen.

[0007]

The object of the present invention is to provide a liquid-permeable sheet on the front side, a liquid-impermeable sheet on the back side, and a liquid-permeable sheet interposed between the liquid-permeable sheet and the liquid-impermeable sheet. In a disposable diaper having an absorber, the problem can be solved by forming a corrugated emboss over at least 50 mm in the width direction on the ventral side of the absorber.

In this case, it is preferable that the waveform emboss is continuous. It is preferable that a urine diffusion emboss in the longitudinal direction is formed along the longitudinal direction of the disposable diaper from the abdominal side to the dorsal side, and is separated from the corrugated emboss without intersecting with the corrugated emboss.

Further, it is more preferable that a lattice-shaped emboss is formed as a whole from the center side to the back side apart from the corrugated emboss, and a urine diffusion emboss is formed in the lattice-shaped emboss formation region. It is.

[0010]

In the present invention, a corrugated and preferably continuous corrugated emboss is formed over at least 50 mm in the width direction on the ventral side of the absorber. Therefore, the stiffness of the whole width direction on the abdomen is strengthened, and especially in the case of prone sleeping, even if urine shifts to the abdomen due to compression of the absorber, it is spread in the width direction at the waveform embossed portion. As a result, urine is absorbed into the absorber during the diffusion process, so that the outflow of urine from the abdominal edge is prevented.

Furthermore, when the entire lattice-shaped emboss is formed from the center side to the back side, the stiffness of the entire absorber is strengthened. However, the presence of the lattice-shaped emboss makes it easier for urine to flow out of the abdomen, but the presence of the waveform emboss prevents the urine.

When the urine diffusion embossing in the longitudinal direction is formed along the longitudinal direction of the disposable diaper from the ventral side to the dorsal side, the urinary diffusivity in the front-rear direction is improved, and as a result, the urine absorption is enhanced. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments. In FIG. 1, a disposable diaper comprises a liquid-impermeable sheet 1 made of polyethylene or the like and a liquid-permeable sheet 2 made of nonwoven fabric or the like.
And an absorbent body 3 made of cotton-like pulp and having a certain rigidity, for example, a rectangular or hourglass shape, interposed between the liquid-impermeable sheet 1 and the liquid-permeable sheet 2
It is composed of Further, the edges of the abdominal side F (lower side in FIG. 1) and the back side B (upper side in FIG. 1) are made of urethane foam or the like between the liquid-impermeable sheet 1 and the liquid-permeable sheet 2. Elastic elastic bands 8 are interposed, and fastening tapes 6 are fixed to both sides on the back side, respectively.

The liquid-impervious sheet 1 extends outward from the periphery of the absorber 3 and has an hourglass shape. 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 the other hand, on both sides of the disposable diaper, barrier cuffs B, B protruding toward the use surface side are formed. As shown in the figure, the barrier cuffs B are formed by folding the barrier sheet 4 substantially continuous in the width direction inward and forming a double sheet, and one elastic elastic member 5 or If necessary, a plurality of elastic elastic members are fixed, and the barrier cuffs B are raised.

The outer portion of the barrier cuff B has
For example, four elastic elastic members 7, 7 for gasket cuffs
Are fixed to the liquid impermeable sheet 1 with a hot melt adhesive or the like.

The barrier cuffs B, B abut around the leg of the wearer, and the barrier cuffs B, B and the liquid permeable sheet 2
When the urine or loose stool is confined, the urine passes through the liquid-permeable sheet 2 and passes through the absorber 3.
As for the loose stool solids, the barrier cuffs B, B serve as a barrier (barrier), and are prevented from getting over. Even if urine leaks laterally over the barrier cuffs B, B, the elastic elastic member 7,
The gasket cuffs formed by 7 prevent 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.

Such a configuration is basically known.
In the present invention, as shown in FIG. 2 which is a plan view showing only the absorber 3, an oblique lattice-shaped stiffening embossing 31 is formed at the center in the width direction of the absorber 3 over the entire longitudinal direction. In the middle, the stiffening embossment 31 is interrupted, and at this interrupted portion, a waveform emboss 32 for preventing urine leakage is continuously formed in the width direction. Further, a urine diffusion emboss 33 is formed at the center in the width direction of the absorber 3 along the longitudinal direction, and an inverted U-shaped portion 33A is formed at the abdominal end thereof. The urine diffusion emboss 33 and the inverted U-shaped portion 33A are separated from the stiffening emboss 31.

In the absorber configured as described above,
The lattice-shaped stiffening embossing 31 enhances the stiffness of the absorber 3 and improves the shape retention. Moreover, urine absorption is also enhanced.

The urine diffusion emboss 33 diffuses and guides the received urine in the front-rear direction of the absorber 3 (in other words, the disposable diaper).
It acts as a whole to absorb urine, thereby increasing the rate of absorption. The inverted U-shaped portion 33A has a function of stopping the spread urine there.

Now, the waveform emboss 32 for preventing urine leakage according to the present invention has a wall-like function of reinforcing the abdominal part and preventing urine transmitted through the stiffening emboss 31 and the like. That is, if the waveform emboss 32 for preventing urine leakage
Even when the urine reaches the urine, the urine is diffused in the width direction of the absorber 3 and is absorbed into the absorber 3 during the diffusion process. Therefore, even in the case of prone sleeping, outflow of urine to the ventral side is prevented.

Numeral 34 denotes an absorber 3 around the leg when worn.
Is an emboss for improving fit formed so as to fit more.

FIG. 3 is a detailed view of a main part of a mold 3A for forming each of the above embosses.

In the present invention, the waveform emboss 32 for preventing urine leakage is preferably continuous for the purpose of absorbing urine in the process of spreading in the width direction, and its length L is preferably 50 mm or more. Required. The total height W of the waves is preferably 5 to 20 mm. The pitch P is 20
~ 60mm is desirable. The waveform can be a sine curve or the like. The distance D from the abdominal edge of the absorber 3 at the position where the waveform emboss is formed is preferably 20 to 40 mm.

As shown in FIG. 4, the emboss may be formed by stacking a plurality of parallel unit embosses.
Also in this case, the preferable range of the total height W is the same. As shown in FIG. 5, the waveform embossments may be discontinuous. Further, a discontinuous aspect of the shape shown in FIG. 6 can be assumed. However, if the embossing is discontinuous, there is no problem in terms of strengthening the stiffness, but the urethane has poor diffusibility in the width direction, which is not preferable. Also, considering only the urinary diffusivity in the width direction, although the embossing may be simply a straight line in the width direction, the waveform is more advantageous in that it can enhance the stiffness in both the width direction and the front-back direction at once. Much better.

The depth of the emboss 32 is preferably 1 to 2 mm. The emboss width is preferably 0.3 to 3 mm. The same applies to the other embosses 33, 33A, 34. However, since the lattice of the emboss 31 is small, both the depth and the width may be smaller. The width q of the lattice (FIG. 3) is preferably 5 to 30 mm.

[0026]

As described in detail above, according to the present invention, it is possible to prevent urine from flowing out to the ventral side, and it is also possible to strengthen the stiffness of the ventral part.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the absorber.

FIG. 3 is a plan view of a main part of an embossing mold.

FIG. 4 is a schematic plan view of another emboss formation mode.

FIG. 5 is a schematic plan view of another emboss formation mode.

FIG. 6 is a schematic plan view of an emboss formation mode shown as a reference example.

[Explanation of symbols]

1 ... liquid-impermeable sheet, 2 ... liquid-permeable sheet, 3 ... absorber,
4. barrier sheet, 5.7.9, elastic member, 31
... embossed stiffness embossing, 32 ... waveform embossing for preventing urine leakage, 33 ... embossing for urine diffusion.

Claims (4)

(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 rear side; and an absorber interposed between the liquid-permeable sheet and the liquid-impermeable sheet. A disposable diaper characterized by forming a corrugated emboss over at least 50 mm in the width direction on the ventral side of the absorber. 2. The method according to claim 1, wherein said waveform embossing is continuous.
The paper diaper described. 3. A urine diffusion embossment is formed in a longitudinal direction along the longitudinal direction of the disposable diaper from the abdominal side to the dorsal side, and is spaced apart from the corrugated embossment.
The paper diaper described. 4. The embossment for urine diffusion according to claim 3, wherein a lattice-shaped emboss is formed entirely from the center side to the back side apart from the corrugated embossment, and a urine diffusion emboss is formed in the lattice-shaped emboss formation region. Paper diapers.