JPH069616U - Disposable diaper - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the outflow of urine to the ventral side and to strengthen the resilience of the absorber. [Structure] A liquid permeable sheet 2 on the front surface side, a liquid impermeable sheet 1 on the back surface side, and an absorbent body 3 interposed between the liquid permeable sheet 2 and the liquid impermeable sheet 1. In the disposable diaper, at least 50 in the width direction on the ventral side F of the absorber 3.
The corrugated embossment 32 over mm was continuously formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disposable diaper for reinforcing the abdomen and particularly preventing the outflow of urine to the abdomen.

[0002]

[Prior art]

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

[0003]

[Problems to be solved by the device]

 However, since conventional embossing is formed only on a small part of the absorber, it may be effective in terms of shape retention, but it is not sufficient in terms of the effect of enhancing urine absorption. Not.

Therefore, the present inventor has found that forming embosses on almost the entire absorbent body enhances the absorbability of urine.

In this case, if the emboss formed on almost the entire surface of the absorbent body is excessively strong in view of the overall balance, on the contrary, the emboss density and the emboss density and It is not possible to increase the emboss depth. Infants, on the other hand, often sleep prone. In this case, a large force acts on the ventral portion, so that relatively weak embossing is difficult in terms of shape retention. Also, since the embossing is on the entire surface of the absorber, there is a high risk that urine will flow out to the ventral side. Even if a so-called waist band is provided on the abdominal side, this is mainly to prevent slippage, so that it is not possible to reliably prevent urine from flowing out to the abdominal side.

Therefore, the main problem of the present invention is to prevent the outflow of urine to the ventral side.

[0007]

[Means for Solving the Problems]

 The above-mentioned problem is a paper diaper having a liquid-permeable sheet on the front surface side, a liquid-impermeable sheet on the back surface side, and an absorber interposed between the liquid-permeable sheet and the liquid-impermeable sheet, This can be solved by forming an emboss over the width direction of at least 50 mm on the ventral side of the absorbent body.

In this case, the embossing is preferably wavy and continuous. Further, it is preferable that a guide embossing in the longitudinal direction is formed along the longitudinal direction of the disposable diaper from the ventral side to the dorsal side, and does not intersect with the corrugated embossing and is spaced apart.

Further, it is more preferable that a lattice-shaped emboss is formed entirely from the center side to the back side while being separated from the corrugated emboss, and the guide emboss is formed in this lattice-shaped emboss formation region. Is.

[0010]

[Action]

 In the present invention, the corrugated and continuous embossment is formed over at least 50 mm in the width direction on the ventral side of the absorbent body. Therefore, the whole body in the width direction on the ventral side is strengthened, and especially in the case of prone bed, even if the absorbent body is compressed and urine moves to the ventral side, the corrugated embossed portion is diffused in the width direction. In the diffusion process, urine is absorbed inside the absorber, and as a result, urine is prevented from flowing out from the ventral edge.

Further, when the lattice-like embossing is formed from the center side to the back side, the rigidity of the entire absorbent body is strengthened. However, the presence of this lattice-shaped embossing facilitates the outflow of urine from the ventral side, but the presence of the above-mentioned corrugated embossing prevents this.

[0012] Further, when the guiding embossing in the longitudinal direction is formed along the longitudinal direction of the disposable diaper from the ventral side to the dorsal side, the diffusibility of urine in the front-back direction is improved, and as a result, the urine absorbability is improved. Increase.

[0013]

【Example】

 Hereinafter, the present invention will be described in detail based on embodiments. In FIG. 1, a paper diaper is a liquid-permeable sheet 1 made of polyethylene or the like, a liquid-permeable sheet 2 made of a nonwoven cloth or the like, and a space between the liquid-permeable sheet 1 and the liquid-permeable sheet 2. And an absorbent body 3 made of, for example, cotton-like pulp and having a certain rigidity, such as a rectangle or a sand timer. Further, on the edges of the abdominal side F (lower side in FIG. 1) and the back side B (upper side in FIG. 1), urethane foam or the like is formed between the liquid impermeable sheet 1 and the liquid permeable sheet 2. Elastic elastic bands 8 and 8 are interposed, and fastening tapes 6 and 6 are fixed to both sides on the back side.

The liquid-impervious sheet 1 extends outwardly from the periphery of the absorbent body 3 to form an hourglass shape, and the laterally extending portions have barrier sheets 4 and liquid-permeable sheets which will be described later. The flap portion F is configured together with the side portion of the elastic sheet 2. The liquid-permeable sheet 2 has a rectangular shape, extends slightly outward from the side edge of the absorber 3 in the leg-surrounding portion, and is fixed to the liquid-impermeable sheet 1 with a hot melt adhesive or the like. As the material for forming the barrier sheet 4, a plastic sheet can be used, but a nonwoven fabric treated with water repellent with silicone or the like is preferably used in terms of the feel of the skin. On the other hand, barrier cuffs B are formed on both sides of the diaper so as to project to the side of the use surface. As shown in the figure, the barrier cuff B is formed by double-folding a barrier sheet 4 which is substantially continuous in the width direction, and is formed into a double layer. If necessary, a plurality of elastic expansion / contraction members are fixed to raise the above-mentioned barrier cuff B. On the outer side of the barrier cuff 4, for example, four gasket elastic cuff elastic members 7, 7 ... Are fixed to the liquid-impervious sheet 1 by a hot-melt adhesive or the like. The barrier cuffs B, B contact the wearer's legs and are enclosed by the barrier cuffs B, B and the liquid permeable sheet 2 by a substantially trapezoidal space of the upper opening to confine urine or loose stool space. When urine is formed in this space, the urine passes through the liquid-permeable sheet 2 and is absorbed in the absorbent body 3. At the same time, as for solid stools, the barrier cuffs B and B are barriers. It becomes a (barrier) and prevents it from being overcome. Even if urine leaks laterally after getting over the barrier cuffs B, B, the lateral leakage is prevented by the gasket cuffs formed by the elastic stretchable members 7, 7. Reference numeral 9 denotes a shape-retaining elastic stretchable member used for forming the absorber 3 into a boat shape. With this elastic stretchable member 9, when the disposable diaper is worn, the absorber 3 having a certain degree of rigidity is bent into a boat shape and worn. It can be held in a shape that fits the person's body.

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, a diagonal lattice-shaped body enhancing emboss 31 is formed in the widthwise center of the absorber 3 over the entire longitudinal direction, and the ventral side portion is formed. In the middle of the process, the stiffness-enhancing embossment 31 is discontinued, and the corrugated embossment 32 for preventing urine leakage is continuously formed in the width direction at the discontinuous part. Further, a urine diffusion emboss 33 is formed along the longitudinal direction at the center of the absorbent body 3 in the width direction, and an inverted U-shaped portion 33A is formed at the ventral end thereof. Further, the urine diffusion emboss 33 and the inverted U-shaped portion 33A are cut off from the stiffness enhancing emboss 31.

In the absorbent body configured as described above, the lattice-shaped stiffness enhancing embossment 31 enhances the stiffness of the absorbent body 3 to improve its shape retention. Moreover, it also increases the absorbability of urine.

The urine diffusion embossing 33 diffuses and guides the received urine to the front and back of the absorber 3 (in other words, a disposable diaper), and functions to absorb the urine as a whole, thereby increasing the absorption speed.

The inverted U-shaped portion 33A has a function of stopping diffused urine there.

The corrugated embossment 32 for preventing urine leakage according to the present invention reinforces the abdominal portion, and acts as a wall for preventing urine that has been transmitted through the firm reinforcement emboss 31 and the like.

That is, even if the urine reaches the urine leakage prevention waveform embossing 32, the urine is diffused in the width direction of the absorber 3, and is absorbed inside the absorber 3 in the process of diffusion.

Therefore, even in the case of prone bed, the outflow of urine to the ventral side is prevented.

Reference numeral 34 is an embossment for improving the fit property, which is formed so that the absorbent core 3 fits more around the legs when worn.

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

In the present invention, the corrugated embossment 32 is preferably continuous for the purpose of absorbing urine in the process of diffusing in the width direction, and the length L thereof is required to be 50 mm or more. The total height W of the wave is preferably 5 to 20 mm. The pitch P is preferably 20 to 60 mm. The waveform can be a sine curve or the like. The distance D from the ventral edge of the absorber 3 at the position where the corrugated 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, it may be discontinuous. The discontinuous mode shown in FIG. 6 may be used. However, discontinuity is not preferable because the dispersibility of urine in the width direction is poor, although there is no problem in terms of strengthening the body. Although it may be a straight line in the width direction, the corrugation is far superior in that it can reinforce the stiffness in both the width direction and the front-back direction at once.

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, and 34. However, since the embossing 31 has a small lattice, the depth and width may be smaller. The width q (FIG. 3) of the lattice is preferably 5 to 30 mm.

[0027]

[Effect of device]

 As described above in detail, according to the present invention, it is possible to prevent the outflow of urine to the ventral side, and at the same time, to strengthen the elasticity of the ventral side.

[Brief description of drawings]

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

FIG. 2 is a plan view of an absorber.

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

FIG. 4 is a schematic plan view of another embossing mode.

FIG. 5 is a schematic plan view of another embossing mode.

FIG. 6 is a schematic plan view of still another embossing mode.

[Explanation of symbols]

1 ... Liquid-impermeable sheet, 2 ... Liquid-permeable sheet, 3 ... Absorber,
4 ... Barrier sheet, 5/7/9 ... Elastic elastic member, 31
... Kosi enhancement embossing, 32 ... Waveform embossing for preventing urine leakage, 33 ... Urine diffusion embossing.

Claims (4)

[Scope of utility model registration request] 1. A paper diaper having a liquid-permeable sheet on the front surface side, a liquid-impermeable sheet on the back surface side, and an absorbent body interposed between the liquid-permeable sheet and the liquid-impermeable sheet, A disposable diaper, characterized in that an embossing having a width of at least 50 mm is formed on the ventral side of the absorbent body. 2. The disposable diaper according to claim 1, wherein the embossing is wavy and continuous. 3. The disposable diaper according to claim 1, wherein a longitudinal guide emboss is formed along the longitudinal direction of the disposable diaper from the ventral side to the dorsal side and does not intersect the corrugated emboss and is spaced apart. 4. The disposable diaper according to claim 3, wherein a grid-like emboss is formed entirely from the center side to the back side apart from the corrugated emboss, and the guide emboss is formed in this grid-like emboss forming region. .