JP2005111181A - Texture with countermeasure against urine leakage, and underwear - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent urine leakage even when a wearing person rolls over concerning a texture with countermeasures against urine leakage and underwear such as a diaper manufactured by using the texture. <P>SOLUTION: The underwear such as the diaper is manufactured through the use of the texture with the countermeasures against urine leakage, where surface textures 11, a water holding layer 12, a water absorbing and diffusing layer 13, and a waterproof texture 14 are arranged in this order. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a urine leakage countermeasure fabric and an underwear such as a diaper manufactured using the urine leakage countermeasure fabric.

For underwear such as diapers for adults and diapers with diaper function, urine does not leak, can be worn for a long time (does not cause stuffiness), and is easy to wear (no movement and easy to move) Various demands have been made. In some cases, it may be required to be able to wash repeatedly.
Conventionally, as this type of underwear, a fabric having a three-layer structure of a surface layer, a water-absorbing layer, and a waterproof layer attached to the inside of the body fabric (see Patent Document 1) is known (hereinafter referred to as “first”). Conventional underwear "). The surface layer is for quickly absorbing urine into the absorbent layer and is made of a mesh knitted fabric or the like. The absorbent layer is for holding urine absorbed from the surface layer, and is made of a fabric containing short fibers such as polyester. The waterproof layer is for preventing urine absorbed in the absorbent layer from leaking to the outside, and is laminated on a synthetic fiber fabric. Since the cloth is provided outside the waterproof layer, it can be said that this part has a four-layer structure as a whole.

As another conventional undergarment, there is known one in which a main part of a body cloth is formed of a cloth having a four-layer structure of a surface water-absorbing layer, a gap retaining layer, a water retaining layer, and a waterproof moisture permeable layer (see Patent Document 2). (Hereinafter referred to as “second conventional underwear”). The surface water-absorbing layer is for quickly absorbing urine so as not to leave a moist feeling on the skin surface, and is made of a polyester fiber cloth or the like. The gap retaining layer is intended to prevent the urine from reversing by keeping the surface absorbing layer and the water retaining layer at regular intervals while quickly guiding the urine from the surface absorbing layer to the water retaining layer. . In addition, it has been used to prevent settling. This gap retaining layer is formed by connecting a surface structure and a lining structure of 100% polyester with nylon warps. The water retaining layer absorbs urine quickly and holds the urine once absorbed inside so as not to escape, and is made of a nonwoven fabric. The waterproof moisture-permeable layer is used to block urine but allow moisture to pass through, and is made of a polyurethane film.
JP-A-10-113358 JP 2000-5208 A

In the first conventional undergarment described above, a waterproof layer is provided directly on the outside of the absorption layer for absorbing and holding urine, and the waterproof layer prevents urine absorbed in the absorption layer from leaking outside. On the other hand, in the second conventional undergarment as well, a waterproof moisture-permeable layer is provided directly outside the water-retaining layer that absorbs and holds urine so that the urine absorbed in the water-retaining layer is not leaked to the outside by this waterproof and moisture-permeable layer. I have to. From these facts, it can be said that the first conventional undergarment and the second conventional undergarment have the same layer structure as seen from the operation surface, although the names of the respective parts are different.
However, with such a layer structure, even if the urine can be absorbed and retained by the absorption layer or the water retention layer, the wearer of the underwear turns sideways so that the side of the body faces down due to turning over, etc. In addition, the flow of urine occurs along the interface between the absorbent layer and the waterproof layer (first conventional undergarment) and the interface between the water retaining layer and the waterproof moisture-permeable layer (second conventional undergarment). There was a case of urine leakage from between the underwear and underwear.

  The present invention has been made in view of the above circumstances, and urine leakage is prevented even when the wearer turns over in the urine leakage countermeasure fabric and the underwear such as a diaper manufactured using the urine leakage countermeasure fabric. An object of the present invention is to provide a urine leakage countermeasure fabric and underwear that can be prevented. In addition, the present invention is not limited to various requirements such as no urine leakage, long-time wearing (no stuffiness), easy wearing feeling (no mottling and easy movement), and repeated washing. The purpose is to provide a urine leak-proof fabric and underwear that can achieve satisfactory results on average.

In order to achieve the above object, the present invention has taken the following measures.
That is, the urine leakage countermeasure fabric 10 according to the present invention includes a front fabric 11, a water retention layer 12, a water absorption / diffusion layer 13, and a waterproof fabric 14 in this order.
With such a configuration, when the face fabric 11 is used to face the skin and the waterproof fabric 14 is directed to the outside, moisture such as urine (hereinafter simply referred to as “urine etc.”) 11, passing through the water retaining layer 12 and the water absorbing diffusion layer 13 to reach the waterproof fabric 14, spreading from the waterproof fabric 14 through the interface between the water absorbing diffusion layer 13 and the water absorbing diffusion layer 13, and being sucked up to the water absorbing diffusion layer 13. Even in the layer of the water absorption diffusion layer 13, it spreads in the surface direction, and is absorbed by the water retention layer 12 in the widened area and diffused in the layer of the water retention layer 12. In this way, a large amount of urine and the like is retained in the water absorption diffusion layer 13 and the water retention layer 12, so that a large amount of urine and the like (urine that leaks urine) at the interface between the water absorption diffusion layer 13 and the waterproof fabric 14 Will not stay. Therefore, urine leakage can be prevented even when the wearer turns over.

It is preferable to provide a water absorption diffusion layer 15 between the front fabric 11 and the water retention layer 12. That is, the water-retaining layer 12 has a sandwich structure in which the front and back surfaces are sandwiched between the water-absorbing diffusion layers 13 and 15 in this way.
With this sandwich structure, urine and the like absorbed by the water retention layer 12 are further absorbed and diffused from the water retention layer 12 to the water absorption diffusion layer 15 on the surface fabric 11 side. Therefore, the amount of urine absorbed and retained in the water absorption diffusion layer 15 is reduced from the total amount, and the effect of further preventing leakage of urine is achieved. At the same time, there is also an effect that the urine absorption capacity (performance) of the urine leakage countermeasure fabric 10 as a whole is increased.

It is preferable that the front fabric 11 has a hydrophobic layer 20 provided on the side opposite to the water retention layer 12 and a hydrophilic layer 21 provided on the water retention layer 12 side.
With such a surface fabric 11, the hydrophobic layer 20 comes into contact with the skin side, and it is possible to prevent the skin from being wetted with urine or the like once absorbed and retained. Therefore, a comfortable wearing feeling can be obtained.
The water absorption / diffusion layer 13 provided between the water retaining layer 12 and the waterproof fabric 14 may have a polymerization structure of a plurality of layers as necessary.

The water retaining layer 12 may be formed of a non-woven fabric produced by heating a needle punched by mixing polyester, rayon, and a low melting point fiber to a temperature higher than the melting point of the low melting point fiber.
In such a water-retaining layer 12, since the yarns are entangled with each other by needle punching, the entangled structure is fixed and held by heat fusion of the low melting point fiber. Will not be eliminated, and as a result, there will be no sag or fuzz and durability will be improved.

In addition, forming the water retention layer 12 with a nonwoven fabric in this way leads to a significant reduction in cost compared to the case where the water retention layer 12 is formed of the same material as the water absorption diffusion layer 13 and the like as described later. As a result, the product price can be reduced.
The water absorption diffusion layers 13 and 15 may be formed by knitting a fiber material in which thick single fibers are accumulated and a fiber material in which fine single fibers are accumulated. Thereby, it can be excellent in diffusibility with respect to urine etc. once absorbed.
On the other hand, the undergarment 1 according to the present invention is to be worn by directly contacting the lower body with the skin surface (for example, a diaper or a pant with a diaper function). The urine leakage countermeasure fabric 10 is provided. In this case, the urine leakage countermeasure fabric 10 is in a state in which the front fabric 11 is directed to the skin side and the waterproof fabric 14 is directed to the outside.

  In the urine leakage prevention fabric and underwear according to the present invention, in the urine leakage prevention fabric and underwear such as diapers manufactured using the urine leakage prevention fabric, the urine leakage can be prevented even when the wearer turns over. It has become. In addition, this urine leakage countermeasure fabric and underwear are not leaking urine, can be worn for a long time (no stuffiness), easy to wear (no movement, easy to move), and can be washed repeatedly. As a result, satisfactory results are obtained on average in all aspects.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 4 shows an embodiment of the undergarment 1 according to the present invention. The underwear 1 of the first embodiment is an example applied to a diaper that can be repeatedly washed and used. Since this underwear 1 is a diaper, it has a main body 2 shaped so as to cover the lower half of the body (crotch) from the rear to the front. A leak preventing dam 3 is provided, and a water repellent 4 for a bleeding stopper is provided on the rear side. Further, an edge tape 5 is provided so as to surround the entire circumference.

The undergarment 1 uses the urine leakage countermeasure fabric 10 according to the present invention centering on a portion where urine leakage occurs. Specifically, substantially the entire body including the main body 2 and the left and right dam portions 3 excluding the water repellent portion 4 and the edging tape 5 is formed of the urine leakage countermeasure fabric 10.
1 to 3 show a first embodiment of a urine leakage countermeasure fabric 10 according to the present invention. The urine leakage countermeasure fabric 10 is obtained by superimposing a front fabric 11, a water retention layer 12, a water absorption diffusion layer 13, and a waterproof fabric 14 in this order. The front fabric 11 is directed to the skin side when used as the underwear 1, and the waterproof fabric 14 is directed outward. A water absorption diffusion layer 15 is also provided between the front fabric 11 and the water retention layer 12. The outer fabric 11, the water-absorbing diffusion layer 15, the water-retaining layer 12, the water-absorbing / diffusing layer 13, and the waterproof fabric 14 are stitched and integrated with each other in a state where they are overlapped with each other. As the sewing thread used for this stitching, a water-repellent finish is used.

The front fabric 11 prevents wetting and returning while keeping the surface in contact with the skin smooth. Such a front fabric 11 has a hydrophobic layer 20 provided on the side opposite to the water retention layer 12 (that is, the side in contact with the skin) and a hydrophilic layer 21 provided on the water retention layer 12 side. It has a structure.
The hydrophobic layer 20 and the hydrophilic layer 21 are different in the degree of familiarity (water conductivity) with respect to urine and the like. That is, the hydrophilic layer 21 is more familiar with urine and the like than the hydrophobic layer 20. The basic material of the hydrophobic layer 20 and the hydrophilic layer 21 can be the same. For example, the hydrophobic layer 20 uses a polyester thread having a regular cross-sectional shape (a normal shape such as a circle), and the hydrophilic layer 21 has a different cross-sectional shape (for example, a flat shape, an oval shape, a star shape, or an L shape). Assuming that polyester yarns other than the standard shape, such as molds, are used, these may be knitted in a manner that distributes them to the front and back (changes the yarn).

The hydrophobic layer 20 can be replaced with a polypropylene or fluorine-based yarn, and the hydrophilic layer 21 can be replaced with a yarn such as cotton, rayon, or wool.
The water retaining layer 12 absorbs urine and the like and retains water. A nonwoven fabric can be used for the water retention layer 12. This non-woven fabric is made by mixing polyester and rayon with equal distribution and adding low-melting fiber, and then shaping this material with needle punches while interlacing yarns, and then forming low-melting fiber It is said that the heating is performed at a temperature equal to or higher than the melting point of By this heating, the entangled structure between the yarns is fixed by the melted low melting point fiber. Therefore, even if washing is repeated, the entanglement structure between the yarns is not eliminated, and as a result, not the water retaining layer 12 itself, but the entire urine leakage prevention fabric 10 (underwear 1) does not get loose or fluffy. It will be a thing.

The water absorption / diffusion layer 13 provided between the water retention layer 12 and the waterproof fabric 14 and the water absorption / diffusion layer 15 provided between the front fabric 11 and the water retention layer 12 exhibit the same action, and can produce urine and the like. While absorbing quickly, this absorbed urine etc. are diffused rapidly along a surface direction. Therefore, these water absorption diffusion layers 13 and 15 can be made the same in terms of material.
For these water-absorbing diffusion layers 13 and 15, a knit formed by knitting a fiber material in which thick single fibers are integrated and a fiber material in which fine single fibers are integrated can be used. The meaning of the fiber material in which the monofilaments of thick counts and the fiber material in which the monofilaments of fine counts are accumulated is the same as the material and the thickness of one thread, but the thickness of the fibers used as the material Refers to something significantly different. For example, a polyester yarn of 167 dtex 144F and a polyester yarn of 167 dtex 48F are used.

The waterproof fabric 14 prevents urine and the like from leaking outside. The waterproof fabric 14 can be a polyester knit fabric laminated with a heat-resistant urethane film. The polyester yarn may be 75d / 36F. By using a heat-resistant polyurethane film, it can withstand high-temperature treatment when washing and drying on the linen contractor side.
In the use state of the undergarment 1 having such a configuration, the first thing to pay attention to is that urine concentrates locally on the outer fabric 11 and is dropped in a large amount at a time. That is, since urine is dropped on a part of the outer fabric 11 in such a situation, as shown in FIG. 2, the urine first substantially removes the outer fabric 11, the water absorption diffusion layer 15, the water retention layer 12, and the water absorption diffusion layer 13. It passes in a state close to the passage and reaches the waterproof fabric 14.

In this way, some of the urine and the like that has reached the waterproof fabric 14 spreads in the surface direction via the interface between the waterproof fabric 14 and the water absorption diffusion layer 13, and the water absorption diffusion layer is spread all at once in the entire expanded area. Sucked up to 13. In addition, most other urine and the like are further diffused in the surface direction in the layer of the water absorption diffusion layer 13, and are spread over almost the entire area of the water absorption diffusion layer 13 as seen. Then, as shown in FIG. 3, the water absorption layer 13 is gradually absorbed toward the water retention layer 12.
As can be seen from this, urine and the like are originally absorbed in a wide area with respect to the water retention layer 13, but after that, in the layer of the water retention layer 13, it penetrates into the entire area in the plane direction and the thickness direction. . Thus, the urine and the like absorbed and retained so as to spread over substantially the entire area of the water retaining layer 13 are then absorbed in a wide area by the absorption diffusion layer 15 near the outer fabric 11. Accordingly, urine and the like are quickly diffused and retained in substantially the entire area of the absorption / diffusion layer 15.

In this way, a large amount of urine or the like is retained in the entire area (three layers) of the water absorption diffusion layers 13 and 15 sandwiching the front and back surfaces of the water retention layer 12 in the center. For example, in this underwear 1, it is easy to give a water retention amount of about 300 to 350 cc, which is generally regarded as a single urination amount for an adult. Therefore, unlike conventional underwear, a large amount of urine or the like (urine that leaks urine) does not stay at the interface between the water-absorbing diffusion layer 13 and the waterproof fabric 14. Therefore, urine leakage can be prevented even when the wearer turns over.
Moreover, since the water absorption diffusion layer 15 between the water retention layer 12 and the surface dough 11 retains water, the return of urine and the like toward the surface dough 11 in proportion to the amount of water retained by the water absorption diffusion layer 15 is Furthermore, since the water retaining layer 12 itself, the hydrophobic layer 20 and the hydrophilic layer 21 are provided, the surface of the outer fabric 11 can be kept in a smooth state. For this reason, the wearer of the underwear 1 does not feel wet or uncomfortable, and substantially protects the skin from a wet state for a long time and prevents the occurrence of inflammation.

In this underwear 1, in addition to the comfort of wearing as described above, the waterproof fabric 14 can be washed and dried (high temperature treatment) on the linen contractor side by using a heat-resistant polyurethane film, and the water retaining layer 12 Because it is a non-woven fabric that has been heat-set with low-melting fibers, it does not cause settling or fluffing even during repeated washing, and it uses water-absorbing diffusion layers 13 and 15 that are more diffusible. As a result, it is possible to obtain an average result that is sufficiently satisfactory in various aspects, such as that the drying after washing is fast.
In addition, regarding the number of repetitions of washing, the conventional diaper (using a non-heat set nonwoven fabric) is drastically damaged after about 5 to 8 washings and is no longer needed. It has been confirmed by experiments that the undergarment 1 can withstand use even after 100 washes.

FIG. 5 shows a second embodiment of the urine leakage countermeasure fabric 10 according to the present invention. In the urine leakage countermeasure fabric 10 according to the second embodiment, the urine leakage countermeasure fabric 10 is provided between the water retaining layer 12 and the waterproof fabric 14. The water absorption diffusion layer 13 has a polymerization structure for a plurality of layers (in the example shown in the figure, a double structure).
In the underwear 1 manufactured with the urine leakage countermeasure fabric 10 of the second embodiment, it is possible to easily have a water retention amount of about 500 cc. Accordingly, it has a water retention capacity that greatly exceeds the water retention amount of about 300 to 350 cc, which is generally regarded as a single urination amount for adults, and can be utilized for nighttime use, travel use, and the like.

By the way, the present invention is not limited to the above-described embodiment, and can be appropriately changed according to the embodiment.
For example, the urine leak countermeasure fabric 10 according to the present invention is formed as an underwear 1 such as a diaper or a diaper-capable pant, or a pad-shaped diaper or between a normal underwear and a body. It is good also as what uses it like pinching. Further, the urine leakage countermeasure fabric 10 and the underwear 1 are not limited to being used for adults, and may be used for infants, pets, and the like.

A test for confirming the usefulness of the layer structure in which the water-absorbing diffusion layer 13 is provided outside the water-retaining layer 12 and the sandwich structure of the water-absorbing diffusion layer 15, the water-retaining layer 12, and the water-absorbing diffusion layer 13 was conducted. FIG. 6 shows the specimens [A] to [D] used, and FIG. 7 shows the test results.
In FIG. 6, the specimen of [A] is a nonwoven fabric alone (that is, corresponding to the case of only the water retention layer 12), and the specimen of [B] is a nonwoven fabric covered with a cloth (that is, water retention). The test piece of [C] is a fabric placed under a non-woven fabric (that is, the water retention layer 12 and the water absorption diffusion on the outside thereof). The test piece of [D] is provided with cloth on both the upper and lower sides of the nonwoven fabric (that is, the water absorption diffusion layer 15 on the skin side and the water absorption on the outer side of the water retention layer 12). This is equivalent to the case of a sandwich structure with the diffusion layer 13). The test piece of [D] corresponds to that described in the first embodiment of the urine leakage countermeasure fabric 10 according to the present invention.

In the test, 10 cc of colored test water was dropped from a certain height onto each of the test pieces [A] to [D], and the surface (upper surface side) and back surface (lower surface side) of each test piece 3 minutes after the dropping. In addition to observing the diffusivity at, the approximate length and width of the diffusion range were measured.
In FIG. 7, it is clear that the specimen of [A] has poor diffusibility on both the front surface and the back surface. Therefore, this layer structure is not suitable for adopting as a urine leakage countermeasure fabric.
Further, it is clear that the specimen of [B] has good diffusibility on the front surface but poor diffusibility on the back surface. If such a layer structure is adopted in the urine leakage countermeasure fabric, the moisture absorbed by the non-woven fabric (water retaining layer 12) is only diffused on the skin side, and a sufficient dry area is ensured in that it is not diffused outside. In addition, it can be seen that a part of the nonwoven fabric has a locally large amount of water retention, which is combined with a low drying property at that part, which makes it extremely difficult to dry and easily stuffy. In particular, the point that the amount of water retention locally increases in a part of the nonwoven fabric is predicted to cause leakage of urine in view of the fact that there is only the waterproof fabric 14 on the outside. Therefore, this layer structure is also unsuitable for adopting as a urine leakage countermeasure fabric.

In contrast to the specimen [B] described above, it is clear that the surface diffusivity is poor and the back surface diffusivity is good in the specimen [C]. If such a layer structure is adopted for the urine leakage countermeasure fabric, the drying property is not much different from the test piece of [B], but before reaching the waterproof fabric 14, the lower fabric (water absorption diffusion layer 13) In this way, it is possible to prevent the leakage of urine due to the diffusion of moisture. Therefore, it is considered possible to employ this layer structure as a urine leakage countermeasure fabric.
It is clear that the specimens of [D] have good diffusibility on the front and back surfaces. Therefore, it has been confirmed that by adopting this layer structure as the urine leakage countermeasure fabric, the above-described various effects can be sufficiently obtained as the urine leakage countermeasure fabric 10 according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view illustrating a first embodiment of a urine leakage countermeasure fabric according to the present invention, in which the layer structure is disassembled for easy understanding. It is a sectional side view explaining the water absorption mechanism in the urine leak countermeasure cloth of a 1st embodiment. It is a sectional side view explaining the water absorption diffusion condition following FIG. It is a perspective view which shows the underwear produced using the urine leak countermeasure fabric. It is side sectional drawing which decomposed | disassembled and demonstrated the layer structure about 2nd Embodiment of the urine leak countermeasure fabric which concerns on this invention. It is explanatory drawing which showed the test piece used for the test. It is the figure which showed the test result.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Underwear 10 Urine leakage countermeasure fabric 11 Surface fabric 12 Water retention layer 13 Water absorption diffusion layer 14 Waterproof fabric 15 Water absorption diffusion layer 20 Hydrophobic layer 21 Hydrophilic layer

Claims (7)

  A urine leakage countermeasure fabric characterized in that a front fabric (11), a water retention layer (12), a water absorption diffusion layer (13), and a waterproof fabric (14) are provided in this order.   A water absorption diffusion layer (15) is also provided between the front fabric (11) and the water retention layer (12), whereby the water retention layer (12) is sandwiched between the water absorption diffusion layers (13, 15) on both sides. The urine leakage prevention dough according to claim 1, wherein the dough has a sandwich structure.   The front fabric (11) has a hydrophobic layer (20) provided on the side opposite to the water retention layer (12) and a hydrophilic layer (21) provided on the water retention layer (12) side. The urine leakage countermeasure fabric according to claim 1 or 2, characterized in that   The urine according to claim 2 or 3, wherein the water-absorbing diffusion layer (13) provided between the water-retaining layer (12) and the waterproof fabric (14) has a polymerization structure of a plurality of layers. Anti-leakage fabric.   The water retention layer (12) is formed of a nonwoven fabric produced by heating a material having a temperature equal to or higher than the melting point of the low melting point fiber to a needle punched mixture of polyester, rayon and low melting point fiber. The urine leakage prevention cloth according to any one of claims 1 to 4.   The water-absorbing diffusion layer (13) (15) is formed by knitting a fiber material in which monofilaments of thick counts and a fiber material in which monofilaments of fine counts are accumulated. The urine leakage countermeasure fabric according to any one of claims 1 to 5.   The underwear for preventing urine leakage (10) according to any one of claims 1 to 6, wherein the urine leakage countermeasure fabric (10) is a front fabric (11) centering on a portion where urine leakage occurs in an underwear to be attached to the lower body directly in contact with the skin surface. ), With the waterproof fabric (14) facing outwards.