JP2002165829A - Diaper and urine absorption pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a diaper and urine absorption pad which are repetitively washable while having sufficient water absorbing and retaining characteristics, are easily dried after laundry and can assure air permeability and prevent damp heat when cloth is excessively wet. SOLUTION: The diaper or the urine absorption pad includes a laminate of at least one sheet of water absorptive quick-drying cloth, three-dimensional woven fabric, and at least one cloth which absorbs and retains water through this three-dimensional woven fabric.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a diaper and a urine absorbing pad. The present invention particularly relates to a diaper and a urine absorbing pad which are washable, quick-dry, and also have a bacteriostatic and / or deodorizing function.

[0002]

2. Description of the Related Art Conventionally, diapers and urine absorbing pads are classified into cloth and paper (so-called disposable). Paper products are easy to handle and convenient, but on the other hand, they use a lot of paper.
Biodegradation is not possible, and it is a major social problem in terms of disposal. In addition, as a matter of course, it cannot be reused by washing or the like, which leads to an increase in cost.

On the other hand, in order to increase the water absorption and retention of cloth, it is necessary to take measures such as increasing the thickness of the cloth or stacking several cloths. There was a problem that much labor and time had to be spent. In addition, such products also cause problems such as discomfort, rash, and bedsore for the wearer due to the irritating feeling of discomfort and the fabric itself being excessively wet.

Therefore, various techniques have been developed for fabrics to solve such problems.
For example, Japanese Patent Application Laid-Open No. H11-146893 discloses a structure in which a cloth on which a water-absorbing polymer is sprayed can be attached and detached, and drying and the like are separately performed by separately performing washing and the like on a diaper and a diaper cover. There have been proposals for shortening the processing time. However, this is only sprayed with a water-absorbing polymer, not only inadequate resistance to repeated washing, but also to ensure breathability to eliminate discomfort when the fabric is excessively wet. In addition, it is not configured to prevent stuffiness.

Furthermore, Japanese Patent Application Laid-Open No. 11-285512 discloses a diaper using a water-absorbing particle and a diaper cover which are integrated with each other to prevent the cloth from being excessively wet by interposing an intermediate member. There has been proposed a device which ensures air permeability and prevents stuffiness. However, this has a structure that can simultaneously satisfy the conflicting requirements of improving water absorption and shortening the drying time after washing, although the initial water absorption and water retention is sufficient, but the repeated washing resistance is insufficient. not. In addition, this document does not describe any function of bacteriostatic and / or deodorizing properties.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned state of the art, and has a sufficient water-absorbing and water-retaining property, can be repeatedly washed, and can be easily dried after washing. An object of the present invention is to provide a diaper and a urine absorbing pad which can secure air permeability and prevent stuffiness when the fabric is excessively wet, and optionally have a bacteriostatic and / or deodorizing function. .

[0007]

In order to solve the above-mentioned problems, the present invention provides at least one water-absorbing quick-drying fabric, a three-dimensional knitted fabric, and at least one water absorbing and retaining water through the three-dimensional knitted fabric. A diaper including a laminate with a piece of cloth is provided. The present invention also provides at least one water-absorbing quick-drying fabric, a three-dimensional knitted fabric, and water absorption through the three-dimensional knitted fabric,
Provided is a urine absorbing pad including a laminate with at least one cloth that retains water.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an overall perspective view of an example of the diaper of the present invention. FIG. 2 is a schematic cross-sectional view in the longitudinal direction of the diaper shown in FIG. FIG. 3 is an overall perspective view of another example of the diaper of the present invention.

FIG. 4 is a schematic sectional view in the longitudinal direction of the diaper shown in FIG. FIG. 5 is a schematic cross-sectional view in the longitudinal direction when the diaper shown in FIG. 3 is developed. FIG. 6 is an overall perspective view of an example of the urine absorbing pad of the present invention. FIG. 7 is an overall perspective view of another example of the urine absorbing pad of the present invention.
The diaper 1 shown in FIG. 1 and FIG.
The three-dimensional knitted fabric 3, the water-absorbent and water-retentive fabric 4, and the waterproof fabric 5 are formed of a laminated body which is sequentially laminated, and have a configuration in which the periphery thereof is surrounded by a waterproof-processed edge tape 6. In this diaper, the waterproof cloth 5 may be replaced with a cloth similar to the water-absorbing quick-drying cloth 2 or a normal water-absorbing cloth, and such a diaper is preferable from the viewpoint of further shortening the drying time after washing. In this case, it is desirable that the diaper cover and the like used at the same time provide a sufficient waterproof function. Similarly, the waterproof treatment is not necessarily required for the edge tape 6.

[0010] The diaper of the present invention can absorb a maximum of 400 ml of urine per adult and retain water by such a laminated structure. It is guarded by waterproof tape on the edge. In addition, the diaper can be repeatedly washed, is easy to dry after washing, is quick-drying, and can secure air permeability when the fabric is excessively wet and prevent stuffiness.

According to another embodiment of the diaper of the present invention, as shown in FIGS. 3, 4 and 5, the water-absorbing quick-drying fabric 2,
A half piece having a configuration in which a three-dimensional knitted fabric 3, a water-absorbent water-retentive fabric 4, and a water-absorbing quick-drying fabric 2 'are sequentially laminated, and the periphery of which is surrounded by a waterproof-wrapped tape 6; A quick-drying fabric 2 ', a water-absorbent and water-retentive fabric 4' and a waterproof fabric 5 are each formed of a laminated body in which layers are sequentially laminated, and a half of which is surrounded by a waterproof-wrapped tape 6 '. It has a configuration in which it is bent at its center and stacked in two layers (see FIGS. 3 and 4). The diaper can be unfolded and unfolded at the center during washing and drying (see FIG. 5), thereby greatly reducing labor and time required for removing dirt and drying. Becomes possible. Of course, even in the diaper of this embodiment, excellent water absorption and water retention, leakage prevention,
It has repetitive washing properties, drying properties after washing, air permeability at the time of use, and anti-stuffiness.

Also in this case, if a sufficient waterproof function can be achieved by a diaper cover or the like used at the same time, the waterproof cloth 5 is replaced with a cloth similar to the water-absorbing quick-drying cloth 2 or a normal water-absorbing cloth. Such a diaper is preferable from the viewpoint of further shortening the drying time after washing. The edge tapes 6 and 6 'do not necessarily have to be waterproofed.

FIG. 6 is a view showing an example of a urine absorbing pad according to the present invention. This pad is shown in FIGS. 1 and 2 except that the pad is configured in its entire shape to be suitable for urine absorbing use. It has the same configuration as a diaper. Therefore, even with this urine absorbing pad, the same excellent operational effects as those described above with respect to the diaper shown in FIGS. 1 and 2 can be obtained.

FIG. 7 is a view showing another example of the urine absorbing pad according to the present invention. This pad is configured in the same manner as in FIG. It has the same configuration as the diaper shown in FIGS. 4 and 5. Therefore, even with this urine absorbing pad, the same excellent operational effects as those described above with respect to the diaper shown in FIGS. 3, 4 and 5 can be obtained.

Hereinafter, preferred embodiments of each component constituting the diaper and the urine absorbing pad according to the embodiment of the present invention as described above will be described, but of course, the present invention is not limited to these examples. 1. Water-absorbing quick-drying fabric The water-absorbing quick-drying fabric used in the present invention is not particularly limited as long as it can rapidly absorb excreted body fluids such as urine, and then can be widely spread and dried in a short time. For example, when 1 cc of water is dropped, water is absorbed within 1 to 2 seconds, and according to a test method in which the amount of water diffused after 5 minutes is represented by the average diameter of water droplets, the water-absorbing quick-drying fabric used in the present invention has a diffusion diameter of 5 cm. As described above, it is particularly preferable that the fabric be 10 cm or more.

The thickness of the water-absorbing quick-drying fabric is not particularly limited. However, considering that the water-absorbing quick-drying fabric exhibits a sheet-like action, it is preferable that the thickness be equal to that of a normal sheet. The water-absorbing quick-drying fabric may be in any form such as a woven fabric, a knitted fabric, or a nonwoven fabric. Further, the fibers constituting such a fabric may be natural fibers such as cotton and wool, synthetic fibers such as polyester fibers, regenerated fibers such as rayon, etc., each of which may be used alone or in combination with two or more. The above may be used in combination. However, polyester fibers are preferred from the viewpoints of washing resistance and quick drying. At the same time, in consideration of water absorption and diffusion properties, stain removal properties, texture, and the like, polyester fibers on which a polyalkylene oxide segment or the like is graft-polymerized are more preferred.

In the present invention, the water-absorbing quick-drying fabric may be subjected to a bacteriostatic treatment. Examples of the bacteriostatic treatment include organic bacteriostatic agents such as quaternary ammonium salt compounds, amino acid compounds, phenol compounds, biguanite compounds, pyridine compounds, and inorganic compounds such as silver and copper compounds. Bactericidal agents are included. Each of these may be used alone or in combination of two or more.

The amount of these bacteriostats applied to the fibers is preferably about 0.01 to 3% by weight based on the weight of the fibers. If it is less than 0.01%, the bacteriostatic effect may not be sufficient, and if it is provided at 3% or more, the effect is hardly further improved, which is disadvantageous in cost. In the present invention, a deodorizing treatment may be performed on the water-absorbing quick-drying fabric in addition to or without performing the above-described bacteriostatic treatment. Such a deodorizing treatment can be performed, for example, by immobilizing an inorganic compound with a binder resin. Examples of the inorganic compound useful for such a treatment include oxides such as zinc, aluminum, tin, magnesium, titanium, and silicon or water. An oxide can be used. They are,
Each may be used alone, or two or more kinds may be used in combination.

The amount of these inorganic compounds applied to the fibers is as follows:
It is preferably about 0.01 to 3% by weight based on the weight of the fiber. If it is less than 0.01%, the deodorizing effect may not be sufficient, and if it is added at 3% or more, the effect is hardly further improved, which is disadvantageous in cost. 2. Three-dimensional knitted fabric The three-dimensional knitted fabric useful in the present invention has, for example, a three-dimensional three-dimensional structure, and achieves air permeability for preventing discomfort when the fabric is excessively wet and prevention of stuffiness. It may be able to do. In addition, such three-dimensional knitted fabric,
It is particularly preferable that bedsores and the like can be reduced, and at the same time, the three-dimensional structure leads to imparting heat retention by retaining air and reducing the feeling of coldness by preventing backflow of urine.

More specifically, for example, a three-dimensional knitted fabric knitted from a two-layered knitted fabric and a connecting yarn connecting the two-layered knitted fabric, a double Russell machine having a double-row needle bed, Examples thereof include those formed by a circular knitting machine or the like. The material of the yarn used for the two-layer knitted fabric and the connecting yarn is not particularly limited, but natural fibers such as cotton and wool, polyester fibers, polyamide fibers,
Synthetic fibers such as polyacrylonitrile fibers and the like and regenerated fibers such as rayon can be used singly or in combination of two or more types. Particularly, synthetic fibers rich in quick-drying are preferably used, and chemical resistance in washing is also preferable. In consideration of heat resistance and heat resistance, polyester fibers or polyamide fibers are particularly preferable.

The shape of the yarn used for the front and back knitted fabric may be not only a round cross-section yarn but also a modified cross-section yarn. Further, as the form of the yarn, any form such as a filament yarn, a spun yarn, and a crimped yarn can be arbitrarily adopted. The front and back two-layer knitted fabric may be a knitted fabric having a plurality of openings, such as a mesh knitted fabric, a marquisette knitted fabric, and the like, and the permeability and water permeability are improved by various treatments and selection of a knitted fabric structure. It may be made to be. For example, it is also preferable that one of the two-layered knitted fabric processed into a honeycomb shape.

[0022] For connecting yarn in order to obtain an appropriate elasticity and resilience, the single yarn denier is from 15 to 2000 denier, preferably preferably monofilament or multifilament of 50 to 500 denier, especially the three-dimensional knitted fabric 5cm in ² The number of connecting yarns is N (number / 2 cm ² ),
When the denier of the connecting yarn is D (g / 9 × 10 cm) and the specific gravity of the connecting yarn is ρ (g / cm ² ), the solid knitted fabric is 5 cm ^2.
Has a total cross-sectional area (ND · 9 × 10ρ) of 0.05 to 4.0 cm ² , preferably 0.1 to 2.0 c.
When it is m ^2, it is excellent in sublimeness, elasticity, air permeability, and water permeability, and is also excellent in the balance between them, so that an optimal diaper or urine absorbing pad can be obtained.

In the above description, a three-dimensional knitted fabric having a two-layered knitted fabric is particularly described as an example. However, the three-dimensional knitted fabric used in the present invention is not limited to these three-dimensional knitted fabrics. Needless to say, the knitted fabric having the above-described layer configuration may be used again. 3. Water-absorbent and water-retaining fabric In the present invention, the water-absorbent and water-retentive fabric may be in any form such as a woven fabric, a knitted fabric, or a nonwoven fabric, and the fibers constituting the fabric include cotton, rayon, cupra, and the like. Although there is no particular limitation, it is preferable that the water absorption / retention function is not reduced even in repeated washing and drying.For example, a polyacrylic acid sodium salt as a main component and a polymer raw material are used. It is particularly preferable to use a highly moisture-absorbing, highly water-absorbing and water-retaining fiber obtained by directly spinning and mixing the obtained fiber with rayon or polyester fiber to form a nonwoven fabric.

Since this polyacrylic acid sodium salt also has a deodorizing function, its use as a material of a water-absorbent and water-retentive fabric is particularly preferable for diapers and urine absorbing pads. 4. Waterproof fabric The waterproof fabric useful in the present invention has a function of preventing urine absorbed by the water-absorbent and water-retentive fabric from leaking to the outside. Structurally, at least one of the waterproof fabrics is disposed at least in a lowermost portion when the diaper or the urine absorbing pad is attached, and the waterproofed edge tape is disposed therewith along the entire circumference. This is preferable because it can serve as a breakwater as well as a vertical break and a side leak as well as a leak from the sea.

As described above, this waterproof fabric is
If desired, the fabric may be replaced with a water-absorbing quick-drying fabric as described above or a normal water-absorbing fabric. Almost all fiber fabrics such as general woven fabric, knitted fabric, and nonwoven fabric can be used as the base fabric of the waterproof fabric. As the types of fibers constituting the fabric, natural fibers such as cotton and wool, synthetic fibers such as polyester fibers and polyamide fibers, and recycled fibers such as rayon can be used. In consideration of washing resistance, a synthetic fiber fabric made of polyester fiber or the like is desirable.

The waterproofing agent applied to the base fabric includes
Polyethylene, polyurethane and the like are typical, but polyurethane is preferred in view of chemical resistance and washing resistance, and more preferably high molecular weight polyurethane.
If desired, such a waterproof fabric can be subjected to a water-repellent treatment according to a conventional method. Useful water repellents include fluorine-based water repellents, silicon-based water repellents, paraffin-based water repellents, etc. Agents are preferred. If desired, the above-described bacteriostatic treatment or deodorizing treatment may be performed according to a conventional method before the water-repellent treatment. Further, the bacteriostatic treatment and the deodorizing treatment can also be performed on a water-absorbing quick-drying fabric or a water-absorbing fabric used in place of the waterproof fabric.

The edge tape used as desired in the present invention may also have the same structure as the above-mentioned waterproof fabric.

[0028]

As described above, the diaper and urine absorbing pad of the present invention have a structure to be mounted in a diaper cover, but have a thin and sufficient water absorbing and retaining capacity in which various functions are laminated. It has something. Further, not only the labor and time required for the washing process and the drying can be reduced, but also repeated washing is possible, so that a linen contractor can perform a large amount of batch processing.

Further, even when the fabric is excessively wet, the air permeability can be ensured and the moisture can be prevented, so that the discomfort of the wearer can be eliminated, and rashes and bedsores can be reduced. In addition, it has a sanitary function and is hygienic, has the effect of preventing infection in hospitals, and the deodorant function has new effects such as improving the environment of caregivers and wearers and eliminating psychological pressure. give.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of an example of a diaper according to the present invention.

FIG. 2 is a schematic cross-sectional view in the longitudinal direction of the diaper shown in FIG.

FIG. 3 is an overall perspective view of another example of the diaper of the present invention.

FIG. 4 is a schematic cross-sectional view in the longitudinal direction of the diaper shown in FIG.

5 is a schematic cross-sectional view in the longitudinal direction when the diaper shown in FIG. 3 is developed.

FIG. 6 is an overall perspective view of an example of the urine absorbing pad of the present invention.

FIG. 7 is an overall perspective view of another example of the urine absorbing pad of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Diaper 2, 2 '... Water-absorbing quick-drying cloth 3 ... Three-dimensional knitted fabric 4, 4' ... Water-absorbing and water-retaining cloth 5 ... Waterproof cloth 6, 6 '... Edge tape

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) B32B 5/26 A41B 13/02 PF term (Reference) 3B029 BB05 BG05 4C058 AA03 AA12 BB07 CC06 JJ03 JJ04 JJ07 JJ08 JJ23 4C098 AA09 CC03 CC19 CE06 DD05 DD06 DD07 DD08 DD09 DD10 DD20 DD23 DD26 4F100 BA03 BA07 BA10A DG11A DG11C DG13B GB66 GB71 JD15 JD15A JD15C JD16 JD16A

Claims (6)

[Claims] 1. A diaper comprising a laminated body of at least one water-absorbing quick-drying fabric, a three-dimensional knitted fabric, and at least one fabric that absorbs and retains water through the three-dimensional knitted fabric. 2. The diaper according to claim 1, which has been subjected to antibacterial processing. 3. The diaper according to claim 1, which has been subjected to a deodorizing treatment. 4. A urine absorbing pad comprising a laminate of at least one water-absorbing quick-drying fabric, a three-dimensional knitted fabric, and at least one fabric that absorbs and retains water through the three-dimensional knitted fabric. 5. The urine absorbing pad according to claim 4, which has been subjected to antibacterial treatment. 6. The urine absorbing pad according to claim 4, which is subjected to a deodorizing treatment.