JPH08199408A - Cooling wear - Google Patents

Abstract

PURPOSE: To provide a cooling wear containing a highly water-absorbing resin filled in a water-permeable bag formed on the inner or outer surface of a wear, exhibiting cooling effect over a long period by impregnating chilled water in the resin and useful for the work in hot environment and the wearing in hot season. CONSTITUTION: A sheet such as woven fabric is folded into two to form a front body 3 and a back body and a hole is opened at the folded part to pass the head of the wearing person. Water-permeable bags 8 are formed on the inner or outer surface of the front body and the back body and a highly water- absorbing resin is filled in the bag. The cooling wear is light and compact in a state free from water absorbed in the highly water-absorbing resin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling garment for working in a high temperature atmosphere and for wearing in the hot season to keep it cool.

[0002]

2. Description of the Related Art Conventional cooling clothes for cooling the wearer's body include Japanese Utility Model Publication No. 58-18912 and Japanese Utility Model Publication No. 4-64.
The one described in Japanese Patent No. 512 is known. In these articles, a cold insulating material such as gel is stored in a bag portion provided on clothes, and the cold insulating material is cooled and worn.

[0003]

However, in these cooling garments, the cold insulating material has to be cooled in advance and cannot be used immediately when desired. Further, it has only a cooling capacity corresponding to the heat capacity of the cold insulating material, the cooling effect is lost when it is used for a long time, and it is bulky and heavy because a large amount of cold insulating material is stored.

Further, Japanese Patent Laid-Open No. 52-15747 and Japanese Utility Model Laid-Open No. 53-88301 disclose cooling clothes of the type cooled with dry ice, but if heat insulation is not performed properly, there is a risk of frostbite. Yes, it was not preferable.

The present invention has been made in view of the above circumstances, and provides a cooling garment which is light and compact when not in use and has a cooling effect for a long time by containing cold water. It is intended.

[0006]

SUMMARY OF THE INVENTION The present invention is characterized in that a bag portion having water permeability is formed on an inner surface or an outer surface of a garment, and a highly water-absorbent resin is contained in the bag portion.

In the present invention, the bag portion is preferably made of a hydrophobic material. The super absorbent polymer is in the form of beads and has a coefficient of expansion of 1.5 when absorbing water.
It is preferable to use more than double.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a simple vest 1 as an example of the cooling suit of the present invention.
Is shown. In this simple vest 1, a sheet material 2 such as a woven cloth or a non-woven cloth is folded in half to form a front body 3 and a back body 4, and a through hole 5 for allowing a head to pass through is formed at a fold portion.

As shown in FIG. 2, the wearer 7 passes his / her head through the through hole 5, hangs the front body 3 and the back body 4 in front of and behind the body, and ties the string 6 attached to the back body 4 at the front. , Wear simple vest 1.

A bag portion 8 having water permeability is formed on the front body 3 and the back body 4 of the simple vest 1, respectively, on the surfaces in contact with the body of the wearer 7, and inside the bag portion 8. Contains a super absorbent polymer.

In the bag portion 8, a small piece of woven cloth or non-woven cloth prepared separately is sewn or heat-sealed to the peripheral portion of the front body 3
Alternatively, the bag may be fixed to the back body 4, or a bag body may be separately prepared and attached to the front body 3 and the back body 4. It is also possible to form the bag portion 8 by forming the sheet material 2 from two layers of material and partially separating the two layers.

The sheet material 2 and the bag portion 8 are preferably made of hydrophobic synthetic fiber such as polyester fiber. When hydrophilic fibers such as cotton are used, they get wet and absorb water,
It is uncomfortable when worn and sticky or stuffy.
In particular, the fibers forming the bag portion 8 are preferably hydrophobic.

The bag portion 8 needs to have water permeability so that the superabsorbent resin contained therein absorbs water. The sheet material 2 other than the bag portion 8 does not necessarily need to have water permeability, but it is preferable to use a material having air permeability in order to have a good feel and not damp inside.

When the bag portion 8 is attached to the sheet material 2 by heat fusion, it is preferable to mix fibers having a low melting point such as polypropylene or polyethylene.

The material of the sheet material 2 and the bag portion 8 is required to be thin and light and dense enough to include the powder of the super absorbent resin in the bag portion 8, and a woven or non-woven fabric is used. be able to. In the simple vest 1 as shown in the drawings, it is preferable to use an inexpensive nonwoven fabric.

In FIG. 1, the bag portion 8 includes a front body 3 and a back body 4.
Although it is formed on the inner surface of, i.e., the surface contacting the body of the wearer 7, the outer surface may be formed. Further, the bag portion 8 can be formed on only one of the front body 3 and the back body 4.

The bag portion 8 has a horizontally long bag portion 8 for each of the front body 3 and the back body 4, as shown in the drawing.
It is preferable to form a plurality of. Since the weight of the superabsorbent resin contained in the bag portion 8 increases when it absorbs water, if the bag portion 8 is vertically long, the absorbed superabsorbent resin will stay at the bottom of the bag portion 8 and the entire simple vest 1 Therefore, it is difficult to obtain a uniform cooling effect.

The bag portion 8 contains a highly water-absorbent resin. As the super absorbent resin, various resins such as starch-graft copolymer of acrylic monomer, modified cellulose, sodium polyacrylate, and cross-linked polymer of water-soluble polymer are known. You can select and use one.

As the super absorbent polymer used in the present invention, acrylic acid and an aqueous solution of an alkali metal salt thereof are subjected to reverse phase suspension polymerization in an aliphatic hydrocarbon solvent in which a polymer dispersant is dissolved, and at the time of azeotropic dehydration. It is particularly preferable to use a resin obtained by crosslinking with a crosslinking agent. This resin is described in detail in JP-A 1-213307,
Also, PQ polymer BL from Osaka Organic Chemical Industry Co., Ltd.
It is marketed under the trade name of -100.

This super absorbent resin contains deionized water of 80 to
It has a water absorption capacity of 100 times, a water absorption ratio of 2 to 3 times, exhibits a high swelling property and a high fluidity when absorbing water, exhibits good water permeability, and is not sticky after water absorption.

In this specification, the term "expansion factor" is obtained by dividing the superabsorbent resin by the volume of water to which the apparent volume of the swollen resin is added when absorbing 10 times the amount of water. The normal superabsorbent resin exhibits a gel form when absorbing water, and the water absorption ratio is usually 1.0 to
It is about 1.5.

On the other hand, in the highly water-absorbent resin obtained by the above-mentioned method, the surface of the resin particles has water repellency, and even in the water-absorbed state, the individual particles are in the form of beads without exhibiting a dull gel. To form voids between the beads. Therefore, it has an apparent volume of 2 to 3 times the volume of the added water, and there is no liberated water, and it is in a state of having water permeability as dryness.

By using such a highly water-absorbent resin, even when the highly water-absorbent resin in the bag portion 8 absorbs water and swells, it has a smooth fluidity and can be directly contacted with the skin. Does not give a greasy or wet feel.

The amount of superabsorbent resin contained in the bag portion 8 is
The amount of the super absorbent resin is preferably such that the inside of the bag portion 8 can be filled to the full in the swollen state, and about 0.5 to 2 g is appropriate for each bag portion 8.

[0025]

The cooling garment of the present invention has a small amount of superabsorbent resin contained in the bag portion 8 when it is not used, and the garment does not become bulky, is light and compact as a whole, and is easy to carry and transport. It is convenient for storage.

When using this cooling garment, first, the cooling garment is dipped in cold water to swell the superabsorbent resin by absorbing the cold water. The water used is preferably sufficiently cold water such as ice water, but uncooled tap water or the like may be used as it is.

When the super absorbent resin has sufficiently absorbed water and swelled, the cooling clothes are taken out of the water and squeezed tightly. It is preferable to cool the cooling clothes in a refrigerator or the like before use.

In this state, the cooling suit is worn. The cooling garment is preferably worn directly on the bare skin, but it can be worn over the underwear.

The cooling garment of the present invention cools the wearer's body by the heat capacity of the superabsorbent resin that has absorbed water, and the water absorbed by the superabsorbent resin gradually evaporates, and the latent heat of vaporization cools the body. Persists.

When the cooling garment of the present invention is worn and operated in a high temperature atmosphere, it is heated violently from the outside, so that the temperature of the superabsorbent resin rises and a sufficient cooling action cannot be expected. However, in such a case, the removed cooling clothes can be reused by cooling them in a refrigerator or the like.

By drying the cooling garment after use in a shade with good ventilation, the water absorbed by the superabsorbent resin evaporates and dries in a few days, returning to a light and compact state for reuse. It is possible.

[0032]

According to the present invention, in the unspecified state, the superabsorbent resin in the bag portion 8 does not absorb water and is in a small amount of powder or granules, so that it is light and compact.
Easy to handle during transportation and storage.

When the cooling suit is soaked in water at the time of use, the superabsorbent resin absorbs a large amount of water and swells, and has a large heat capacity. Can be cooled.

When the temperature of the superabsorbent resin that has absorbed water rises, water evaporates through the bag portion 8 and the latent heat of vaporization suppresses the temperature rise, so that the cooling effect is maintained for a long time.

Therefore, according to the present invention, the superabsorbent resin not only functions as a cold insulating material in the conventional cooling clothing and performs a cooling operation based on its heat capacity, but also a cooling effect by the latent heat of vaporization of absorbed water. It does not necessarily have to be chilled in advance, and the cooling effect lasts for a long time.

Further, as the highly water-absorbent resin, a bead-shaped resin having a coefficient of expansion of 1.5 times or more when absorbing water is used, so that the water-absorbent resin exhibits a smooth bead-like state in the water-absorbed state. The absorbed gel does not leak from the bag portion 8 and the skin feels smooth and does not feel wet so that it can be worn comfortably.

Further, since the super absorbent resin as described above has a large amount of voids between the beads, it has a large surface area and a high evaporation rate of absorbed water, so that the cooling effect by evaporation of water is large. Become.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a cooling suit of the present invention.

FIG. 2 is a perspective view showing a use state of the cooling suit of the present invention.

[Explanation of symbols] 1 Cooling clothes 8 Bag part

Claims (3)

[Claims] 1. A cooling garment characterized in that a bag portion (8) having water permeability is formed on an inner surface or an outer surface of a garment and a super absorbent resin is contained in the bag portion (8). 2. Cooling suit according to claim 1, characterized in that the bag (8) is made of a hydrophobic material. 3. The cooling garment according to claim 1, wherein the highly water-absorbent resin is in the form of beads and has an expansion ratio of 1.5 times or more when absorbing water.