JPH0640778U - Cool storage - Google Patents

Abstract

(57) [Summary] [Object] To provide a regenerator which not only prevents dew condensation on the surface of the regenerator but also suppresses leaching of water due to the dew condensation to the surface of the regenerator. In a cool storage body (10) in which a liquid or gelled cool storage agent (12) is enclosed in a water-impermeable bag body (11), the outer surface of the bag body is a surface layer made of a breathable nonwoven fabric (17) made of waterproof fiber. 15 and a water absorbing layer 16 made of a water absorbing material 18 inside thereof.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a regenerator.

[0002]

[Prior art]

 Conventionally, as a substitute for ice, a cool storage body in which a cool storage agent is enclosed in a synthetic resin bag has been known. This regenerator is economical because it can be repeatedly used by putting it in an ice box or ice pillow by freezing the regenerator in a freezer or the like. However, since the bag body of such a regenerator does not have water absorbency, the moisture in the air condensed due to the difference between the regenerator and the outside temperature adheres to the surface of the bag as water droplets, so-called dew condensation. The water droplets sometimes adhered to and wet the article kept cold. In addition, if the article is one that easily absorbs water such as food, it may be altered.

Therefore, in order to prevent dew condensation on the surface of the regenerator, for example, a regenerator disclosed in Japanese Utility Model Laid-Open No. 64-16575 has been proposed. This cold storage body is a cold storage body in which a liquid or jelly-like cold storage agent is enclosed in a water-impermeable bag body, and a water-absorbent material layer made of non-woven fabric or the like is integrally attached to the outer surface of the bag body. It is characterized by being done. According to this cool storage body, since the surface of the bag body in which the cool storage agent is enclosed is covered with the layer of the water absorbent material, the water droplets condensed on the surface of the bag body are absorbed by the water absorbent material and are kept cool. Adhesion to an article can be prevented.

However, when water is absorbed, the water-absorbent material is in a wet state. Therefore, when the cold-storage article comes into contact with the cold-storing article, the article also absorbs water and causes deterioration. Further, in such a cool storage body, the surface of the cool storage body is usually in a wet state in order to easily absorb moisture in the air, and when frozen, the moisture content of the surface of another cool storage body in contact with it is frozen. Not only is it difficult to stick them together and pull them away from each other, but it can also damage the bag.

[0005]

[Problems to be solved by the device]

 The present invention has been proposed in view of the above problems, and not only prevents dew condensation on the surface of the regenerator but also suppresses leaching of water due to the dew condensation on the surface of the regenerator. It is the one that seeks to provide the body.

[0006]

[Means for Solving the Problems]

 That is, the present invention relates to a regenerator body in which a liquid or gel regenerator is enclosed in a water-impermeable bag body, and the outer surface of the bag body is a surface layer made of a breathable non-woven fabric made of waterproof fiber. And a water absorbing layer made of a water absorbing material on the inside of the cold accumulating body.

[0007]

[Action]

 The frozen regenerator of the present invention is made of a waterproof fiber that covers the outer surface of the bag even when the moisture in the air is saturated and condensed near the surface of the regenerator during use. It is retained in the inner water-absorbing layer through the layer. Therefore, moisture does not appear on the outer surface of the regenerator and keeps the surface of the regenerator always dry.

[0008]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a sectional view showing an example of the regenerator of this invention.

As shown in FIG. 1, a cool storage body 10 of the present invention has a liquid or gelled cool storage body in a non-permeable bag body 11 having an outer surface covered with a surface layer 15 and a water absorbing layer 16. The agent 12 is encapsulated. The bag body 11 is formed of a water-impermeable synthetic resin film such as polyethylene, polypropylene, or polyvinyl chloride, a metal foil, or the like in a predetermined bag shape. In this embodiment, the bag body 11 has a waterproof layer 13 made of a polyethylene film and a reinforcing layer 14 made of a nylon film laminated on the outer side thereof.

As the cold storage agent 12, an aqueous solution of an inorganic salt such as sodium chloride, ammonium chloride or magnesium chloride, or an aqueous alcohol solution such as methanol or ethanol, or a water-soluble polymer to which a known gelling agent is added is used to form a gel. Are preferable, and these are appropriately selected and used.

The outer surface of the bag 11 is covered with a surface layer 15 and a water absorbing layer 16 formed inside the surface layer 15.

The surface layer 15 is made of a breathable non-woven fabric 17 in which a waterproof fiber is formed into a non-woven fabric. This breathable non-woven fabric 17 is formed by forming waterproof fibers such as polyethylene and polypropylene in the shape of orthogonal or random non-woven fabric, and allows moisture to pass through but does not retain the water. As a result, moisture such as dew condensation retained in the water absorbing layer 16 described later does not appear on the outer surface of the regenerator 10 and the surface of the regenerator 10 can be always kept dry.

As the breathable nonwoven fabric 17 constituting the surface layer 15, the trade name “Nisseki Wallif” (Nisseki Goju Co., Ltd.) and the trade name “Spunbond” (Asahi Kasei) are preferably used. The unit weight of the breathable nonwoven fabric 17 is preferably about 30 to 50 g / m ² . When the basis weight is less than 30 g / m ² , the air permeability is improved but the waterproof property tends to be poor, and when it is greater than 50 g / m ² , the waterproof property is improved but the air permeability is deteriorated.

The water absorbing layer 16 is made of, for example, a water absorbing material 18 in which a water absorbing polymer is attached to a cloth material. This cloth material is for holding the water-absorbent polymer, and various materials can be used. However, from the viewpoint of durability, synthetic fiber or natural fiber is used as the adhesive or the fusion force of the fiber itself. A non-woven fabric that is joined by is preferably used. In this embodiment, a nonwoven fabric made of rayon fiber is used as the cloth material.

Examples of the water-absorbing polymer used in the water-absorbing layer 16 include partially cross-linked starch-modified polymers such as acrylonitrile, acrylamide, acrylic ester, vinyl acetate, and a graft copolymer of starch and starch. Preferably, the water absorbent material 18 is obtained by impregnating the cloth material with the aqueous copolymer solution and drying.

Next, an example of a method of manufacturing the regenerator 10 of the present invention will be described. First, the reinforcing layer 14 and the waterproof layer 13 are laminated on the breathable nonwoven fabric 17 with the water absorbent material 18 interposed therebetween, and the sheets are obtained by adhering them together by an adhesive or heat welding. The two sheets are stacked with the waterproof layer 13 facing inward, and the periphery 19 is heat-welded into a bag shape to form the bag body 11. At that time, an opening (not shown) for injecting the regenerator 12 is formed in a part of the periphery 19. Then, a desired amount of the cold storage medium 10 is obtained by injecting the regenerator 12 into the bag 11 through the opening in an appropriate amount and then sealing the opening by heat welding or the like.

[0017]

[Effect of device]

 As shown and described above, according to the regenerator of the present invention, since the surface layer of the breathable non-woven fabric made of waterproof fiber is formed on the outer surface of the water absorbing layer, the moisture retained in the inner water absorbing layer is formed. Does not seep to the regenerator surface. Therefore, the surface of the regenerator is always dry during use or freezing, and there is no risk of contact with the article to be kept cold and wetting it. Further, even if the regenerators are frozen in a state where they are in contact with each other, they do not stick to each other and damage to the bag can be prevented. In addition, even when used for ice pillows, etc., the surface is dry, so the skin will not get wet and cause discomfort.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a regenerator according to the present invention.

[Explanation of Codes] 10 Regenerator 11 Bag 12 Regenerator 13 Waterproof Layer 14 Reinforcing Layer 15 Surface Layer 16 Water Absorbing Layer 17 Breathable Nonwoven Fabric 18 Water Absorbing Material

Claims (1)

[Scope of utility model registration request] 1. A cool storage body in which a liquid or gelled cool storage agent is enclosed in a water-impermeable bag body, and an outer surface of the bag body is a surface layer made of a breathable nonwoven fabric made of waterproof fiber, and a surface layer thereof. A regenerator characterized by being covered with a water absorbing layer made of a water absorbing material inside.