JPS6035021Y2 - Simple cold storage body - Google Patents

Description

[Detailed description of the invention] This invention can be used in places without electrical refrigeration equipment.
The present invention relates to a simple cold storage body used for cooling food in a cold storage box or a cold storage car, for small-lot delivery using a cold storage box, for cooling a leisure cooler box, or as a cold compress for medicine.

Conventionally, this type of regenerator is a regenerator that is in a liquid state at room temperature, but when cooled, it loses its heat and becomes solid.The regenerator is stored in a soft or hard plastic bag, a plastilada molded container, or an aluminum can container. It is formed by sealing it in another container and is used by freezing it in a freezing device such as an electric freezer or refrigerator.

However, the various types of regenerators mentioned above have problems with strength, durability, or material change over time during use, and in the case of aluminum cans, etc., when enclosing a regenerator in which the metal tends to oxidize, it is necessary to There were drawbacks such as the need for anti-corrosion treatment, which increased the number of manufacturing steps and increased the unit price of the finished product.

This idea was made in view of the above-mentioned circumstances, and involves a cold storage body with good heat conductivity, durability, and a shape that is easy to store and handle. The present invention provides a simple cold storage body in which a low-viscosity liquid cold storage agent is sealed in a container made of a composite film laminated with at least one layer.

Hereinafter, embodiments of this invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a cold storage body according to this invention, and this cold storage body 1 has a low-viscosity liquid cold storage agent 3 sealed in a container formed from a composite film 2, as shown in the cross-sectional view of FIG. ing.

As shown in FIG. 3, the composite film 2 has a structure in which an aluminum foil 4 is used as a core material, and one or more plastic films 5 and 6 are laminated on the top and bottom surfaces of the aluminum foil 4, of which the plastic film 6 is the inner layer. A thermocompression bondable plastic is used, and the container is formed by thermocompression bonding the same opposing films.

The outer plastic film 5 laminated on the top surface of the aluminum foil 4 has low-temperature properties (such as nylon).
Using a plastic film with excellent tensile strength and puncture resistance is effective in preventing damage to the regenerator during use.

In addition, the inner layer plastic film 6 is made of a plastic film such as low-density polyethylene that can be easily thermocompressed and has excellent low-temperature properties such as strength and impact resistance, which facilitates processes such as bag making and sealing after filling with liquid. The purpose is to make it possible to carry out various operations, and to maintain the strength of the container.

Furthermore, the core material of the aluminum foil 4 has the effect of maintaining the shape of the container by giving it appropriate hardness and tension when the container is molded, and preventing extreme deformation even when the cold storage agent 3 is in a liquid state. It improves sealing performance by preventing film permeability and liquid leakage due to pinholes, and its light-shielding properties protect the inner layer plastic film 6 to prevent aging, especially in order to prevent liquid leakage from occurring due to damage to the thermocompression bonding part. It is effective in preventing.

Here, the liquid cool storage agent 3 is water or carbonated water based and mixed with additives such as organic or inorganic salts such as alcohol, glycol, propylene glycol, polyethylene glycol, and sodium chloride, and has a melting point of the above cold storage agent. By adjusting the ingredients, blending, and amount of the additives added, it is possible to design an appropriate temperature range according to the application.

As explained in detail above, the simple regenerator of this invention is a container formed by thermo-compression bonding of a laminated composite film in which an aluminum foil core material is sandwiched between plastic films having respective functions. in,
The thickness of the exterior can be made relatively thin.

Therefore, it does not adversely affect heat conduction, freezes quickly, and has a fast-acting cooling effect during use.

In addition, by combining aluminum foil, airtightness is improved, and in particular, it prevents deterioration due to ultraviolet irradiation and provides durability, which is a superior feature compared to just a conventional plastic jacket, making it lightweight and easy to handle. is good.

Furthermore, by combining aluminum foil with appropriate hardness and tension, it is easy to fill the low-viscosity liquid refrigerant, and the heat conduction through convection is good, resulting in fast-acting freezing and cooling effects. It has practical effects such as:

The simple cold storage body according to this invention can be mass-produced at low cost, can be used in things such as gifts that require cooling, and has the advantage of being disposable.

The regenerator according to this invention is extremely convenient because it can be cut into any length and size depending on the application if it is formed as shown in Figure 4. If the tape 7 or the like is attached, the scope of use can be expanded, such as being able to be used as a medical cold compress material by wrapping it around an affected area or by rolling it into a Katsura shape.

[Brief explanation of the drawing]

Figure 1 A9 and C are perspective views of a cold storage body showing one embodiment of this invention, Figure 2 is a sectional view of Figure 1, Figure 3 is an enlarged view of the main parts of Figure 2, and Figure 4. A9 is a perspective view showing another application example of this invention. 1... Cold storage body, 2... Composite film, 3... Cold storage agent, 4... Aluminum foil core material, 5, 6... ...Plastic film.

Claims (1)

[Scope of utility model registration request] A composite film is formed by laminating aluminum foil as a core material and at least one or more layers of plastic films on the top and bottom of this core material, and the composite films are bonded together by thermocompression bonding or the like to bond the opposing plastic films to each other. A simple cold storage body characterized by a molded container filled with a low-viscosity liquid cold storage agent.