JPH09280481A - Heat insulative hot and cold reserving sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulative hot and cool reserving sheet for foods and beverages requiring heat reserving and cold reserving, and a heat insulative hot and cold reserving container making use of the sheet. SOLUTION: An airtight sheet 4 in which a film 3 having impermeability is stuck is formed on at least one surface of an airtight chamber forming net 2 for forming a heat insulative air chamber 1, and a heat insulative hot and cold reserving sheet 5 is constituted by laminating the airtight chamber sheets 4. When a heat insulative heat and cold reserving container is constituted, the heat insulative hot and cold reserving sheet is stuck and molded on a base material, and the heat insulative hot and cold reserving container is constituted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating and cold insulating sheet, and more particularly to a heat insulating and cold insulating sheet for use in heat and cold keeping of foods, etc. The present invention relates to a heat insulating / cold container that can be configured.

[0002]

2. Description of the Related Art Several types of heat insulating and heat retaining sheets have hitherto been available on the market, but most of them use synthetic resin-based materials as constituent materials, so they are harmful to post-treatment after use. Problems have come along. In addition, the high cost due to the process and material is unavoidable, and there is a problem in its spread.

There is a demand for a simple heat-insulating and heat-insulating sheet which is inexpensive and has a heat-retaining effect and does not cause pollution problems in post-treatment, and a container formed by using the sheet.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and does not provide a heat insulating and cold insulating sheet that is inexpensive and has a high heat insulating effect, and a heat insulating and cold insulating container formed by using the sheet. It is what

[0005]

The above problems can be solved by the following means. A description will be given below with reference to the accompanying drawings.

(1) An air chamber sheet (4) is formed by laminating a gas-impermeable film (3) on at least one surface of the air chamber forming net (2) forming the heat insulating air chamber (1). Then, the air chamber sheet (4) is laminated to form a heat insulation / heat insulation sheet (5). (2) In the case of forming the heat insulation / cooling container (6), the heat insulation / cooling sheet (5) is attached to the base material (7) and molded to form the heat insulation / cooling container (6).

[0007]

According to the structure of the present invention, the air chamber of the air chamber sheet formed by the mesh of the air chamber forming net sandwiched between the air-impermeable films forms a heat insulating layer to block the conduction of heat. By stacking the air chamber sheets, a further heat insulating effect can be exhibited. At the time of use, it is sufficient to wrap a warm product such as a bento and a frozen / refrigerated product such as ice cream, which have been purchased, with the heat insulating / cooling sheet of the present invention in the manner of a furoshiki. In addition, bottles, cans, and products to be refrigerated that are sold at vending machines or the like are stored in an adiabatic heat insulation container to maintain the temperature.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a partially enlarged sectional perspective view showing the basic structure of the heat insulating / cooling sheet of the present invention. FIG. 2 is a partial cross-sectional perspective view of the heat insulation / cooling container of the present invention.

Example 1 (1) An air chamber sheet (4) having a breathable film (3) attached to one surface of an air chamber forming net (2) forming an adiabatic air chamber (1) is formed. . Next, the air chamber sheet (4) is laminated to form a heat insulating and cold insulating sheet (5). The heat insulation / cold insulation sheet (5) having such a structure is used to wrap a food requiring heat insulation or cold insulation. (2) The air chamber forming net (2) has a mesh size of 5 mm x 5 m.
As shown in the partially enlarged cross-sectional perspective view of FIG. 1, using a sheet having a thickness of 1 mm and a thickness of 1 mm, a vinyl film is laminated on one side and laminated in two layers, and laminated on a non-woven fabric to insulate and keep heat and heat ( 5) was constructed. (3) A cup of coffee sold by a vending machine filled with hot water was wrapped with the heat insulating and cold insulating sheet (5), and the temperature change of the hot water was examined. For comparison, a can of the same standard was filled with hot water of the same temperature, and the temperature change of the hot water was examined. As a result, Table 1 was obtained.

Example 2 (1) In the case of constructing the heat insulation and cold insulation container (6), the heat insulation and cold insulation sheet (5) is attached to the base material (7) to form the heat insulation and cold insulation container (6). To do. In order to deliver and carry the heat-required heat and refrigerating-required food, the product may be stored and used in an adiabatic heat-retaining container (6). (2) Base material (7) has a thickness of 1 mm and an inner diameter of 50
Using a paper tube having a length of 120 mm and a length of 120 mm, an adiabatic heat insulation / cooling sheet (5) was attached to the outside of the paper tube to form a heat insulation / cooling container (6). (3) Hot water of 48 ° C. and 100 CC in a vinyl bag was stored in the heat insulation / cooling container (6), and the temperature change of the hot water was examined. (4) For comparison, a vinyl bag filled with hot water of the same temperature was housed in a paper tube of the same standard, and the temperature change of the hot water was examined. Table 2 shows the results.

[00011]

[Table 1]

[00012]

[Table 2]

[00013]

[Table 1]

[Table 2]

As described above in detail, the present invention has a simple structure, can be manufactured at a low cost, and technically all materials can be made of paper, and can prevent pollution caused by disposal after use. With no problems, it is possible to develop a variety of hard and soft product forms according to the purpose of use, and it has a structure that can fully exhibit the desired function of heat insulation and cooling.

[Brief description of drawings]

FIG. 1 is a partially enlarged sectional perspective view of a heat insulating / cooling sheet according to the present invention.

FIG. 2 is a partial cross-sectional perspective view of the heat insulation / cooling container of the present invention.

[Explanation of symbols] 1 Insulated air chamber 2 Air chamber forming net 3 Breathable film 4 Air chamber sheet 5 Insulated heat insulation cold insulation sheet 6 Insulation heat insulation cold insulation container 7 Base material

Claims (2)

[Claims] 1. A heat insulating layer is formed by laminating a sheet obtained by laminating a non-breathable film on at least one surface of an air-chamber forming net, and as a result, a sheet capable of forming an air chamber in which small mesh sections are independent. Insulated heat insulation cold insulation sheet characterized by being. 2. An adiabatic heat insulation and heat insulation container constructed by using a sheet obtained by laminating the heat insulation and heat insulation and heat insulation sheet according to claim 1 on a base material.