JPH0727835U - Insulation - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a heat insulating material having excellent heat insulating effect and strength. [Structure] Backup material layers 3 and 3 and outer surface material layers 4 and 4 are provided on both surfaces of a foam layer 2 having a predetermined thickness to form a heat insulating material 1, and the foam layer 2 exhibits a heat insulating effect. The back-up material layers 3 and 3 and the outer surface material layers 4 and 4 maintain the strength of the heat insulating material 1, and the hard outer surface materials 4 and 4 respond to external impact and pressure.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat insulating material that constitutes a storage case, a case, or the like for keeping cold and keeping warm.

[0002]

[Conventional technology and problems to be solved]

 For example, in the case of a cold insulation case installed on the bed of an automobile, it is necessary to cover the peripheral wall with a heat insulating material layer in order to improve the cold insulation efficiency. For this purpose, various heat insulating materials have been conventionally proposed. However, there were problems such as weak strength and low heat insulation effect.

Therefore, an object of the present invention is to provide a heat insulating material that is strong in strength and excellent in heat insulating property.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention adopts a structure in which a backup material layer and a hard outer surface material layer are laminated on both sides of a foam layer having a predetermined thickness.

[0005]

[Action]

 A foam layer with a specified thickness exerts a heat insulating effect, and the backup material layer and outer surface material layer laminated on both sides of this foam layer maintain strength against external impacts and pressures, satisfying both heat insulation and strength. It will be done.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in the figure, a heat insulating material 1 used as a material for a box or case for keeping heat or cold is a backup material layer 3 on both sides of a foam layer 2 having a predetermined thickness and a hard outer surface on the outside thereof. The material layers 4 and 4 are laminated.

The foam layer 2 is made of styrene resin such as polyurethane or polystyrene, and the shape and expansion ratio of the bubbles are set so that the heat insulating effect can be obtained. The thickness of the foam layer 2 is determined according to the usage conditions. Although it may be done, it is molded to a thickness of, for example, about 50 mm.

The backup material layers 3 and 3 not only improve the adhesion between the foam layer 2 and the outer surface material layers 4 and 4 but also serve to reinforce the heat insulating material 1. For example, a hard resin such as polypropylene is used. Has been done.

The outer surface material layers 4 and 4 are hard and have low thermal conductivity and are excellent in strength against external impact, for example, aluminum foil or fiber reinforced plastic, and are used as backup material layers 3 and 3. Then, they are laminated and fixed by means such as adhesion.

The heat insulating material of the present invention has the above-described structure, and is used, for example, in the structure of a cold insulation box provided on the bed of an automobile. In this case, the heat insulating material 1 is formed on the inner surface of the cold insulation box. Aluminum foil is used for the outer surface material layer 4 on one side and fiber reinforced resin is used for the other surface material layer 4 on the other side which is also the outer surface.

The cold insulation box formed by using this heat insulating material 1 has an excellent cold insulation function due to the heat insulating effect of the foam layer 2, and the inner and outer surfaces are covered with the hard outer surface material layers 4 and 4, so that the strength is improved. Will be excellent.

[0013]

[Effect of device]

 As described above, according to the present invention, the backup material layer is provided on both sides of the foam layer and the outer surface material layer is provided on the outer side thereof. It has both a function and strength against external impact and pressure, and can be widely used as a material for boxes and cases for keeping cold and keeping warm.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a heat insulating material according to the present invention.

[Explanation of symbols]

 1 heat insulating material 2 foam layer 3 backup material layer 4 outer surface material layer

Claims (1)

[Scope of utility model registration request] 1. A heat insulating material in which a backup material layer and a hard outer surface material layer are laminated on both sides of a foam layer having a predetermined thickness.