JPH0338629Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an insulating box body in which a vacuum insulating panel is attached to the inner surface of an outer box, and a foamed heat insulating material is injected and foamed between the outer box and the inner box.

[Conventional example]

In the conventional heat insulating box body, as shown in FIG. 1, a vacuum heat insulating panel 2 is fixed to the inner surface of an outer box 1 with double-sided tape 3 having cushioning properties, and then an inner box is attached to the outer box 1. 4, the foam insulation material 5 was injected and foamed between the outer box 1 and the inner box 4 as shown in FIG. Since the double-sided tape 3 was pasted, even if the vacuum insulation panel 2 was pressed against the outer box 1 side by the foaming pressure of the foam insulation material 5, the vacuum insulation panel 2 and the outer case 1 would not connect as shown in FIG. A void 6 is formed between the outer case 1 and the outer case 1, which causes the outer box 1 to become stiff and the heat insulation performance to deteriorate.

〔the purpose〕

The present invention uses the foaming pressure of the foam insulation material to bring the vacuum insulation panel into close contact with the inner surface of the outer box, thereby preventing the outer box from becoming sagging or deteriorating its insulation performance.

〔Example〕

11 is an outer box made of a metal plate, 12 is an inner box made of a synthetic resin material, 13 is a vacuum insulation panel, 1
4 is a foamed heat insulating material that is filled and foamed between the outer box 11 and the inner box 12.

The vacuum insulation panel 13 is made by mounting an inorganic powder such as perlite, a foam with open cells, or a laminate made of a heat reflecting plate and a shielding material in a bag-shaped sealed container made of a composite laminate film made of metal, plastic, etc. A recess 15 is formed around the entire circumference of one side.

Reference numeral 16 denotes a double-sided tape made of a material having cushioning properties, and is used to seal the recess 1 of the vacuum insulation panel 13.
5, and the vacuum insulation panel 13 is fixed to the inner surface of the outer box 11 using its outer adhesive surface. Before the foamed insulation material 14 is filled between the outer box 11 and the inner box 12 and foamed, there is a slight gap 1 between the outer box 11 and the vacuum insulation panel 13 as shown in FIG.
However, after the foam insulation material 14 is filled and foamed, the foaming pressure pushes the vacuum insulation panel 13 toward the inner surface of the outer box 11, as shown in FIG. and are now in close contact with each other.

That is, the double-sided tape 16 contracts when the foaming pressure of the foam insulation material 14 is applied to provide cushioning properties, and the dimension that protrudes from the vacuum insulation panel 13 is absorbed into the recess 15 of the vacuum insulation panel 13, and the double-sided tape 16 The bonding surface is the same as the outer box side bonding surface of the vacuum insulation panel 13.

〔effect〕

As described above, the present invention provides an insulating box body in which a vacuum insulation panel is attached to the inner surface of the outer box, and a foam insulation material is injected and foamed between the outer box and the inner box. A recess is provided on the surface facing the
A double-sided tape with cushioning properties is installed in the recess, and the outer surface of the double-sided tape is used to attach the vacuum insulation panel to the inner surface of the outer box, and the foaming pressure of the foam insulation material causes the vacuum insulation panel to Because one side is in contact with the inner surface of the outer box, there is no gap between the outer box and the vacuum insulation panel, which is the case with conventional panels, and it is possible to prevent the outer box from becoming sluggish or from deteriorating its insulation performance. This can produce a remarkable effect.

[Brief explanation of the drawing]

Figures 1 and 2 are enlarged cross-sectional views of the main parts of a conventional insulation box, the former being before filling with foam insulation material;
The latter shows the state after filling with foam insulation material. Fig. 3 is a schematic sectional view of the inventive insulating box, Fig. 4 is an external perspective view of a vacuum insulating panel used in the insulating box, and Fig. 5 is a sectional view taken along the line A-A' in Fig. 4.
FIG. 6 is an explanatory view of the main part before the foamed heat insulating material is injected and foamed, and FIG. 7 is an explanatory view of the main part after the foamed heat insulating material is injected and foamed. 11: Outer box, 12: Inner box, 13: Vacuum insulation panel, 14: Foam insulation material, 15: Recess, 16: Double-sided tape.

Claims (1)

[Scope of utility model registration request] In an insulating box body in which a vacuum insulation panel is attached to the inner surface of the outer box and a foamed insulation material is injected and foamed between the outer box and the inner box, a recess is formed on the surface of the vacuum insulation panel facing the inner surface of the outer box. A double-sided tape with cushioning properties is attached in the recess, and a vacuum insulation panel is attached to the inner surface of the outer box using the outer surface of the double-sided tape, and the vacuum insulation panel is sealed by the foaming pressure of the foam insulation material. An insulating box body characterized by having one side of the panel in contact with the inner surface of the outer box.