Vacuum insulation material and insulation structure for refrigerator cabinet having the same

Abstract

A vacuum insulation material includes a core material, and a wrapping member configured to cover the core material, the wrapping member provided with an outermost layer externally exposed, a barrier layer laminated beneath the outermost layer, and a thermal bonding layer disposed beneath the barrier layer and contacting the core material, wherein the barrier layer comprises at least one polyimide film, on which an inorganic layer is laminated. With the configuration, the wrapping member of the vacuum insulation material can be more resistant to high temperature such that the vacuum insulation material can be safe from the risk of deformation, resulting in enhancing reliability of insulation efficiency.

1 . A vacuum insulation material comprising: a core material; and a wrapping member configured to cover the core material, the wrapping member comprising an outermost layer externally exposed, a barrier layer laminated beneath the outermost layer, and a thermal bonding layer disposed beneath the barrier layer and contacting the core material, wherein the barrier layer comprises at least one polyimide film, on which an inorganic layer is laminated. 
     
     
         2 . The material of  claim 1 , wherein the inorganic layer is a laminated aluminum foil. 
     
     
         3 . The material of  claim 1 , wherein the inorganic layer is that aluminum is laminated on the polyimide film through vacuum-Al metalizing. 
     
     
         4 . The material of  claim 1 , wherein the barrier layer comprises at least one polyimide film having a laminated aluminum foil, and at least one polyimide film having a vacuum-metalized aluminum. 
     
     
         5 . An insulation structure for a refrigerator cabinet comprising: an outer surface and an inner surface of the refrigerator main body; and an insulating unit formed between the outer and inner surfaces of the refrigerator cabinet, wherein the insulating unit comprises a polyurethane foam layer, and a vacuum insulation material according to  claim 1 . 
     
     
         6 . An insulation structure for a refrigerator cabinet comprising: an outer surface and an inner surface of the refrigerator main body; and an insulating unit formed between the outer and inner surfaces of the refrigerator cabinet, wherein the insulating unit comprises a polyurethane foam layer, and a vacuum insulation material according to  claim 2 . 
     
     
         7 . An insulation structure for a refrigerator cabinet comprising: an outer surface and an inner surface of the refrigerator main body; and an insulating unit formed between the outer and inner surfaces of the refrigerator cabinet, wherein the insulating unit comprises a polyurethane foam layer, and a vacuum insulation material according to  claim 3 . 
     
     
         8 . An insulation structure for a refrigerator cabinet comprising: an outer surface and an inner surface of the refrigerator main body; and an insulating unit formed between the outer and inner surfaces of the refrigerator cabinet, wherein the insulating unit comprises a polyurethane foam layer, and a vacuum insulation material according to  claim 4 .