Patent ID: 6464313
Filing Date: 2002-10-15
Classification: B29C,F25D,Y10S,Y10T

Abstract:
A for disassembling a vacuum heat insulation box body having a shell constituted by inner and outer boxes, and structural materials disposed in said shell, said inner and outer boxes and said structural materials being fixed by close-contact caused by means of a vacuum, comprising the steps of:cutting a surface of said shell to thereby introduce air into the inside of said shell so as to allow the inside state of said shell to return to an atmospheric pressure state; and separating inner and outer boxes of said shell and said structural materials from each other, wherein in said full vacuum heat insulating box body, a joint portion between said inner and outer boxes is constituted by a grove formed by bending an end edge portion of one of said inner and outer boxes inward in a zigzag configuration, wherein said groove is filled with a liquid substance, and wherein an end side portion is formed in the other of said inner and outer of said boxes so as to be able to be inserted into a deep portion of said groove; wherein said cutting step further comprises providing a notch in an outer surface of said one member having the zigzag bent portion along a position corresponding to said zigzag bent portion; and separating from each other said inner and outer boxes of said shell and said structural materials.