| 摘要 |
PROBLEM TO BE SOLVED: To remove the problem of heat insulating performance caused by a large gas permeability of a resin, such as polyacrylonitrile (PAN) employed to a plastic vacuum insulation door, heat leakage caused by attaching an aluminum film inside the door, and deterioration of a gas barrier property caused by the provision of a non-contact portion to the aluminum film, resulting in entry of gas from that non-contact portion. SOLUTION: Outer edge portions 11 of an outer plate 5 of a door and an inner plate 7 of the door, respectively, are connected to form a hollow space 13 therebetween. Aluminum films 15, 17 (100-300μm) are arranged inside the space 13 to make it up with these films. The end surfaces of the films 15, 17 which are located on the plate 5 and the plate 7, respectively, are disconnected to provide a non-contact structure consisting of the film 15 on the plate 5 and the film 17 on the plate 7.
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