| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress deterioration of heat insulation performance caused by deterioration of the degree of vacuum due to desorption of adsorbed moisture. <P>SOLUTION: In a vacuum heat insulation material 5 whose inside is vacuumized by sealing a core material 1 with a gas barrier external packing material 2, a laminate film 4 forming the external packing material is composed of a heat deposited layer 8, a gas barrier layer 7, and a scratch-prevention layer 11, the gas barrier layer is formed from a plastic film composed of an ethylene vinyl alcohol copolymer resin, and to one side thereof, aluminum evaporation, alumina evaporation, or silica evaporation is applied, a surface applied with the evaporation is arranged on the heat deposition layer side, and the scratch prevention layer is formed from a plastic film, and to one side thereof, aluminum evaporation, alumina evaporation or silica evaporation is applied, and a surface applied with the evaporation is arranged on the gas barrier layer side. <P>COPYRIGHT: (C)2012,JPO&INPIT |
