VACUUM HEAT INSULATOR AND TESTING METHOD FOR THE GLASS FIBER LAMINATE TO BE USED IN THE INSULATOR

摘要

Vacuum insulator (2) includes core member (3) and jacket (4) which covers core member (3). Jacket (4) is decompressed its interior and core member (3) includes a glass-fiber laminated unit. The glass fiber is formed of reinforced glass-fiber which is low brittle and its fiber strength is reinforced. This structure allows improving the heat insulating performance as well as lowering the material cost of vacuum insulator (2).