VACUUM HEAT INSULATING MATERIAL, CORE MATERIAL FOR VACUUM HEAT INSULATING MATERIAL AND ITS PRODUCING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a vacuum heat insulating material excellent in heat insulating performance, a core material for the vacuum heat insulating material and its producing method.

SOLUTION: This vacuum heat insulating material is constituted by decompressing and sealing the core material comprising an inorganic fiber laminated material in a skin material. The density of the core material in the vacuum heat insulating material is 200 to 270 kg/m3, and the core material after opening the skin material includes 75% or more of inorganic fiber having a fiber length of 100μm or more.

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