SHEATH MATERIAL FOR VACUUM HEAT INSULATION MATERIAL AND VACUUM HEAT INSULATION MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a sheath material for vacuum heat insulation material and a vacuum heat insulation material using the same in which an inter-layer peeling is hardly generated under a low temperature environment and capable of indicating a high durability.SOLUTION: This invention relates to a sheath material for a vacuum heat insulation material having a core material and a sheath material 10 arranged to be oppositely faced to cover the core material and applied for the vacuum heat insulation material having a peripheral edge of the opposing sheath material sealed, the sheath material for the vacuum heat insulation material has at least a gas-barrier layer 1, an inter-layer adhering layer 2 formed on one surface of the gas barrier layer, and a heat deposition layer 3 formed on the surface opposing against a side where the gas barrier layer of the inter-layer adhering layer is arranged, the heat deposition layer has a surface wet tension force measured on the basis of JISK6768 for the surface contacting with the inter-layer adhering layer is 35 dyn/cm or more.SELECTED DRAWING: Figure 1