OUTER PACKAGING MEMBER FOR VACUUM HEAT INSULATING MEMBER, VACUUM HEAT-INSULATING MEMBER, AND ARTICLE PROVIDED WITH VACUUM HEAT-INSULATING MEMBER

摘要

Provided is an outer packaging member for a vacuum heat-insulating member, the outer packaging member being capable of forming a vacuum heat-insulating member with which it is possible to maintain heat insulation performance over a long period of time even in high temperatures. An outer packaging member for a vacuum heat-insulating member, said outer packaging member having a heat-sealable film and a gas barrier film, wherein said outer packaging member is characterized in that the gas barrier film has a plastic substrate and a gas barrier layer disposed on at least one side of the plastic substrate, and after the ambient temperature has been changed from 20°C to 145°C and the ambient temperature has then been held for one hour at 145°C, the rate of change in the dimensions of the outer packaging member for a vacuum heat-insulating member is no more than 1% when the ambient temperature is changed from 145°C to 20°C, when using, as a reference, the dimensions of the outer packaging member for a vacuum heat-insulating member when the ambient temperature is 20°C.