Abstract: A vacuum insulation panel for a construction, a car or an electric appliance includes a vacuum insulation panel in which a core material made of inorganic fibers is wrapped with an outer packaging material made of a stainless steel plate, and an inner space of the outer packaging material wrapping the core material is in a vacuum state, wherein a water content of the core material is 0.05 wt % or less, the surface roughness Ra of the inner space-side surface of the outer packaging material is 0.2 ?m or less, and a peripheral part of the outer packaging material is sealed by welding in a state in which the pressure of the inner space of the outer packaging material is 1 Pa or less.

Abstract: Provided is a vacuum thermal insulation material which is capable of maintaining a vacuum for a long period of time in a high temperature range. The present invention relates to a vacuum thermal insulation material which comprises a core material and an envelope in which the core material is sealed. The envelope comprises thermal fusion bonding layers, and the thermal fusion bonding layers that face each other at an end portion of the envelope are thermally fused to each other, thereby forming a sealed portion. The core material has a first main flat surface that is exposed to the relatively high temperature side when in use and a second main flat surface that faces the first main flat surface and is exposed to the relatively low temperature side when in use. At least a part of the sealed portion is arranged on the second main flat surface side.

Abstract: Provided is a vacuum thermal insulation material which is capable of maintaining a vacuum for a long period of time in a high temperature range. The present invention relates to a vacuum thermal insulation material which comprises a core material and an envelope in which the core material is sealed. The envelope comprises thermal fusion bonding layers, and the thermal fusion bonding layers that face each other at an end portion of the envelope are thermally fused to each other, thereby forming a sealed portion. The core material has a first main flat surface that is exposed to the relatively high temperature side when in use and a second main flat surface that faces the first main flat surface and is exposed to the relatively low temperature side when in use. At least a part of the sealed portion is arranged on the second main flat surface side.