VACUUM HEAT INSULATION MATERIAL, HEAT INSULATION BOX USING VACUUM HEAT INSULATION MATERIAL, APPARATUS USING VACUUM HEAT INSULATION MATERIAL AND MANUFACTURING METHOD FOR VACUUM HEAT INSULATION MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a vacuum heat insulation material capable of preventing bag breakage of an outer packaging material while suppressing deterioration of a heat insulation property according to groove formation, a heat insulation box and an apparatus using the vacuum heat insulation material, and a manufacturing method.SOLUTION: In a vacuum heat insulation material, a core material 4 is sealed in an outer packaging material 2 having a gas barrier property. The vacuum heat insulation material has a square folding part 11a, and a plurality of strips of grooves 5a extending to both end parts in a width direction are formed at a corner part inside the square folding part 11a. At least from an outer surface 11b to a side surface 11c and an inner surface 11d of both end parts in the width direction in the square folding part 11a, a resin tape 13 having a heat insulation property is attached.