VACUUM HEAT INSULATING MATERIAL, AND HEAT-RETAINING AND COLD-KEEPING APPARATUS AND BUSINESS EQUIPMENT APPLIED WITH VACUUM INSULATING MATERIAL

摘要

PROBLEM TO BE SOLVED: To maintain heat insulating performance of a heat insulating material over a long period of time by adopting a configuration of an outer cover material having high gas barrier property.;SOLUTION: A configuration of the outer cover material 13 of the heat insulating material 12 includes at least an evaporated layer 18 and a polyacrylic acid base resin layer 19 adjacent to the evaporated layer 18. The polyacrylic acid base resin layer 19 is formed by a mixture of a polyalcohol-based polymer and a polyacrylic acid-based polymer. By forming the polyacrylic acid base resin layer 19 by a mixture of a polyalcohol-based polymer and a polyacrylic acid-based polymer, a dense crosslinking structure can be achieved. As a result, an outer cover material having excellent gas barrier property can be obtained.;COPYRIGHT: (C)2006,JPO&NCIPI