| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a vacuum heat insulation material having high heat insulation performance by preventing occurrence of an air layer with poor heat insulation performance when attached to a heat insulation box body, and the heat insulation box body.SOLUTION: In a vacuum heat insulation material 101, a fin part folding groove 105 is formed on an outer peripheral part on a surface of the vacuum heat insulation material 101, and a fin part 104 is folded so as to overlap and closely contact the fin part folding groove 105. As the fin part 104 can be prevented from protruding to the surface part of the vacuum heat insulation material 101, occurence of an air layer can be reduced even when the surface part of the vacuum heat insulation material 101 in which the fin part 104 is folded is bonded to an outer box or an inner box of a heat insulation box body.</p> |
