| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide manufacturing method for a vacuum heat insulating material and a heat insulator showing remarkable working effects. <P>SOLUTION: In the manufacturing method for a sheet-like vacuum heat insulating material having a vacuum layer 3 formed by an outer sheet 1 and an inner sheet 2 and produced between both sheets 1 and 2 by vacuum heat treatment, a heat-resisting interposed object 4 capable of resisting heating caused by vacuum heat treatment is arranged in a space S formed by the outer sheet 1 and the inner sheet 2, a periphery of the outer sheet 1 and a periphery of the inner sheet 2 are joined by welding, and the space S is vacuumed by vacuum heat treatment. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
