| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve heating insulating performance and planarity in a vacuum heat insulating material covering a plurality of core materials by a covering material having gas barrier performance, and positioning each core material in an independent vacuum space. <P>SOLUTION: In the vacuum heat insulating material 5, the plurality of core materials 6 is covered by the covering material 7 with gas barrier performance, having a heat welding layer on an inner side face, and decompressed and sealed therein, and each of the plurality of core materials 6 is positioned in the mutually independent vacuum space. Since recessed parts of a recessed and projecting face formed by a core material part having the core material 6 between the covering materials 7, and a non-core material part 8 not having the core materials 6 between the covering materials 7 are filled with a heat insulating material 9, heat insulating performance in the recessed part (the non core material part 8) of the recessed and projecting face, and unevenness of a vacuum heat insulating material 5 surface are improved, heat insulating performance as the whole vacuum heat insulating material 5 is also improved, and the vacuum heat insulating material 5 with superior applicability can be provided. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
