| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vacuum heat insulating material with a plurality of core materials, having a wider effective heat insulating area and improved heat insulating performance. <P>SOLUTION: The vacuum heat insulating material 8 comprises, at least, the plurality of core materials 9, a cover material 10, and an isolating film 11 which can be thermally welded to a thermally welded layer of the cover material. The plurality of core materials 9 are isolated from one another in two or more independent vacuum spaces by the isolating film 11. The adjacent core materials 9a, 9b are simply isolated from each other by the isolating film 11, and so a clearance between the core materials can be narrowed to a clearance corresponding to the thickness of the film. Thus, the vacuum heat insulating material has improved heat insulating performance because of less heat leak from a gap between the core materials 9a, 9b and a wider effective heat insulating area. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
