| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a heat insulator excellent in heat insulating performance by providing a single layer or plural layers of mesh-like sheets formed on a heat-ray reflecting sheet and heat insulating sheets having hollow vacuum particles arranged in a void part in a plane of its mesh-like sheets. SOLUTION: A mesh-like sheet 3 is laminated on a heat-ray reflecting sheet 2, and a void part is regularly arranged in a plane of the mesh-like sheet 3. As a result, when hollow vacuum particles 4 are arranged, at least a part of the hollow vacuum particles 4 is housed in partitioned void parts in the void part, and a position of the hollow vacuum particles 4 can be easily fixed. When metallic foil such as aluminium and copper is used as the heat-ray reflecting sheet, a heat-ray reflecting film may be a film thickness of about several hundred nm. The size of the void part is desirable to be a range of abut severalμm to several mm when expressed by a square root of the void part area. When a textile constituted of a latitudinal fine line and a longitudinal fine line is used, a necessary condition for the mesh-like sheet such as flexibility can be easily attained.</p> |
