| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum heat insulating material capable of holding a thermal conductivity for a long period of time even when it is stored in space containing a lot of moisture.SOLUTION: The vacuum heat insulating material, which is provided, at least comprises a core material, a moisture adsorbing material, a gas adsorbing device and an external coating material. The core material, the moisture adsorbing material and the gas adsorbing device are coated with the external coating material, and the inside of the vacuum heat insulating material is decompressed. The gas adsorbing device has a through-hole which introduces the air outside of a gas hardly-permeable container into the gas hardly-permeable container. The through-hole for introducing the air outside of the gas hardly-permeable container into the gas-hardly-permeable container is at least covered with a coating material which delays the permeation of moisture. |
