| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vacuum heat insulation material having high heat insulation performance and a heat insulation box body using this material, superior in handling performance in laying, without cracking and tearing an external facing bag body, even if large stress is applied to a wall surface stuck with the vacuum heat insulation material. <P>SOLUTION: In the bag body 2 composed of a gas barrier film having a thermal welding layer, a continuous foam hard plastic foaming body is arranged on both obverse-reverse surfaces of a layer composed of any of organic or inorganic fiber or powder or a combination of these. A core material of at least a three-layer constitution is stored. The whole vacuum heat insulation material (t) of sealing the inside under reduced pressure, is heated to the temperature higher by about 5 to 35°C than a melting point of the thermal welding layer under atmospheric pressure. A non-welded part of the film along a shape of the core material 1, the thermal welding layer of the film and a surface of the core material are thermally welded. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
