| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat insulating material which has improved moisture adsorption performance and whose reliability can be secured for a long period. <P>SOLUTION: A vacuum heat insulating material 1 is constituted by wrapping a core material 2 and a moisture adsorbent 3 with a barrier material 22 as an outer covering material. At least three or more moisture adsorbents 3 are arranged to be distributed to the right and left from the longitudinal center C of the core material 2. Namely, the moisture adsorbents 3 are not disposed to be concentrated at one location of the core material 2, but are distributed to the right and left from the longitudinal center C of the core material 2 to dispose at least three of them, so that moisture can be uniformly adsorbed in the entire inside of the barrier material 22. Accordingly, speed of moisture adsorption by the moisture adsorbent 3 is increased, the heat insulation performance is improved, and the reliability of the vacuum heat insulating material 1 can be secured for a long period. <P>COPYRIGHT: (C)2013,JPO&INPIT |
