| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vacuum heat insulator which can keep excellent heat insulating performance for a long time. <P>SOLUTION: The vacuum heat insulator is configured such that a core material is contained in a bag having a gas barrier laminated material A and a gas barrier laminated material B overlying its respective surfaces respectively, and is wrapped by vacuum sealing. The gas barrier laminated material A is composed of a laminated body overlaid with metal foil layers. The gas barrier laminated material B is composed of a laminated body overlaid with a reinforcing film, other barrier film A, and a sealant layer on the barrier film A overlaid with the gas barrier film layer composed of vapor deposited thin film layer of aluminum oxide having a tilting structure continuously changing within the range of an atomic ratio of (aluminum/oxygen)=(1/2 to 1/1) in the direction of the film thickness from an elongated film side and the material containing water soluble polymer and metal alkoxide of one or more kinds or its hydrolysate on the surface treated layer surface of the elongated film having the surface treated layer for improving adhesive property. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
