| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a laminated film excellent in fire retardancy, and a vacuum heat insulating material. <P>SOLUTION: The outer packaging material 7 of the vacuum heat insulating material is constituted by laminating a thermoplastic resin 9 on the metal foil 3 of the laminated film 1. The laminated film 1 is constituted by successively laminating a first resin film 2, a second resin film 4 and the metal foil 3 from the outside, and the first resin film 2 positioned on the surface of the laminated film 1 (the outer packaging material 7) is characterized in that its limit oxygen index value is 26 or above. The first resin film 2 forms a carbide when it is burnt and the combustion reaction of the second resin film 4 held between the first resin film 2 and the metal foil 3 is suppressed by suppressing the pyrolysis of the second resin film 4 held between the first resin film 2 and the metal foil 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
