摘要 |
PROBLEM TO BE SOLVED: To provide a moisture-proof material for a heat insulating material made of a laminated film which is excellent in water vapor-barrier properties, fire retardancy, and flexibility and prevents each resin surface from adhering excessively when a laminated film is taken up in the shape of a roll. SOLUTION: In the laminated film, a water vapor-barrier layer and a softening material layer are laminated through an adhesive layer. The water vapor-barrier layer is made of a polyvinylidene chloride resin containing 97-93 wt.% of a vinylidene chloride component and 3-7 wt.% of a methyl acrylate component, and the softening material layer is made of a polyvinyl chloride resin. The moisture-proof material for the heat insulating material is constituted of the laminated film containing 10-30 pts.wt. of a plasticizer and 5-20 pts.wt. of a fire retarder per 100 pts.wt. of the polyvinyl chloride resin. COPYRIGHT: (C)2007,JPO&INPIT
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