| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polyethylene-based porous film having excellent waterproof moisture permeability, high weather resistance and light resistance, and a laminated sheet made by laminating the porous film to an air-permeable reinforcing material. SOLUTION: The porous film is obtained by stretching a resin composition comprising 100 parts wt. of a polyethylene-based resin, 50-200 parts wt. of an inorganic filler, 0.5-20 parts wt. of titanium oxide and 0.2-5 parts wt. of a hindered amine-based photo-stabilizer which has 1,500-4,500 molecular weight and in which a piperidine ring is a tertiary amine in at least a uniaxial direction and making the film porous. The laminated sheet is obtained by laminating the air-permeable reinforcing material to at least one side of the porous film. COPYRIGHT: (C)2004,JPO
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