| 摘要 |
PROBLEM TO BE SOLVED: To prepare a film having metallic gloss excellent in decorativeness without being detected by certain kinds of metal detectors by forming a vapor depositing layer with a specified thickness essentially consisting of Al and oxygen on a substrate film and specifying the surface electric resistance and light reflectance on the side of the vapor depositing layer. SOLUTION: At least one side of a substrate film is provided with a vapor depositing layer (VAO) with 300 to 3000Åthickness essentially consisting of Al and oxygen. The electric resistance of the surface of the vapor depositing layer is regulated to 3.0Ω/square, and the light reflectance at 400mμwavelength on the side of the vapor depositing layer is regulated to >=80%. The film stock is composed of one or more kinds among polyester contg. >=85wt.% unit of polyethylene terephthalate, polyolefine and polyamide. The ratio of the total of Al to oxygen occupied in the vapor depositing layer is preferably regulated to >=90%. Al and oxygen are properly coexistent and are integrated and arranged as one layer to form the vapor depositing layer. The vapor depositing layer may contain the nitride of Al, the oxide of silicon and the nitride of silicon.
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