| 摘要 |
PURPOSE:To obtain the excellent adhesiveness, transparency and good lubricity with a metal vapor deposition film or printing ink by laminating a polypropylene copolymer film having a specific thickness and specific wetting index to at least the single surface of a polypropylene film. CONSTITUTION:A composite film is formed by laminating a polypropylene copolymer film (B-layer) to at least the single surface of a polypropylene film (A-layer) and the thickness of the B-layer is 0.01-0.5mum and the surface wetting index thereof is 38 dyne/cm or more. A metal vapor deposition layer (C-layer) is provided to at least the single surface of the polypropylene copolymer layer (B-layer). The polypropylene copolymer resin used in the B-layer is a copolymer of propylene with 2-10 mol.%, pref., 3-6 mol.% of alpha-olefin such as ethylene, buttene-l or hexene-l. The surface gloss of the metal vapor deposition layer (C-layer) is 600 or more and the lowering of said gloss at the time of heating at 120 deg.C is 30% or less. |
