| 摘要 |
PURPOSE:To obtain a multilayer film having surface characteristics showing no change in high vapor deposition strength, brightness and adhesiveness with the elapse of time and also having rigidity, strength and heat resistance, by forming said film from a resin composition layer I based on a polypropylene resin and an ethylene/butene-1 copolymer and a resin composition layer II based on a polypropylene resin and applying corona discharge treatment to the surface of the layer I. CONSTITUTION:A resin composition layer I is formed by compounding 0.005-0.5 pts.wt. of a hydrotalcite compound, 0.01-2.0 pts.wt. of an inorg. additive, 0-0.5 pts.wt. an org. additive and 0-0.02 pts.wt. of a metal salt of fatty acid with 100 pts.wt. of a resin component consisting of 70-99wt.% of a polypropylene resin and 1-30wt.% of an ethylene/butene-1 copolymer having density of 0.86-0.91g/cm<3> and a resin composition layer II is formed by compounding 100 pts.wt. of a polypropylene resin, 0.005-0.5 pts.wt. of a hydrotalcite compound, 0.01-2.0 pts.wt. of an inorg. additive, 0-0.5 pts.wt. of an org. additive and 0-0.02 pts. wt. of a metal salt of fatty acid and this film is constituted of these resin composition layers. The surface of the layer I is subjected to corona discharge treatment. |
