AIR COOLING INFLATION-MOLDED MULTILAYERED FILM

摘要

PROBLEM TO BE SOLVED: To provide an air cooling inflation-molded multilayered film having high transparency equal to that due to a T-die method or a water cooling inflation method by an air cooling inflation method and also having excellent tear strength and impact strength. SOLUTION: The air cooling inflation-molded multilayered film is based on a propylene-α-olefin random copolymer with an MFR(230°C) of 1-20 g/10 min, a melt peak temperature(Tm) of 110-135°C and Mw/Mn of 1.5-3.5 polymerized using a metallocene catalyst. A propylene resin layer is laminated on one side or both sides of an ethylenic resin layer comprising an ethylene/3-12Cα-olefin copolymer with an MFR(190°C) of 0.1-20 g/10 min and a density of 0.860-0.925 g/cm3. COPYRIGHT: (C)2005,JPO&NCIPI