| 摘要 |
PURPOSE:To obtain the title film which is unoriented and excellent in transparency, heat sealability, impact resistance and rigidity by using a specified random propylene/alpha-olefin copolymer unit as a base and mixing this base with a crystalline propylene polymer unit and an ethylene (co)polymer unit and extruding the mixture. CONSTITUTION:A composition is prepared by mixing 60-90wt.% random propylene/alpha-olefin (e.g. ethylene) copolymer unit of an m.p. of 130-150 deg.C with a crystalline propylene polymer unit and an ethylene homopolymer or an ethylene/alpha-olefin (e.g. propylene) copolymer unit, and this composition is extruded to obtain the title film of a haze <=20% and an impact strength >=15kg.cm/ mm at 0 deg.C. |
