Polypropylene film and multilayered polypropylene film

摘要

The present invention relates to a film using a polypropylene composition comprising crystalline polypropylene and a copolymer of propylene with alpha-olefin in which a limiting viscosity of the said copolymer [eta]RC is not more than 6.5 dl/g; the ratio of the limiting viscosity of the said polymer [eta]RC to the limiting viscosity of the said crystalline polypropylene [eta]PP is from 0.6 to 1.2; and the product i.e. ([eta]RC/[eta]PP)x(WPP/WRC), of the ratio of the limiting viscosity of the copolymer to the crystalline polypropylene with the ratio by weight of them is within a range of from 0.2 to 4.5 and also relates to a multi-layered film having at least one layer of the said film.