| 摘要 |
A film of a homopolymer of propylene, said film being non-oriented or monoaxially oriented and having a density of at least 0.904 g/cm<3> and orientation factors cos<2> X, cos<2> Y and cos<2> Z in the thickness, transverse and machine directions, respectively, of the film of from 0.20 to 0.5, said orientation factors satisfying the following relationship: <IMAGE> The film of the invention is tearable and heat-sealable and is particularly suitable for use in providing food packaging bags. |
