Polyolefin series resin film, composition for preparing the same and process and apparatus for preparing the film and the composition

摘要

The polyolefin ÄAÜ has a weight average molecular chain length of 2850nm or longer and a density rho 1 (g/cm<3>), the polyolefin wax ÄBÜ has a weight average molecular weight of 700-6000 and a density p2 (g/cm<3>), the polyolefin and the polyolefin wax are incorporated at ÄAÜ/ÄBÜ=90/10-50/50 (ratio by weight), and the densities rho 1 and p2 satisfy the following conditions: 0.92≤rho 1≤0.94, 0.91≤rho 2≤0.93, -0.03≤( rho 1- rho 2)≤0.03.