Film of good tear property on impact

摘要: A film of excellent cutting property in the transverse direction which comprises a mixture polypropylene and at least one ethylene polymer satisfying following requirements: 1. Ny - Nx = 6 × 10 -3 ˜ 25 : Wherein refractive index machine is direction; 2. (Nx + Ny) 0.5 Nz ≦ 0.012: vertical are each as defined above; 3. break elongation 150 800%; 4. no substantial necking seen on surface thereof.