| 摘要 |
PROBLEM TO BE SOLVED: To provide a propylene polymer composition suitable for obtaining a film that has good rigidity, low temperature impact resistance, anti-blocking properties and heat-sealing strength, shows small reduction of the heat-sealing strength even after a heat-treatment, and is suitable for packaging a boil-in-the- bag food. SOLUTION: The composition comprises a propylene polymer component (A), a propylene/α-olefin random copolymer component (B) and an ethylene/α- olefin random copolymer component (C), and has an MFR (230 deg.C) of from 0.01 to below 2 (g/10 min), wherein (A)/(B) is 85/15-97/3 (weight ratio); (B) has an intrinsic viscosity [η] of 2.5-4.5 (dl/g) and a propylene content of 65-80 wt.%; and (C) has a density of 0.865-0.910 (g/cm<3> ) and a percentage in the composition of 5-25 wt.%. |
