POLYPROPYLENE-BASED RESIN FILM IMPROVED IN IMAGE CLARITY

摘要

PROBLEM TO BE SOLVED: To provide a polypropylene-based resin film excellent in transparency and improved in image clarity. SOLUTION: This polypropylene-based resin film improved in image clarity is characterized in that the film is composed of a propylene-α-olefin random copolymer resin composition comprising (A) 100 pts.wt. propylene-α-olefin random copolymer polymerized by a metallocene catalyst and having the following characteristics (A1) to (A5), (B) 0.001-5 pts.wt. polyethylene having the following characteristics (B1) to (B2) and (C) 0.001-0.5 pt.wt. nucleating agent, and image clarity of the film is >=80% and haze of the film is <=3.5%. The characteristics (A1): MFR is 0.5-50 g/10 min; the characteristic (A2): Tp is 110-150 deg.C; the characteristic (A3): T80 to T20 is <=10 deg.C; the characteristic (A4): α-olefin content is 2-23 mol%; the characteristic (A5): satisfying the relationship represented by the formula Q>=0.11×[E]+2.0; the characteristic (B1): the density is 0.94 to 0.98 g/cm<3> ; the characteristic (B2): MI is >=10 g/10 min.