| 摘要 |
PROBLEM TO BE SOLVED: To provide a shrink film excellent in transparency, blocking resistance and orientation processability. SOLUTION: This shrink film is made from (A) 100 pts.wt. of a propylene- ethylene-α-olefin random copolymer and (B) 0.01-1 pt.wt. of an antioxidant, and preferably furthermore contains (C) 0.01-1 pt.wt. of an antiblocking agent and (D) 0.001-0.5 pt.wt. of a neutralizing agent; wherein the copolymer A is composed of 63-98.9 wt.% of propylene unit, 0.1-7 wt.% of ethylene unit and 1-30 wt.% of α-olefin unit, being 120-145 deg.C in melting point (Tm) and 2.5-7 wt.% in resin fraction eluted at <=40 deg.C, 84-97.5 wt.% in resin fraction eluted at >40 deg.C but >=100 deg.C and 0-9 wt.% in resin fraction eluted at >100 deg.C but <=130 deg.C, each determined by the temperature-ascending elution fractionation method using o-dichlorobenzene as the solvent. |
