| 摘要 |
PURPOSE:A polypropylene film suitable for shrinkable labels, having a specific thermal shrinkage ratio and a specific birefringence of inner face of film, shrink able greatly in one direction, having balanced physical properties, comprising a propylene resin. CONSTITUTION:A film comprising polypropylene resin consisting of (A) 95-40wt% polypropylene polymer and (B) 5-60wt% petroleum resin and/or terpene resin, having 7-15cal/g crystallization amount of heat is biaxially oriented, to give a film having >=40% heat shrinkage ratio in one direction and <=15% heat shrinkage ratio in a direction rectangular to it when immersed in 100 deg.C hot water for 5min and <=0.01 birefringence in a film face. |
