| 摘要 |
PROBLEM TO BE SOLVED: To provide a low heat shrinkage factor and easily tearable biaxial orientation polypropylene film having suitability for a dispenser. SOLUTION: An easily tearable biaxial orientation polypropylene film comprises homopolypropylene, as a principal component, having a meso pentad of 90-98% and a melt flow index of 4-25 g/10 min, the film having a refractive index of 1.512-1.530 in a longer direction. Alternatively, the film comprises copolymerization polypropylene, as the principal component, obtained by copolymerizing polypropylene having the meso pentad of 85-98% and the melt flow index of 4-25 g/10 min and not more than 2 wt.% of ethylene and/or butene, the film having the refractive index of 1.50-1.52 in the longer direction. |
