RESIN COMPOSITION WITH IMPROVED INFLATION-FILM MOLDABILITY OR FILM

摘要

PROBLEM TO BE SOLVED: To provide resin compositions capable of stably producing inflation films even with increased blow-up ratios and enlarged lip gaps in molding inflation films. SOLUTION: Resin compositions comprise 98-70 wt.% polyolefin resin which meets the relationship between the melt flow rate(MFR) at 230 deg.C and the melt tension(MT) at 230 deg.C represented by formula I: MT<11.32+MFR-0.7854 and 2-30 wt.% high melt strength polypropylene resin which meets the relationship between the melt flow rate(MFR) at 230 deg.C and the melt tension(MT) at 230 deg.C represented by formula II: 11.32×MFR-0.7854<=MT.