| 摘要 |
PROBLEM TO BE SOLVED: To provide a polypropylenic resin composition excellent in balance between fluidity, melt strength and appearance, a film obtained with the composition and a method for producing the composition. SOLUTION: The composition comprises two or more propylenic polymer components having different molecular weights in which a component having a highest molecular weight has a specific intrinsic viscosity range, a component having a lowest molecular weight has the intrinsic viscosity of a specific multiple or more and the specific relations of a melt tension at 190 deg.C and a melt flow rate at 230 deg.C and of the number of fish eyes developed by forming a film and the melt tension at 190 deg.C are satisfied. The invention also relates to the film obtained with the composition and the method comprising the heating and melt-mixing of a propylenic polymer component with a multiple screw extruder. |
