PROPYLENE BASED POLYMER COMPOSITION FOR EXTRUSION MOLDING

摘要

PROBLEM TO BE SOLVED: To obtain a propylene based polymer composition for extrusion molding capable of extrusion molding while inhibiting the occurrence of surface failure such as warpage during the molding to give a predetermined size of a corrugated board-like hollow sheet with a broad width and comparatively bulky thickness. SOLUTION: This propylene based polymer composition for extrusion molding has a storage elastic modulus (G') of 60 Pa or less at a circular frequency (ω) of 0.01 rad/s and a molecular weight distribution index (PDI-P) of 10-20 which is expressed byω2/10ω1whereinω1is a value when G'=2×102Pa andω2is value when G'=2×104Pa, and has MFR of 0.5-3.0 g/10 minutes, in the determination of melt viscoelasticity using a rheometer by a cone and plate method. COPYRIGHT: (C)2003,JPO