ORIENTED POLYOLEFIN SHEET AND METHOD FOR PRODUCTION THEREOF

摘要

A method for producing a polyolefin stretched sheet which comprises extrudin g a polyolfin having a weight average molecular weight of 100,000 to 500,000 into a primary sheet, rolling the primary sheet at a rolling magnification o f 5 or more, and stretching the rolled sheet into a polyolefin sheet which is totally stretched at a stretching magnification of 15 or more. The method ca n be employed for producing a polyolefin stretched sheet excellent in creep resistance, tensile strength and modulus in tension, with no use of a ultra- high molecular weight polyethylene and with excellent productivity.