PROCESS FOR THE PREPARATION OF POLYETHYLENE FILMS WITH HIGH TENSILE RESISTANCE AND HIGH MODULE, POLYETHYLENE FILMS OBTAINED BY THIS PROCESS AND ARTICLES PREPARED THEREFROM

摘要

The object of the invention is to provide smooth and shiny polyethylene film having a high strength and modulus, and low freezing, opacity and porosity. A high temperature solution is provided at high temperature. 1 TO 40 BY WEIGHT OF A POLYETHYLENE HAVING A M 4 10 IN A VOLATILE SOLVENT INTO A FILM, THE FILM IS CONVERTED BY THERMOREVERSIBLE GELIFICATION INTO A GEL FILM AND SUBJECTED IT TO A HIGH TEMPERATURE AT ULTRA UNIAXIAL STRETCHING HIGH USING THIS PROCESS, IT IS POSSIBLE TO PREPARE FILMS HAVING MODULES GREATER THAN 50 GPA, OPACITIES LESS THAN 10 AND WATER VAPOR TRANSMISSIONS OF LESS THAN 0.5, PRACTICALLY WITHOUT FLOWING AND HAVING A SMOOTH AND BRILLIANT SURFACE. / P