Process for the manufacture of oriented polymers strips

摘要

A process for the manufacture of an oriented strip comprising a semi-crystalline polymer according to which a film comprising said polymer is drawn in a longitudinal direction on a length L between 2 points at which the film moves at a respective linear velocity of v 1 and v 2 during its drawing, characterized in that v 1 , v 2 and L answer the following criteria: (v 2 - v 1 )/L > 0.22 s -1 .