POLYAMIDE FILM AND MANUFACTURING METHOD THEREOF

摘要

The method is for manufacturing polyamide that has not twist phenomenon by having a same contractile ratio at length and breadth direction. The method comprises: (A) extruding and cooling polyamide 6 resin as sheet; (B) drawn to length and breadth direction and treated by heating with TD relex at tenter oven; (C) closely sticking both the edges of polyamide 6 film to heat roll and treated by heating with D.M relex as controlling velocity of front/rear roll.