Method and apparatus for manufacture of a polymer film, which is oriented under an angle to its longitudinal direction

Flexible pipe the thin film such as the helical cutting the flat strip is through: Is composed of overturn uncoiler of the pipe the thin film opening rolling into flat form; So as to make the thin film tube at the front pipe expansion area of the pipe the pipe expansion area is expanded to be cylindrical pipe and axial direction through the hollow centre shaft is the hollow centre shaft the outer diameter of the slightly smaller than the expansion pipe the diameter of the so that when on the mandrel through the knife when the spiral cutting the flat strip the flat strip the center shaft line a certain angle can removes. Horizontal pipe through stretch roll 107-112 by longitudinal stretching the tension roller the over-turning open machine with turnover. The device further comprises a stabilizing device is used in the film strip from the central shaft open stable after it is composed of overturn stretch roll is exerted on the helical cutting the film strip is set on the directional.