Device for producing plastic films during cast film extrusion process, has extrusion device and one or multiple air intake ports, where supply nozzle is arranged on cooling roller in rotational direction of cooling roller

摘要

The device (2) comprises an extrusion device (4) and one or multiple air intake ports (10,12). A supply nozzle (20) is arranged on a cooling roller (8) in a rotational direction (R) of the cooling roller behind a support point (14) of a plastic film (16). A supply air flow (Z) is blow-molded on the surface of the cooling roller in an axial or tangential direction.