PROCEDIMENTO PER LA PRODUZIONE DI PELLICOLE DI MATERIA PLASTICA IN FOGLI

摘要

Blown film sheeting is manufactured using a tubular film blowhead fitted with internal and external air cooling devices, a collapsible frame for flattening the tubular film and a slitting device positioned above the frame for producing the film in sheet form just prior to removal of the film on dual takeoff rolls. The invention is particularly adaptable for thermoplastic polyethylene film.