... rather durable 5 broad regulation range. Product DescriptionThe machine is suitable for producing PP. It is widely ... structure, melting material extruding evenly, and blowing film smoothing.cooling equipment is a labyrinth blow pump, ... motor to adjust, has the merits of smooth film, convenience operation.Optional parts: auto loaderrotary die ... 4.5 Polypropylene Rotary Die Head Film Blowing Machine