... effect 3.Longer life 45mm extruder screw for HDPE blown film molding machine For good plasticizing effect, we have different design ... gradual type, mutant type, wave type, barrier type, double screen type, shunt type, separation type, exhaust type, pin type ... Screws Barrels for Injection, Extrusion, and Blow Molding applications; relevant accessories(such as die head, gearbox, filter screen changer and ...