... plastic film as HDPE,LDPEand LLDPE film blowing machine is suitable for blowing the plastic film as HDPE, LDPE and LLDPE,which is ... , which has high hardness, strong resistance to corrosion, durable service.2. The die head is plated with hard chrome, of screw ... even and smooth main technical parameters of screw for film blowing machineTypeItemDiameter of screw(mm)L/D ratio of screwRotational speed ...