1. HDPE, LDPE, LLDPE film blowing machine. 2. Double-head Feature: This machine is used for blowing Low-density polyethylene ( ... hardness, strong resistance to corrosion, durable service.3) The die head is plated with hard chrome, of screw mandrel type structure ... pressure friction rewinding or center rewinding, which is driven by torque motor, with even and smooth rewinding and easy roll changing ...