Uses: It is suitable for blowing the plastic film as high density polyethylene(HDPE), low densitypolyethylene(LDPE)and linear low density polyethylene (LLDPE), which is widely used to packing foodstuff,garment,textile,daily-use articles and industrial products etc . Characteristics: l.The screw stem and cylinder are made of 38CRMOALA high quality alloy steel after fine finishing, which has high hardness, strong resistance to corrosion,durable servivce. 2. The coiling unit adopts pressure friction rewinding,which is driven by torque motor,with even and smooth rewinding 。