It is used for blowing the various PE thermal shrinking membranes which are applied extensively to food, medicine,beer bottle, material bottle,box,case,cloth reel, floor, glass,all sizes of trays,pottery,tissue,etc. Characteristics: The barrel and the screw stems of the above extruder are made of high quality alloy steel with optimum hardness and strong corrosion resistance after precision finishing and nitrogen treatment. The auxiliary machine has a platform working table for making operation easy.The coiling unit adopts torque motor to keep proper tension and make flat winder and roll-changing easy.