Double-layer co-extrusion film blowing machine features: 

1, two-layer co-extruded composite film can prolong the preservation of liquid package. 2, the extruder barrel, screw are made of high quality alloy steel by precision machining and nitrogen treatment, the hardness to achieve the best value and durability. 3, the auxiliary machine has a platform working table for making operation easy and is equipped with bubble stabilizing ring. 4, coiling device: double-rolling and double-cutaway adopts torque motor to keep proper tension winding neatly, roll-changing easy.