... used to produce double-layer co-extrusion film in structure A + B/A + A FEATURES: This Co-extrusion blown film machine has ... rotary die included for this Co extrusion Film MachineDouble Winder included Mainly used to produce 2 ... -rain, anti-rost, anti-oxygen, oil resistance. The 2-layer co-extruded film widely used in drink packaging, milk packaging, etc ...