Three-layer Co-extrusion Internal Bubble Cooling Haul-off Rotary Film Product Line Three-layer Co-extrusion Internal Bubble Cooling Haul-off Rotary Film Product Line 1.Main usageApplicable for the materials as LDPE, HDPE, LLDPE, etc. It is widely used to manufactuer composite film basic material, liquid film, contractive film, protective film, cable film, macromolecule adhensive film, ...