pof shrink film is made up of PP and PE material . 1.thinkness is 12~30mic; 2.shrinkage rate up to 70%; 3.Density:0.925g/cm3 POF shrink wrap film,POF film,polyolefin filmMain equipment structures:It is composed of two screw plastic extruders, unique designed 5-layer coextrusiondie head, mandril type internal cooling molding devices, cooling vane, coolingwater ring, traction devices, ultrasonic ...