... consists of extruder, mold, first tractor (including vacuum sizing), water slide heater, tension machine unit, setting oven, rotating tractor, ... the working procedure of film belt is finished.triple bubble line-oriented shrink barrier film1)Suitable to process LDPE, ... 50kg/h Product layers3-7heating methodFar infrared ceramic Heater, water bathFlat width (mm)50-500Rotate methodWinding Thickness (um)25 ...