... production machineFood packaging film making machine SGJ500-1500 POF 3-Layer Co-extrusion Polyolefin Hot-shirnk Production LineUse:Thermal ... protective film, thermal shrinkageFilm and annealed soft film, single layer, thermal shrinkage film and etc).Feature:POF Film blowing ... film making machine1. Composed by three squeezing machines, joint squeezing rotatory die head, system of wind cooling and ...