... film blowing machine, pvc film extruder,film blowing machine PVC heat shrink film blowing machinepvc film blowing machine, pvc film extruder, ... .3 using new screw, 1;23 diameter, and suitable for high melt viscosity, heating stable.4 configuration, automatic temperature ... head wind central adopts special structure and it is good for plastination and cooling requirment.6 easy to operate: compact ...