... from LLDPE) plastic film, coextruded by three extruders, shaped in a die, processed thro two steps of blowing inflation.POF film ... Layer Co-extrusion POF Heat-Shrinkable Film Blowing Machine is a line to process heat-shrinkable film in two blowing steps, developed ... tension auto controlled, swiveling hauled-off down. This machine is a perfect equipment to make POF heat-shrinkable film of construction ...