... production machine machinemulti-layer film blowing machine SGJ500-1500 POF 3-Layer Co-extrusion Polyolefin Hot-shirnk Production LineUse:Thermal shrinkage ... bulk of audio-video tape, toy, disc, magazine, drinking cup, glass, frozen food and etc., And packing of Irregular shaped products, such ... in and rolling up of film is even and smooth.3. (Ø50-300)change of die head,applying to blow film ...