... layer Co-extrusion Rotary Die Film Blowing Machine,three layer rotary die film blowing machine.film blowing Name:3SJ-G Series Three layer Co-extrusion Rotary Die Film Blowing ... blown cotinuous800/150m in the thickness ackaging films, film has goog insulation,for instance holding temperature,antihumid,antivreeze,antivreeze,anti-raim,anti ...