... three extruder structures,suitable for PP,PS,EVOH,AHD and other material production, for example,PP/ADH/EVOH/ADH/PP structure,EVOH layer ... from oxygen,and make the package durable.B. The extruders are equipped with gear pump quantitative transmission, and the United ... technology, make layer more uniform, never fault after molding drive plug assist.D.Independent power system,and used straight conjunction ...