... molding machine ranging from 1000L,2000L,3000L,to 5000L.These machines can produce civil barrel ,220L double L-ring barrel,plastic ... design of screw is more scientific , it can ensure the plasticizing uniform and efficient;(3).Extruder adopts variable-frequency and variable-speed motor ... die head and the accurate material distribution in the die head make it easier to change the color or material;(8 ...