The sheet production line which also called "Sheet extrusion line" has screw with special mixing and plasticization function:
? Coat hanger type die with two throttle design enable to regulate the sheet thickness accurately;
? ±1? temperature control make the plasticizing process and sheet thickness control more accurate;
? Horinzontal, vertical or 45°incline type three rollers calenders may be lifted freely;
? Sheet thickness shall be regulated by screw and pressing roller;
? Separate roller temperature control system to control the temperature of pressing roller to gain even sheet thickness;
? Exact slicing machine, board length and quantity;
? Winder with big torque motor, and its speed and tension force adjustable;
? Automatic metering to set the length of product
There is a photo of Sheet extrusion line.
Sheet Extrusion Line
Reference from: http://www.odemade.com/product/125--sheet-production-line---92fe/