Plastic extruder developed countries has been widely used modern electronic and computer control technology, the whole process of extrusion process parameters such as melt pressure and temperature, the temperature of each section of the fuselage, the main feed screw and screw speed, feed quantity, the ratio of various raw materials, motor current and voltage parameters such as online testing, and the use of computer closed-loop control. This is to ensure a stable process conditions, improve the accuracy of the product are extremely favorable.