On the basis of absorbing foreigh advanced technology.Plastic extruding flat film stretching line is used by micro-processor control frequency conversion and silicone controlled dc etc.The main parts use foreign quality products.The line on large l/d ratio and mixing smelt section on the extruder screw for which is specially parts using quality steel, for the filter changing system we apply advanced foreign automatic filter changing structure.The heating board is changed into advanced stretching hot air oven and principal technical index of the line reach international advanced level.The line has the performance of high speed.Top yield, low energy consumption., good forming quality of the fiber dru.The structure of the line is compact with a pleasing appearance smooth running, flexible and reliable control sophisticated Diameter of screw¡¨ºo65mm