The relationship among the number of skein,twin screw extruder rotating speed,adding amount of
plastic and fiber content was studied in the process of production of fiber reinforced thermoplastic by twin screw extruder.
Fiber content could controlled precisely in the range of ±0. 1wt% by adjusting the three parameters forward.
When the twin screw extruder rotating speed and adding amount of plastic,or the number of skein and adding amount
of plastic were increased simultaneously, the output of extrusion was improved at the same multiple and the fiber content
maintained invariably. These method were efficient,feasible,accurate and controllable,and could be comprehended
easily by operator to direct practice.