Conventional Single screw extruder is not ideal for WPC forming operation, for that reason that it processes the weak ability for substance transmission and plasticization. The transmission affection of single screw extruder largely is dependent near to the area of friction. The wooden framework is as well fluffy to feed, at the same time to the filling of wooden framework make the polymer melt viscosity enhance which tends to make extruding much more difficult? to make certain how the substance features a extended residence time through the cylinder ,and at a comparable time it cannot run toward plant soluble fiber with huge consuming water percentage for its bad exhausting affection. Therefore, conventional single screw extruder will most probable be significantly limited through the extruding treatment of wood-plastic composite materials.
The single screw extruder, which could be utilized toward WPC forming operation, must take advantage of the specifically produced screw. This sort of screw must has powerful ability for substance transmission and mixing substance plasticization, also it could often combination and pelletize components earlier to extruding.
Nowadays the principal operation of WPC is twin screw extruder, for that reason that it delivers components relying near to the theory of optimistic displacement and owning no stress returning ,easy feeding ,good exhausting affection. therefore the volatile components in wooden flour could be completely ruled out. The meshing of screws with each and every other at the same time to the powerful shearing will make the substance have much better mixing and plasticization affection. The wooden flour cannot be charred for that reason how the much less amount of wooden flour is, the shorter time the substance will stay in twin screw extruder.
Thus, the flour could be utilized in WPC merchandise for that twin screw extruder owning an superb substance adding and mixing affection. Twin screw extruders