Twin screw extruders for powder coating is developed on the basis of single screw extruder. Due to its good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability, etc., it has been widely used in extrusion Molding and processing of products.

working principle:
From the point of view of the movement principle, in twin screw extruders for powder coating, the co-direction meshing and the non-direction meshing and non-meshing type are different.
1. Twin screw extruders for powder coating
This type of extruder has low speed and high speed. The former is mainly used for profile extrusion, while the latter is used for special polymer processing operations.
(1) Closely meshing extruder. The low-speed extruder has a tightly meshing screw geometry, in which the spiral edge shape of one screw closely matches the spiral edge shape of the other screw, that is, the conjugate screw shape.
(2) Self-cleaning extruder. The high-speed co-rotating extruder has a closely matched spiral shape. This kind of screw can be designed to have a relatively small screw gap, so that the screw has a closed self-cleaning effect. This kind of twin screw extruders for powder coating is called a compact self-cleaning co-rotating twin screw extruders for powder coating.
2. Twin screw extruders for powder coating
The gap between the two screw grooves of the tightly meshing counter-rotating twin screw extruders for powder coating is very small (much smaller than the gap in the co-rotating twin screw extruders for powder coating), so it can achieve positive conveying characteristics .
3. Non-meshing twin screw extruders for powder coating
The center distance between the two screws of the non-meshing twin screw extruders for powder coating is greater than the sum of the radii of the two screws.