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Features of twin screw extruder
by：TENGDA
2022-10-07
Co-meshing extruder. There are two types of twin-screw extruders here, high-speed and low-speed. The high-speed is mainly used for processing special polymers; the low-speed is mainly used for extrusion of profiles. High-speed co-rotating extruders have closely matched flight profiles. The screw can be designed to have a certain screw gap, so that the screw has a closed self-cleaning effect. This twin-screw extruder is also called a compact self-cleaning co-rotating twin-screw extruder; The geometry of the intermeshing screw, in which the profile of the flight of one screw matches the profile of the other screw very closely, which is the so-called conjugate screw profile.
Counter-intermeshing twin-screw extruder. The twin-screw extruder can carry out forward conveying, and the gap between its two screw grooves is much smaller than that of the same direction.
Non-intermeshing twin screw extruder. The center distance between its two screws should be greater than the sum of the two screw radii, only in this way can it work properly.
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