A multi-shaft extruder with screw shafts capable of co-rotating at the same speed is provided, which is equipped with at least one degassing port. In the inlet area of the degassing port, the extruder is fitted with screw elements having an extra-large pitch, or screw elements with asymmetric profiles or eccentrically mounted on the rotating shafts. The invention also claims the application of the above extruder in processing or producing plastic materials, as well as the use of high-pitch screws, asymmetric profile screws or eccentrically installed screw elements in the degassing section of multi-shaft extruders.

Area Code: DE

Application Number: CN202080070873.3