Process for processing an undried particulate polymer or polymer mixture by means of a single or multi-screw extruder

摘要

Process for processing an undried, particulate polymer or polymer mixture by means of a single- or multi-shaft extruder comprising a working cylinder with one or more worm shafts received therein, a feed section for the polymer provided on the working cylinder and a melting section provided on the working cylinder, in which the polymer or Melted polymer mixture, wherein the undried over the feed section into the cylinder introduced polymer or polymer mixture is degassed in at least one of the working cylinder downstream of the feed and the melting section upstream vacuum degassing.