Solid state polycondensation process, e.g. for preparing polyesters for fiber production, involving supplying reactor with raw material granules obtained from threads or strands having structured cross-section

摘要

In a polycondensation process involving supplying granules (G) of = 2 mm to a polycondensation reactor (1) in which the raw material of (G) is supplied with energy and converted into a macromolecule by cleavage and elimination of low molecular components. In a polycondensation process involving supplying granules (G) of = 2 mm to a polycondensation reactor (1) in which the raw material of (G) is supplied with energy and converted into a macromolecule by cleavage and elimination of low molecular components. The condensed raw material is shaped into threads or strands of a structured cross-section to give an increased surface for the action of energy and the cooled threads or strands are cut (4) into (G) to be fed to the reactor.