METHOD FOR GRANULATING POLYMER MELTS THAT CONTAIN LOW BOILING FRACTIONS

摘要

The invention relates to a method for granulating polymer melts in a granulation chamber in which a cutting device is accommodated at a pressure above ambient pressure. In a first step, the granulating chamber is flooded with a gas which is inert in relation to the polymer melt and has a pressure at which granulation is carried out. The polymer melt is then injected into the granulating chamber. The gas is finally expelled from the granulating chamber by a liquid once the polymer melt starts to flow through the cutting device, the melt being cut into pellets.