Device for pelletizing polymer melts comprising low-boiling substances

The procedure for granulating polymer melts (21) in a granulation chamber (20) to manufacture polyamide, comprises flooding the granulating chamber with a nitrogen/air in relation to the polymer melt, injecting the polymer melt into the granulating chamber and expelling the nitrogen/air from the granulating chamber by a liquid once the polymer melt starts to flow through the cutting device. After expelling the nitrogen/air, a further polymer melt is injected into the chamber. In the granulation chamber, a cutting device is accommodated at a pressure above the ambient pressure. The procedure for granulating polymer melts (21) in a granulation chamber (20) to manufacture polyamide, comprises flooding the granulating chamber with a nitrogen/air in relation to the polymer melt, injecting the polymer melt into the granulating chamber and expelling the nitrogen/air from the granulating chamber by a liquid once the polymer melt starts to flow through the cutting device. After expelling the nitrogen/air, a further polymer melt is injected into the chamber. In the granulation chamber, a cutting device is accommodated at a pressure above the ambient pressure. The nitrogen/air shows a pressure, with which the granulation is carried out. The polymer melt in the cutting device is cut into pellets. The granulated pellets with the liquid are discharged from the granulation chamber and subsequently separated from the liquid. The pressure in the granulation chamber is 2-15 bar. An independent claim is included for a device for granulating polymer melts in the granulation chamber.