oil or another heat transfer medium similarly to the annular channel 2 for example a heating element holder 15 which preferably has the poorest possible heat conduction is fastened via a screw connection 16 to the nozzle receptacle body 13 to fasten and insulate the heating element 14 using the heating element 14 the temperature of the area around the nozzles 5 and around the nozzle channels 12 may be set in a broad temperature range the heating element 14 preferably operates independently of the type and or the degree of the heating of the melt in the nozzle prechamber 1 the temperature of the nozzles 5 is selected in such a way that they do not cool too strongly under the influence of the cold atmosphere in the cooling pipe 11 and clogging of the nozzle outlet openings 6 by solidifying melt is prevented the viewing section 9 which is provided in this case with an all around viewing window 10 made of plexiglas for example and which allows unrestricted observation of the droplet formation process from all sides is provided below the heating element 14 fig3 shows a further design of the present invention in which the heating of the nozzles 5 is.