DEVICE AND METHOD FOR CONTINUOUS CASTING AND GRANULATION OF STRANDS FROM THERMOPLASTIC

摘要

The invention relates to a device for continuous casting and granulation of strands from thermoplastic, comprising a nozzle head with a plurality of nozzle openings with a maximum diameter of 4 mm and a water-wetted control device for cooling and guiding the plastic strands after the nozzle opening via infeed rollers to the entrance of the cutting unit for milling the plastic strands into granulate of approx. 2 - 3 mm in length. The flow speed of the melt, under cooling of the strands from the nozzles via the control device to the infeed rollers of the cutting unit, of at least 100m/min in the spatially central region of the nozzle openings is raised so that the cutting unit cuts the strands at a cutting frequency of > 2000 cuts/s.