Patent ID: 9662818
Date: 2017-05-30
CPC Classifications: B29B,B29C

Claim:
1. A method of influencing a temperature of a melt in a plasticizing cylinder of a plasticizing unit for an injection molding machine having a plasticizing screw arranged rotatably and configured to be displaced linearly in a cylinder bore of the plasticizing cylinder which extends axially, wherein metering of plastic granular material fed to the plasticizing unit is effected in dependence on a desired temperature of the melt in the plasticizing unit, wherein an axial temperature profile of the melt is determined based on ultrasound measurements including reflected or transmitted ultrasound pulses at several axial positions of the plasticizing cylinder, wherein the metering of the plastic granular material is effected in dependence on the axial temperature profile of the melt, and wherein the plasticizing screw is underfed during the metering.