Patents Assigned to Sterling Extruder Corporation
  • Extruder screw
    Patent number: 4733970
    Abstract: Extruder screw having a feed section, compression section and metering section. The compression section includes two transition portions with a barrier flighted portion disposed therebetween. The screw reduces the power consumption and stock temperature of thermoplastic material.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: March 29, 1988
    Assignee: Sterling Extruder Corporation
    Inventor: Lucien D. Yokana
  • Apparatus for cooling rubber and plastic extrudates
    Patent number: 4185396
    Abstract: Rubber and plastic extrudates are passed through a fluidized bed wherein they are simultaneously cooled and supported by gas-cooled, fluidized particles. In a preferred arrangement, the fluidized bed is provided with gas, cooled to a plurality of different temperatures, in order to provide a controlled cooling rate. By this technique, extrudates can be cooled as fast as they can be extruded with minimal thermal degradation, distortion, and marring.
    Type: Grant
    Filed: February 1, 1978
    Date of Patent: January 29, 1980
    Assignee: Sterling Extruder Corporation
    Inventor: Alan S. Haisser