Patents Assigned to Kabushiki Kaisha Plastic Kogsku Kenkyusho
  • Screw extruder
    Patent number: 3957256
    Abstract: A screw extruder having a screw including a plug formed with flutes by which the flow of material existing in the cross section of a screw channel is divided into a plurality of striations. The order of arrangement of inlets of the flutes is different from the order of arrangement of outlets communicating with the inlets with respect to the circumferential direction of the plug, whereby the flow is divided into rearranged striations.
    Type: Grant
    Filed: March 26, 1974
    Date of Patent: May 18, 1976
    Assignee: Kabushiki Kaisha Plastic Kogsku Kenkyusho
    Inventor: Kenkichi Murakami