Patents Assigned to Rumber Materials, Inc.
  • Process and apparatus for cooling an extrudate
    Patent number: 5861117
    Abstract: A process for extruding a mixture of thermoplastic and ground whole tire waste, in which the mixture is extruded through a die to form an extrudate, with the extrudate subsequently cooled by directing a cooling gas toward the extrudate top, bottom and sides from a multiplicity of gas jets positioned around the periphery of the extrudate. In addition to an extruder, the apparatus includes a multiplicity of gas jets adjacent the extruder, positioned to direct a cooling gas toward the extrudate top, bottom and sides.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: January 19, 1999
    Assignee: Rumber Materials, Inc.
    Inventor: James E. Rosenbaum