Patents Assigned to Gossen Corporation
  • Integral composite profile of cellular and non-cellular resins and a dual extrusion method for its manufacture
    Patent number: 4690862
    Abstract: The dual extrusion and fusion of cellular and non-cellular resin extrudates produces an integral composite profile having a tongue and groove interlock. The resins are extruded through a common die having overlapping orifices. A bulbous tongue of one extrudate is encapsulated by finger-like projections of a second extrudate and the mated profiles are pulled through a vacuumized sizing box adapted to sealingly receive the cellular portion and to freely receive the non-cellular portion.
    Type: Grant
    Filed: December 28, 1984
    Date of Patent: September 1, 1987
    Assignee: Gossen Corporation
    Inventor: Daniel J. Hoffmann