Patents Assigned to P.C.E. Corp.
  • Dual barrier laminate process
    Patent number: 5066443
    Abstract: The present invention provides a novel process for the coextrusion of a laminate containing more than a single barrier layer. The process overcomes the interfacial instability associated with thinning and spreading a composite stream containing a barrier layer of EVOH. Furthermore, the process prevents migration of EVOH particles from regrind.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: November 19, 1991
    Assignee: P.C.E. Corp.
    Inventor: Peter F. Cloeren
  • Layer width control
    Patent number: 4839131
    Abstract: The present invention provides a novel coextrusion apparatus that includes a first flow channel of a greater width than a second flow channel, and an adjustable vane blade between the channels. By the use of interchangeable plates, this unique apparatus is able to prevent any selected layer or layers of a laminate from extending to the full laminate width. This highly advantageous result is obtained by the formation of an isolating edge that is an integral part of a layer or layers that extend the full laminate width. Also provided is process for forming a laminate having an isolating edge.
    Type: Grant
    Filed: September 3, 1987
    Date of Patent: June 13, 1989
    Assignee: P.C.E. Corp.
    Inventor: Peter F. Cloeren
  • Coextrusion apparatus and process
    Patent number: 4789513
    Abstract: The present invention provides a novel coextrusion apparatus including, in a preferred embodiment, a die within a feedblock. The apparatus includes edge seam-forming channels, which provide a core layer sandwiched within adjacent layers having integrally seamed edges. Also provided in a unique process for sandwiching a core stream within adjacent layers.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: December 6, 1988
    Assignee: P.C.E. Corp.
    Inventor: Peter F. Cloeren
  • Edge-laminating apparatus and process
    Patent number: 4784815
    Abstract: The present invention provides a novel edge-laminating apparatus, in which an edge-laminating stream exiting from an edge-laminating flow channel, is driven by flow pressure into an edge of another stream. Also provided is a novel process for forming an edge-laminated stream, and for forming an extruded product.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: November 15, 1988
    Assignee: P.C.E. Corp.
    Inventors: Peter F. Cloeren, Charles H. Wernery, Jr.
  • Coextruded laminate having barrier layers
    Patent number: 4780258
    Abstract: The present invention provides a novel process for the coextrusion of a laminate containing more than a single barrier layer. Also provided is a coextruded composite useful for forming containers. Additionally, there is provided a unique coextrusion apparatus useful for forming the laminate.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: October 25, 1988
    Assignee: P.C.E. Corp.
    Inventor: Peter F. Cloeren