Patents Assigned to QPF, Inc. (Delaware Corporation)
  • Polyester-containing biaxially-oriented polypropylene films and method of making the same
    Patent number: 5637366
    Abstract: Polyester-containing multilayer biaxially-oriented polypropylene films are provided. According to the invention, a two- or three-layer polyester-containing cap layer is bonded to a monoaxially oriented polypropylene core, followed by orientation of the resulting composite in a direction transverse to the direction of orientation of the core layer. At least one tie layer is interposed between the core and the polyester. Advantageously, the polyester contains silicone fluid as a processing aid.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 10, 1997
    Assignee: QPF, Inc. (Delaware Corporation)
    Inventors: Alan M. Davis, John Lawrence, Deepak Mehta