Patents Assigned to QPF, L.L.C.
  • Polyester-containing biaxially-oriented polypropylene films
    Publication number: 20020009605
    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: Application
    Filed: March 7, 2001
    Publication date: January 24, 2002
    Applicant: QPF, L.L.C.
    Inventors: Alan M. Davis, John H. Lawrence, Tung-Yao Weng
  • Polyester-containing biaxially-oriented polypropylene films and method of making the same
    Patent number: 6221191
    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: February 7, 1997
    Date of Patent: April 24, 2001
    Assignee: QPF, L.L.C.
    Inventors: Alan M. Davis, John H. Lawrence, Tung-Yao Weng