Patents by Inventor Alan M. Davis

Alan M. Davis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Polyester-containing biaxially-oriented polypropylene films
    Patent number: 6607834
    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: March 7, 2001
    Date of Patent: August 19, 2003
    Assignee: Applied Extrusion Technologies, Inc.
    Inventors: Alan M. Davis, John H. Lawrence, Tung-Yao Weng
  • 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
  • Biaxially-oriented polypropylene films
    Patent number: 6033514
    Abstract: A biaxially-oriented polypropylene (BOPP) film with improved barrier properties, and a method of making the film are provided. The MVTR of a multi-layer BOPP film is improved by blending wax in the core layer resin, and providing a polyolefin cap layer on each side of the core layer. Significant additional improvements are seen when the film is heated at a temperature below the melting point of the core layer resin, below the distortion temperature of the film, and above the melting point of the wax for a time generally extending from at least five minutes to several hours or more in length, depending on the temperature.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: March 7, 2000
    Assignee: QPF, LLG
    Inventors: Alan M. Davis, Thomas M. Krigas
  • 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