Patents by Inventor Heinrich Heitz

Heinrich Heitz 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).

  • Patent number: 5059270
    Abstract: In a process for the welding of plastic films lying flat, one on top of the other, the plastic films are brought into contact with a heated cutting edge and hot-tool welded. Two-layered or multilayered composite films of different chemical composition are used for the welding; for example, one composite film can be an opaque, colored or uncolored layer, on which there is arranged a transparent sealing layer comprised of a propylene-ethylene copolymer or a propylene-ethylene blend. The sealing layer of the opaque composite film is welded directly to a sealing layer of a second, transparent composite film.
    Type: Grant
    Filed: March 16, 1989
    Date of Patent: October 22, 1991
    Assignee: Alkor GmbH Kunststoffe
    Inventors: Edgar Fleischmann, Maximillian Mayr, Heinrich Heitz
  • Patent number: 4892605
    Abstract: A multi-layer laminate web for furniture formed of a polyolefin web containing a mixture or blend of specific proportions by weight of a propylene homopolymer or copolymer and specific proportions by weight of a low pressure polyethylene, polyvinylalcohol, ethylene-vinylalcohol copolymer, ethylene-acrylic acid copolymer, ethylene-acrylate ester-acrylic acid copolymer or -terpolymer and/or polycaprolactone or a mixture of blend of low pressure polyethylene with one or more of the foregoing polymers, copolymers or terpolymers and specific proportions by weight of a finely divided mineral filler or mineral filler mixture having on the surface thereof a substance having polar and non-polar groups, and a surface layer having an average thickness from 3 to 30 microns applied over the polyolefin web. A method for producing a furniture laminate is also disclosed.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: January 9, 1990
    Assignee: Alkor GmbH Kunststoffe
    Inventors: Manfred Schneider, Heinrich Heitz, Dieter Schlenz, Egon Ewald
  • Patent number: 4767667
    Abstract: A multi-layer laminate web for furniture formed of a polyolefin web containing a mixture or blend of specific proportions by weight of a propylene homopolymer or copolymer and specific proportions by weight of a low pressure polyethylene, polyvinylalcohol, ethylene-vinylalcohol copolymer, ethylene-acrylic acid copolymer, ethylene-acrylate ester-acrylic acid copolymer or -terpolymer and/or polycaprolactone or a mixture or blend of low pressure polyethylene with one or more of the foregoing polymers, copolymers or terpolymers and specific proportions by weight of a finely divided mineral filler or mineral filler mixture having on the surface thereof a substance having polar and non-polar groups, and a surface layer having an average thickness from 3 to 30 microns applied over the polyolefin web. A method for producing a furniture laminate is also disclosed.
    Type: Grant
    Filed: August 22, 1986
    Date of Patent: August 30, 1988
    Assignee: Alkor GmbH Kunststoffe
    Inventors: Manfred Schneider, Heinrich Heitz, Dieter Schlenz, Egon Ewald
  • Patent number: 4751141
    Abstract: A polypropylene foil with a content of fine particles of cellulose acquires substantially improved adhesion properties through surface activation, for example, radiation.
    Type: Grant
    Filed: February 24, 1983
    Date of Patent: June 14, 1988
    Assignee: Alkor GmbH Kunststoffverkauf
    Inventors: Roland Fink, Heinrich Heitz