Patents by Inventor Gert J. Huizinga

Gert J. Huizinga 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).

  • Method of forming lines of weakness in or grooving a plastic material, especially a packaging material
    Patent number: 5010231
    Abstract: A method of forming lines of weakness in or grooving a plastic material, especially a packaging material, by local vaporization or degradation by means of a laser beam, which laser beam and which plastic or packaging material can be moved in relation to each other, wherein the laser beam is generated by means of a wavelength tunable laser tuned to a wavelength selected on the basis of the wavelength depending absorption spectrum of the material to be processed.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: April 23, 1991
    Assignee: LPF Verpakkingen B.V.
    Inventor: Gert J. Huizinga
  • Method of providing score lines in packaging material
    Patent number: 5001325
    Abstract: A method of providing score lines in packaging material by local evaporation using a laser beam, wherein the laser beam and the packaging material are movable relative to each other. The score lines are provided in a recurring pattern on at least one side of a web of packaging material as it advances at a uniform, adjustable speed. The intensity of the laser beam is adjustable, and the laser beam is moved in two mutually perpendicular directions under the control of pattern-dependent signals.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: March 19, 1991
    Assignee: LPF Verpakkingen B.V.
    Inventor: Gert J. Huizinga