Patents by Inventor Reinhard Leigraf

Reinhard Leigraf 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).

  • Publication number: 20100006251
    Abstract: An arrangement for the production of a wood-free coated, matte or semi-matte paper web including at least one precalendering apparatus for precalendering the paper web, at least one coating apparatus and at least one dryer. The coating apparatus is configured to apply a liquid and/or a pasty application medium to the paper web. The dryer is configured for drying the paper web.
    Type: Application
    Filed: September 17, 2009
    Publication date: January 14, 2010
    Inventors: Reinhard Leigraf, Susanne Berger, Bernd Gueldenberg
  • Publication number: 20070166462
    Abstract: A method for the production of a wood-free coated, matt or semi-matt paper web, including the steps of precalendering, coating and drying. The precalendering step includes precalendering the paper web using at least one apparatus for precalendering. The coating step includes coating at least one side of the paper web by using at least one apparatus for applying one of a liquid and pasty application medium. The drying step includes drying the paper web using at least one apparatus for drying the paper web. The method creates the wood-free coated paper web with a roughness level in the range from 0.8 to 3.9 ?m PPS (Parker Print Surf) and a gloss value in the range from 3 to 35% TAPPI 75° (Specular Gloss of Paper and Paperboard at 75°).
    Type: Application
    Filed: December 21, 2004
    Publication date: July 19, 2007
    Inventors: Reinhard Leigraf, Susanne Berger, Bernd Gueldenberg
  • Patent number: 5685955
    Abstract: A method and apparatus for processing a longitudinally traveling web of material using a sheet treating device positioned in a transverse direction relative to the web. The sheet treating device having a plurality of individually controllable zones for controlling a target parameter of the web, for example, the thickness, bulk, dampness, smoothness or sheen of the web. In conjunction with the sheetmaking device, a measuring instrument for measuring an actual value of the target parameter is placed downstream of the sheet treating device. An actual profile that is determined by the actual values is compared with a desired profile, and the zones of the sheet treating device are adjusted such that the discrepancies between the two profiles are minimized. To improve the matching of the actual profile to the desired profile even further, the web and/or the sheet treating device are shifted relative to the other in the transverse direction to minimize the discrepancies between the two profiles.
    Type: Grant
    Filed: November 28, 1995
    Date of Patent: November 11, 1997
    Assignee: Voith Sulzer Finishing GmbH
    Inventors: Reinhard Leigraf, Hans-Rolf Conrad