Patents by Inventor Sedat Varli

Sedat Varli 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 and apparatus for curtain coating
    Patent number: 7101592
    Abstract: In a method and an apparatus for curtain coating of a moved substrate like a paper web substrate is moved below a liquid supply means providing a single or multilayer liquid coating in the form of a free-falling curtain impinging the substrate at a dynamic wetting line and a blade or air shield located upstream of the dynamic wetting line with respect to the moving direction of the substrate. The dynamic wetting line of the coating curtain on the substrate or web is oriented generally perpendicular to the moving direction of the substrate or web, providing substantially the same air pressure over an essential part of the coating curtain on its front and back side with respect to the moving direction of the substrate and providing a first supply air flow upstream to the wetting line.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: September 5, 2006
    Assignee: Dow Global Technologies Inc.
    Inventors: Markus Gueggi, Sedat Varli
  • Method and apparatus for curtain coating
    Patent number: 6982003
    Abstract: An apparatus for curtain coating, particularly for high-speed curtain coating of a continuous paper web substrate (12) is provided with a hopper means (14) providing one or more liquid coating materials in the form of a free-falling curtain (16) impinging the substrate (12) at a dynamic wetting line. Edge guide elements (22, 24) are arranged on both sides supplying a wetting or auxiliary liquid. Each guide element (22, 24) has at least one contact area of its surface directed towards said curtain, which contact area has a multiplicity of grooves (32) and ribs (34) extending along the length of said edge guide elements (22, 24).
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: January 3, 2006
    Assignee: Dow Global Technologies Inc.
    Inventors: Markus Gueggi, Sedat Varli
  • Method and apparatus for curtain coating
    Publication number: 20050011439
    Abstract: An apparatus for curtain coating, particularly for high-speed curtain coating of a continuous paper web substrate (12) is provided with a hopper means (14) providing one or more liquid coating materials in the form of a free-falling curtain (16) impinging the substrate (12) at a dynamic wetting line. Edge guide elements (22, 24) are arranged on both sides supplying a wetting or auxiliary liquid. Each guide element (22, 24) has at least one contact area of its surface directed towards said curtain, which contact area has a multiplicity of grooves (32) and ribs (34) extending along the length of said edge guide elements (22, 24).
    Type: Application
    Filed: December 12, 2002
    Publication date: January 20, 2005
    Inventors: Markus Gueggi, Sedat Varli