Patents by Inventor Goeran Ekstroem

Goeran Ekstroem 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: 10808359
    Abstract: A method of making tissue paper is provided, in which a fibrous web is formed in a forming section and transferred to a Yankee drying cylinder in a non-dewatering transfer nip formed between the Yankee drying cylinder and a shoe roll. The shoe roll has a shoe that is deformable such that it can adapt to a cylindrical outer surface of the Yankee drying cylinder, and a rotatable flexible jacket arranged to run in a loop around the shoe. A structured carrier fabric runs around the shoe roll and has land areas and void areas facing the fibrous web. The length of the transfer nip is in the range of 30 mm -100 mm and the linear load in the transfer nip is in the range of 35 kN/m-120 kN/m. The peak pressure in the transfer nip lies in the range 2 MPa-8 MPa.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: October 20, 2020
    Assignee: Valmet Aktiebolag
    Inventors: Karl-Johan Tolfsson, Jan Paulsson, Goeran Ekstroem, Joakim Aronsson
  • Publication number: 20190316296
    Abstract: The present invention relates to a method of making tissue paper in which a fibrous web (W) is formed in a forming section (2) and transferred to a Yankee drying cylinder (12) in a non-dewatering transfer nip (TN) formed between the Yankee drying cylinder (12) and a shoe roll (14). The Yankee drying cylinder (12) has a cylindrical outer surface (13) and it is arranged to be rotatable about an axis of rotation (A). The shoe roll (14) has a shoe (15) that is deformable such that it can adapt to the cylindrical outer surface (13) of the Yankee drying cylinder (12) and the shoe roll (14) also comprises a rotatable flexible jacket (16) that is arranged to run in a loop around the shoe (15). A structured carrier fabric (10) runs in a loop around the shoe roll and has land areas and void areas facing the fibrous web.
    Type: Application
    Filed: December 12, 2017
    Publication date: October 17, 2019
    Inventors: Karl-Johan TOLFSSON, Jan PAULSSON, Goeran EKSTROEM, Joakim ARONSSON
  • Patent number: 9181655
    Abstract: The invention relates to an extended nip roll (5) capable of forming a press nip (N) with a counter roll (7) which press nip (N) has an extension in a machine direction when the extended nip roll (5) cooperates with the counter roll (7). The extended nip roll (5) comprises a flexible jacket; an elastic press body (13) arranged inside the flexible jacket. The top side (14) of the press body (13) is beveled in such a way that, in the machine direction, a working surface (15) of the top side has a downstream end (16) which, in the machine direction, is followed by an exit side surface (17) that diverges from the interior surface (11) of the flexible jacket (10). The press body (13) further has at least a first and a second internal pressure chamber (18, 19). The pressure chambers (18, 19) can be pressurized such that the press body (13) expands.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: November 10, 2015
    Assignee: Valmet AB
    Inventors: Tord Gustavsson, Goeran Ekstroem, Jan Paulsson, Karl-Johan Tolfsson