Patents Assigned to Wetend Technologies Ltd.
  • Ply for a board from an in-line production process
    Patent number: 9863093
    Abstract: A ply for a paper and paperboard made from a ply substrate material, wherein the ply comprises a hybrid material, in an amount of 1-25 wt-% of the ply, wherein the hybrid material is introduced into a target suspension of the short circulation of a fibrous web forming process of a fibrous web machine, in an in-line process, wherein said target suspension forms the ply substrate material, and the hybrid material comprises an alkaline earth carbonate precipitated onto or into fibers or fibrils of a nanofibrillated polysaccharide.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: January 9, 2018
    Assignees: Stora Enso OYJ, Wetend Technologies Ltd.
    Inventors: Olavi Imppola, Jouni Matula, Jussi Matula, Karri Tahkola, Matti Vakevainen, Isto Heiskanen, Jari Rasanen
  • In-line production method for paper making process
    Patent number: 9453305
    Abstract: An in-line production method for providing a liquid flow of at least one additive in the short circulation and into the liquid flow of a paper making stock of a fiber web machine by feeding, the liquid flow of the at least one additive to the liquid flow of the short circulation, wherein a suitable amount of a microfibrillated cellulose or nanofibrillated polysaccharide is provided substantially simultaneously with the feeding of liquid flow of the at least one additive.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: September 27, 2016
    Assignees: Stora Enso OYJ, Wetend Technologies Ltd.
    Inventors: Olavi Imppola, Jouni Matula, Jussi Matula, Karri Tahkola, Isto Heiskanen, Matti Vakevainen, Jari Rasanen