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    Process for producing smooth strand-based siding or structural panels using secondary pressing
    2.
    发明授权
    Process for producing smooth strand-based siding or structural panels using secondary pressing 有权

    公开(公告)号：US11639011B2

    公开(公告)日：2023-05-02

    申请号：US15803771

    申请日：2017-11-04

    Applicant: LOUISIANA-PACIFIC CORPORATION

    Inventor： David C. Ritter

    IPC: B27N3/06 ,  B27N3/14 ,  B27N1/00 ,  B27N3/02 ,  B27N3/18 ,  B27N7/00

    Abstract: A process for producing a smooth-sided strand-based siding or wood structural panel using a secondary pressing process. The secondary pressing process is performed after the primary process completes pressing and consolidation of the substrate/board. The secondary process applies and cures the overlay after applying a water spray on the hot board immediately out of the primary process press, and before overlay application. The application of the water spray causes the surface of the board to swell and cure. A settling period follows to allow the top surface particles and strands to swell along with absorption and evaporation of the moisture. This is followed by surface sanding to remove the telegraphing and produce a smooth surface, which is then followed by lamination of the overlay(s). The process is completed by post-lamination treatment and coating of the board.

    WOOD PARTICLE BOARD
    4.
    发明申请
    WOOD PARTICLE BOARD 审中-公开

    公开(公告)号：US20200156347A1

    公开(公告)日：2020-05-21

    申请号：US16630136

    申请日：2018-06-25

    Applicant: IKEA SUPPLY AG

    Inventor： Libor KUVIK

    IPC: B32B7/022 ,  B32B5/16 ,  B32B19/02 ,  B32B19/04 ,  B27N3/02 ,  B27N3/06 ,  E04C2/16 ,  E04C2/24

    Abstract: A wood particle board includes: a core layer formed of resin-covered wood particles with large particle size; at least one surface layer formed of resin-covered wood particles, wherein the at least one surface layer comprises wood particles with particle sizes smaller than the particle sizes of the core layer; and at least one interfoil disposed between a surface layer (1, 4) and the core layer, wherein the at least one interfoil has a surface weight in the range of 5 g/m2 to 600 g/m2 and a thickness in the range of 0.05 to 3 mm.

    POWDER BASED BALANCING LAYER
    6.
    发明申请
    POWDER BASED BALANCING LAYER 审中-公开

    公开(公告)号：US20190277039A1

    公开(公告)日：2019-09-12

    申请号：US16210493

    申请日：2018-12-05

    Applicant: VALINGE INNOVATION AB

    Inventor： Han PERSSON ,  Niclas HAKANSSON ,  Jan JACOBSSON

    IPC: E04F13/10 ,  C09D7/40 ,  E04F15/04 ,  C09D161/28 ,  C09D5/03 ,  C08J7/04 ,  B32B21/14 ,  B32B21/04 ,  B32B21/02 ,  B27N7/00 ,  B27N3/06 ,  E04F13/08

    Abstract: A method of manufacturing a building panel with a decorative surface layer, a core and a balancing and/or protective layer, wherein the method includes applying a first layer of a first powder based mix, including wood fibres and a thermosetting binder, on a core; applying a liquid substance on the first powder based mix; drying the first powder based mix; turning the core with the dried first powder based mix such that the first powder based mix points downwards; applying a second layer on the upper part of the core; and curing the first and second layers by providing heat and pressure, wherein the first layer forms the balancing and/or protective layer and the second layer forms the decorative surface layer in the building panel.

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