Spraying of microfibrillated cellulose

    公开(公告)号:US12083554B2

    公开(公告)日:2024-09-10

    申请号:US17311672

    申请日:2019-12-16

    Applicant: Borregaard AS

    Inventor: Anne Opstad

    CPC classification number: B05D1/12 B05D3/02 D21C9/007 D21H11/18

    Abstract: A process for the spraying of microfibrillated cellulose (MFC) is presented, which has a comparatively high solids content, onto a surface, thus forming a stable and homogeneous film coating of MFC on said surface. Therein, the MFC of the comparatively high solids content is subjected to a pressure drop in a nozzle, which pressure drop exerts shear pressure onto the MFC, thus lowering the viscosity during the spraying and coating process.

    SUBSTRATE PROCESSING APPARATUS AND SUBSTRATE PROCESSING METHOD

    公开(公告)号:US20240189856A1

    公开(公告)日:2024-06-13

    申请号:US18282025

    申请日:2022-03-01

    CPC classification number: B05C9/14 B05C15/00 B05D3/02 B05D3/0466

    Abstract: A substrate processing apparatus that forms a friction reducing film on a rear surface of a substrate includes a processing container configured to accommodate the substrate and to define a hermetically-sealed processing space, a heating element configured to heat the rear surface of the substrate inside the processing container, a supplier configured to supply a material forming the friction reducing film toward the rear surface of the substrate inside the processing container, a first gas supplier configured to supply an inert gas to a peripheral edge of the substrate from a space above the substrate, a second gas supplier configured to supply the inert gas closer to a center of the substrate than the first gas supplier from a space above the substrate inside the processing, and an exhauster configured to exhaust an atmosphere of the processing space from a periphery or a space below the substrate.

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