HIGHLY REFINED PULP FROM FIBERS OBTAINED FROM USED BEVERAGE CARTONS

    公开(公告)号:US20250043512A1

    公开(公告)日:2025-02-06

    申请号:US18705099

    申请日:2022-10-25

    Applicant: Stora Enso OYJ

    Abstract: The present invention relates to a method for manufacturing a highly refined cellulose composition, comprising: i) providing a fiber fraction comprising 20-100 wt % fibers obtained from used beverage cartons (UBC) based on the total dry fiber weight of the fiber fraction, ii) optionally subjecting the fiber fraction to mechanical, chemical or enzymatic pre-treatment, or a combination thereof, iii) subjecting the optionally pre-treated fiber fraction to refining at a consistency in the range of 0.5-30% by weight to a Schopper-Riegler (SR) in the range of 50-100, as determined by standard ISO 5267-1, to obtain the highly refined cellulose composition.

    Coated paperboard for beverage container carriers and corresponding beverage container carrier

    公开(公告)号:US12179980B2

    公开(公告)日:2024-12-31

    申请号:US18249781

    申请日:2021-10-19

    Applicant: Stora Enso OYJ

    Abstract: The invention relates to a coated paperboard (10) for beverage container carriers (30) comprising: a paperboard substrate (12), a dispersion coating layer (18, 20) on each side (14, 16) of the paperboard substrate (12), wherein the paperboard substrate (12) comprises wet strength agents in an amount in a range from ≥0 wt % to ≤0.05 wt %, based on the dry solid content of the substrate (12) and sizing agents for making the paperboard (12) substrate more hydrophobic, wherein the sizing agents are present in an amount of ≥0.15 wt %, especially in a range from ≥0.15 wt % to ≤0.5 wt %, based on the dry solid content of the substrate (12). The invention further relates to a beverage container carrier (30) comprising or being made from the aforementioned coated paperboard (10).

    METHOD AND DEVICE FOR PRODUCING AN MFC FILM
    10.
    发明公开

    公开(公告)号:US20240141589A1

    公开(公告)日:2024-05-02

    申请号:US18547375

    申请日:2022-02-23

    Applicant: Stora Enso OYJ

    CPC classification number: D21F1/026 B05C5/0254 D21F1/028 D21H11/16

    Abstract: A method of casting an MFC film on a substrate (52) comprises providing an MFC dispersion having a solids content of 2.5-25% by weight, and a viscosity above 4 Pas at a shear rate of 20 s−1; exposing the MFC dispersion to a first shearing step (9), providing a shear rate of above 10 s−1; introducing the MFC dispersion into a film forming device (4), laterally distributing (41) the MFC dispersion: exposing the distributed MFC dispersion to a second shearing step (42), providing a shear rate of above 100 s−1; decelerating (43) the distributed MFC dispersion: exposing the MFC dispersion to a third shearing step (44), providing a shear rate of above 100 s−1; and simultaneously with, or subsequent to, the third shearing step (44), depositing the MFC dispersion on the substrate to form a wet MFC film on the substrate.

Patent Agency Ranking