SURFACE-TREATED GAS BARRIER FILM
    1.
    发明申请

    公开(公告)号:US20250092607A1

    公开(公告)日:2025-03-20

    申请号:US18729241

    申请日:2023-01-31

    Applicant: Stora Enso OYJ

    Abstract: The present invention relates to a method for preparing a surface-treated gas barrier film, said method comprising the steps of: a) providing a gas barrier substrate comprising at least 50 wt % of a highly refined cellulose pulp based on dry weight; and b) surface treatment of the gas barrier substrate, wherein the surface treatment comprises treating a surface of the gas barrier substrate with a solution comprising an organic acid and sodium carbonate and drying the gas barrier substrate to obtain a surface-treated gas barrier film. The invention further relates to a surface-treated gas barrier film obtained according to the method and a packaging laminate comprising the surface-treated gas barrier film.

    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).

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