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公开(公告)号：SE546910C2
公开(公告)日：2025-03-11
申请号：SE2330313
申请日：2023-07-05
Applicant: STORA ENSO OYJ
Inventor： KARPPINEN ANNI , BACKFOLK KAJ , NYLÉN OTTO
Abstract: The present invention relates to a method for producing a microfibrillated cellulose (MFC) web. The method comprises preparing an MFC suspension (2) and forming a wet MFC web (7) from the MFC suspension by casting on a non-porous support (8). The wet MFC web positioned on the non-porous support is subjected to water removal by means of dewatering and/or drying to form a dry MFC web (11). Broke material is discharged and collected. Collected broke material (13, 20) is mixed with water to provide at least one broke suspension (16, 22) wherein at least 90 weight-% of each broke suspension passes a Mesh 30 screen according to SCAN-CM 66:05. The broke suspension(s) is/are subjected to a mechanical treatment. The broke suspension(s) is/are used in the preparation of the MFC suspension. The mechanical treatment is performed to increase the viscosity of the broke suspension(s) to at least 60% of the viscosity of the MFC suspension without the broke suspension(s).
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公开(公告)号：SE2330067A1
公开(公告)日：2024-08-08
申请号：SE2330067
申请日：2023-02-07
Applicant: STORA ENSO OYJ
Inventor： KARPPINEN ANNI , BACKFOLK KAJ , NYLÉN OTTO
Abstract: The present invention relates to a method for manufacturing a paper or paperboard based packaging laminate, said method comprising:a) providing a paper or paperboard substrate,b) providing a microfibrillated cellulose (MFC) film comprising at least 50 wt% of MFC based on the dry weight of the MFC film, andc) laminating a surface of the paper or paperboard substrate to a surface of the MFC film by a melt adhesive process using a melt adhesive comprising at least 50 wt% of a water soluble thermoplastic polymer based on the dry weight of the melt adhesive, wherein the melt adhesive is applied to the surface of the paper or paperboard substrate and/or to the surface of the MFC film in a low solvent or solvent free form.
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公开(公告)号：SE544871C2
公开(公告)日：2022-12-20
申请号：SE2150209
申请日：2021-02-26
Applicant: STORA ENSO OYJ
Inventor： BACKFOLK KAJ , NYLÉN OTTO
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.
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公开(公告)号：SE2250236A1
公开(公告)日：2022-08-27
申请号：SE2250236
申请日：2021-02-26
Applicant: STORA ENSO OYJ
Inventor： KRAFT MARKO , NYLÉN OTTO , PIHKO RIKU , KUNNARI VESA
IPC: B05C5/02 , B05C11/10 , B05C19/06 , B05D1/40 , B05D7/24 , B32B29/02 , C08J5/18 , D21H11/18 , D21H19/12 , D21H23/32
Abstract: A device for applying a viscous liquid, in particular an MFC dispersion, onto a moving substrate, comprises an inlet (73a-73f) for the viscous liquid, and a casting chamber (61a, 61b), which extends across a casting chamber width corresponding to an intended film width. A manifold device (7) is configured to divide the inlet into at least two inlet subflow channels (73a-73f), which connect to the casting chamber (61a, 61 b). The inlet subflow channels (73a-73f) are spaced from each other along said casting chamber width.(Fig. 1)
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公开(公告)号：SE544299C2
公开(公告)日：2022-03-29
申请号：SE1951556
申请日：2019-12-23
Applicant: STORA ENSO OYJ
Inventor： KNÖÖS ISABEL , HEISKANEN ISTO , NYLÉN OTTO
IPC: C08J5/18 , B32B7/06 , C09D5/20 , C09D101/02 , C09D191/00 , D21H11/18 , D21H23/28
Abstract: A method for making a cellulose film comprising microfibrillated cellulose (MFC) is provided, said method comprising the step of: applying an aqueous emulsion of one or more vegetable oils to a surface of a casting substrate. Improved release of the MFC film can thus be achieved.
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Patent Agency Ranking16.发明专利
公开(公告)号：SE543802C2
公开(公告)日：2021-07-27
申请号：SE1951544
申请日：2019-12-20
Applicant: STORA ENSO OYJ
Inventor： JÄSBERG ARI , PIHKO RIKU , NYLÉN OTTO
Abstract: The present document discloses a method of determining thickness of a wet film, in particular of microfibrillated cellulose. The method comprises conveying said film (20) in a wet state on a conveyor (10) having a conveyor width, the wet film (20) having a film width which is less than the conveyor width, providing a laser projection (1511) across a film edge, acquiring a series of images, each depicting an area of the conveyor, wherein the laser projection, a portion of the film and a portion of an exposed conveyor surface are visible, and using at least some of said images to determine at least one of a film thickness and a film thickness distribution across the film width.The document also discloses a method of forming a film, in particular a microfibrillated cellulose film, and a device for producing such film.
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公开(公告)号：SE1951556A1
公开(公告)日：2021-06-24
申请号：SE1951556
申请日：2019-12-23
Applicant: STORA ENSO OYJ
Inventor： KNÖÖS ISABEL , HEISKANEN ISTO , NYLÉN OTTO
IPC: C08J5/18 , B32B7/06 , C09D5/20 , C09D101/02 , C09D191/00 , D21H11/18 , D21H23/28
Abstract: A method for making a cellulose film comprising microfibrillated cellulose (MFC) is provided, said method comprising the step of: applying an aqueous emulsion of one or more vegetable oils to a surface of a casting substrate. Improved release of the MFC film can thus be achieved.
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公开(公告)号：SE1951552A1
公开(公告)日：2021-06-24
申请号：SE1951552
申请日：2019-12-23
Applicant: STORA ENSO OYJ
Inventor： HEISKANEN ISTO , BACKFOLK KAJ , NYLÉN OTTO
IPC: D21H23/52 , B05C1/14 , B05D1/28 , B32B3/28 , C08J5/18 , D21H11/18 , D21H17/17 , D21H19/12 , D21H21/16
Abstract: A method is provided for coating a fibrous web, in particular a fibrous web comprising nanocellulose fibres. The method includes steps of applying a coating agent to a textured surface region of a textured substrate, applying a fibre furnish or a wet fibrous web onto the coated textured surface region of the textured substrate, optionally dewatering to provide a wet fibrous web, and drying said wet fibrous web such that at least a portion of said coating agent is transferred to said fibrous web. The method provides a coated fibrous web with improved barrier properties.
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公开(公告)号：SE1951543A1
公开(公告)日：2021-06-21
申请号：SE1951543
申请日：2019-12-20
Applicant: STORA ENSO OYJ
Inventor： NYLÉN OTTO , BACKFOLK KAJ
Abstract: A method of identifying a defect in a wet film comprises conveying said wet film (20), in a wet state, on a conveyor (10), providing a laser projection (1511) onto the wet film, acquiring a series of images, each depicting an area of the wet film, wherein at least a portion of the laser projection is visible, and using at least some of said images to identify said defect.There is also disclosed a method and device for producing a film.
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公开(公告)号：SE1951259A1
公开(公告)日：2021-05-05
申请号：SE1951259
申请日：2019-11-04
Applicant: STORA ENSO OYJ
Inventor： HEISKANEN ISTO , BACKFOLK KAJ , LYYTIKÄINEN KATJA , NYLÉN OTTO
IPC: D21H11/18 , B32B27/06 , B32B29/02 , B65D65/40 , B82Y30/00 , C08L29/04 , C09D101/00 , C09D101/02 , C09D103/00 , C09D105/00 , C09D129/04 , D21H19/00 , D21H19/10 , D21H19/12 , D21H19/20 , D21H19/34 , D21H19/82
Abstract: A barrier material comprising (a) at least one layer of cellulosic substrate comprising MFC, and (b) a first barrier layer arranged on at least one surface of said cellulosic substrate, is provided, as well as a method for reducing the water vapour transmission rate (WVTR) of a cellulosic substrate.
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