公开(公告)号：US11981838B2

公开(公告)日：2024-05-14

申请号：US17048715

申请日：2019-04-16

Applicant: Stora Enso OYJ

Inventor： Ben Nasli Bakir ,  Ashar Zafar ,  Jesper Ekström

IPC: C09J197/00 ,  C08H7/00 ,  C08L97/02 ,  C09J161/06

CPC classification number: C09J197/005 ,  C08H6/00 ,  C08L97/02 ,  C09J161/06

Abstract: The present invention relates to an adhesive formulation comprising lignin, suitable for use in the manufacture of for example wood products. The lignin is provided in the form of a solution or dispersion or in dry solid form, such as in the form of a powder. The adhesive formulation also comprises phenol-formaldehyde (PF) resin and/or lignin-phenol-formaldehyde (LPF) resin. The adhesive formulation may also comprise extenders, hardeners, fillers and other additives, to achieve an adhesive formulation useful in the manufacture of for example wood products, such as plywood and laminated veneer lumber (LVL). The adhesive formulation can also be used in the manufacture of laminates and oriented strand boards.

公开(公告)号：US20240141588A1

公开(公告)日：2024-05-02

申请号：US18548367

申请日：2022-03-08

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Jukka Kankkunen ,  Anna Kauppi

IPC: D21C9/18 ,  D21C11/00

CPC classification number: D21C9/18 ,  D21C11/0042

Abstract: The present invention relates to a method for fractionation of a highly refined cellulose pulp into a fine fraction and coarse fraction, said method comprising: a) providing a highly refined cellulose pulp suspension comprising highly refined cellulose pulp having a Schopper-Riegler (SR) number in the range of 40-98 as determined by standard ISO 5267-1 and a content of fibers having a length >0.2 mm of at least 7 million fibers per gram based on dry weight; b) subjecting the highly refined cellulose pulp suspension to dewatering in a belt filter; c) collecting the dewatered retentate as the coarse fraction; and d) collecting the filtrate as the fine fraction; wherein the collected fine fraction contains 2-50 wt % of the solids of the highly refined cellulose pulp suspension provided in step a).

公开(公告)号：US20230332341A1

公开(公告)日：2023-10-19

申请号：US18042652

申请日：2021-07-09

Applicant: Stora Enso OYJ

Inventor： Martin Malmqvist

IPC: D04H1/732 ,  D04H1/26 ,  D04H1/587 ,  D04H1/60 ,  D04H1/541

CPC classification number: D04H1/732 ,  D04H1/26 ,  D04H1/587 ,  D04H1/60 ,  D04H1/5418

Abstract: An air-laid blank (10) comprises natural fibers at a concentration of at least 70% by weight of the air-laid blank (10) and a thermoplastic polymer binder at a concentration selected within an interval of from 2.5 up to 30% by weight of the air-laid blank (10). The air-laid blank (10) has an average density and a portion (11) of the air-laid blank (10) has a density different from the average density. The air-laid blank (10) is produced by modifying the air-permeability of a portion (121) of an air-permeable collector (120) to form a portion (11) of the air-laid blank (10) having a density from the average density. The air-laid blank (10) has two parallel planar major surfaces (12, 14)

公开(公告)号：US20230313464A1

公开(公告)日：2023-10-05

申请号：US18042120

申请日：2021-08-31

Applicant: Stora Enso OYJ

Inventor： Anna Kauppi ,  Isto Heiskanen ,  Kaj Backfolk ,  Jukka Kankkunen ,  Mikael Hjerpe ,  Juha Korvenniemi

IPC: D21H11/18 ,  D21F1/02 ,  D21H27/30 ,  D21F1/74 ,  D21F1/20 ,  D21F1/10 ,  D21F11/02

CPC classification number: D21H11/18 ,  D21F1/02 ,  D21H27/30 ,  D21F1/74 ,  D21F1/20 ,  D21F1/10 ,  D21F11/02

Abstract: The present invention relates to a method for manufacturing a film comprising highly refined cellulose fibers in a paper-making machine, the method comprising the steps of: a) providing an aqueous pulp suspension comprising at least 20% by dry weight of highly refined cellulose fibers having an SR (Schopper-Riegier) value in the range of 80-100 at a consistency in the range of 0.8-3 wt % and; b) deflocculating and diluting the aqueous pulp suspension to a lower consistency in the range of 0.1-1.5 wt % by injecting the aqueous pulp suspension into an aqueous stream using a high shear mixer to obtain a diluted aqueous pulp suspension; and c) feeding the diluted aqueous pulp suspension to a headbox of the paper-making machine.

公开(公告)号：US20230278975A1

公开(公告)日：2023-09-07

申请号：US18169807

申请日：2023-02-15

Applicant: Stora Enso Oyj

Inventor： Valery Sokolovskii ,  Vincent J. Murphy ,  Thomas R. Boussie ,  Gary M. Diamond ,  Eric L. Dias ,  Guang Zhu ,  James M. Longmire ,  Stanley Herrmann ,  Staffan Torssell ,  Mayya Lavrenko

IPC: C07D307/68 ,  B01J8/02

CPC classification number: C07D307/68 ,  B01J8/02 ,  Y02P20/582 ,  B01J2208/00893

Abstract: The present disclosure provides processes for the production of 2-5-furandicarboxylic acid (FDCA) and intermediates thereof by the chemocatalytic conversion of a furanic oxidation substrate. The present disclosure further provides processes for preparing derivatives of FDCA and FDCA-based polymers. In addition, the present disclosure provides crystalline preparations of FDCA, as well as processes for making the same.

公开(公告)号：US20230219252A1

公开(公告)日：2023-07-13

申请号：US18000868

申请日：2021-06-17

Applicant: Stora Enso OYJ ,  TECHNISCHE UNIVERSITÄT MÜNCHEN

Inventor： Markus Hirmke ,  Frank Hunger

IPC: B27M3/00 ,  B32B21/13 ,  B32B3/06 ,  B32B7/12 ,  B32B38/00 ,  B32B37/12 ,  B32B37/10 ,  E04C2/12 ,  B27F1/04 ,  C09J5/00

CPC classification number: B27M3/0053 ,  B32B21/13 ,  B32B3/06 ,  B32B7/12 ,  B32B38/0004 ,  B32B37/12 ,  B32B37/10 ,  B32B38/164 ,  E04C2/12 ,  B27F1/04 ,  C09J5/00 ,  B32B2317/16 ,  B32B2255/08 ,  B32B2255/26 ,  B32B2607/00 ,  B32B2419/06 ,  B32B2419/00 ,  B32B2038/166

Abstract: The present invention relates to a method of producing a glued wood product for use in construction, comprising the steps of: providing at least two wooden pieces each piece comprising at least one joining face; creating a groove in at least one of said joining faces where the groove is arranged between a pair of peripheral edges; applying adhesive onto at least one of the joining faces of at least a first of said two wooden pieces; arranging said first wooden piece so that the joining face which comprises the applied adhesive meets a corresponding joining face of said second wooden piece, wherein at least one of said two joining faces comprises said groove; pressing the two joining faces towards each other so that the adhesive is compressed between said two wooden pieces, and maintaining said pressing for a sufficient time to bond the wooden pieces to each other; wherein the applied pressing force is strong enough to force the wood tissue to collapse at a contact area until the pressure force is transmitted primarily through the adhesive, wherein said contact area is defined by the surface area whereat the two joining faces of said wooden pieces contact each other upon being pressed together.

公开(公告)号：US11643776B2

公开(公告)日：2023-05-09

申请号：US16977159

申请日：2019-02-18

Applicant: Stora Enso OYJ

Inventor： Philip Håkansson ,  Kaj Backfolk ,  Isto Heiskanen

IPC: D21C9/00 ,  C08B15/08 ,  D21H11/18 ,  C04B16/02

CPC classification number: D21C9/004 ,  C04B16/02 ,  C08B15/08 ,  D21H11/18

Abstract: The invention discloses a method to form a composition, which method includes fibrillating fibers to form MFC in the presence of an alkali-metal silicate whereby an MFC and silicate mixture is formed The presence of alkali-metal silicate during fibrillation of fibers to MFC, reduces the viscosity and increases the water release behavior, whereby the fibrillation can be accomplished at higher concentrations and a more uniform mixture of MFC-silicate is accomplished. The composition formed by the method of the invention may e.g. be used in paper or paperboard production, in cement production or as an additive in composites.

公开(公告)号：US11578463B2

公开(公告)日：2023-02-14

申请号：US16628565

申请日：2018-07-02

Applicant: Stora Enso Oyj ,  Wetend Technologies Oy

Inventor： Esa Saukkonen ,  Isto Heiskanen ,  Kaj Backfolk ,  Jouni Matula ,  Jussi Matula

IPC: D21H23/14 ,  D21H11/18 ,  D21H23/20 ,  D21C9/00

Abstract: A method of dosing a nanocellulose suspension in gel phase into a second suspension, wherein the method comprises the steps of: providing said nanocellulose suspension in gel phase; providing said second suspension; bringing said nanocellulose suspension in gel phase in contact with said second suspension; wherein the method comprises a step of subjecting said nanocellulose suspension in gel phase to a shear rate of more than 500 l/s, simultaneously with and/or immediately prior to the step of bringing said nanocellulose suspension in gel phase and said second suspension in contact with each other.

公开(公告)号：US20230019391A1

公开(公告)日：2023-01-19

申请号：US17757602

申请日：2020-12-11

Applicant: Stora Enso OYJ

Inventor： Seppo Lampainen ,  Janne Myllykangas ,  Petri Paakkanen ,  Atso Laakso ,  Kaj Backfolk

IPC: D21F11/12 ,  D21F1/02 ,  D21F11/04 ,  D21F3/02 ,  B32B29/00 ,  B32B29/08 ,  B32B3/28 ,  B32B7/12

Abstract: The invention relates to a method to produce a linerboard exhibiting a high bending resistance and a high compression strength, which in turn provides high resistance to interflute buckling and sagging in a thereof formed corrugated board. This is achieved by the inventive combination of an optimized fiber refining level of the furnish in each layer of the linerboard, the separate formation of the top layer and the use of a multi-layer headbox to form the two-layered ply. In addition, the linerboard made according to the invention provides good printing properties in a thereof produced corrugated board, especially in flexographic printing, without the fluting structure being negatively affected.

公开(公告)号：US20230009598A1

公开(公告)日：2023-01-12

申请号：US17756984

申请日：2020-12-18

Applicant: Stora Enso OYJ

Inventor： Otto Nylén ,  Kaj Backfolk

IPC: D21F7/06 ,  D21G9/00 ,  D21H11/18 ,  D21F2/00 ,  D21F5/00 ,  G06T7/00 ,  G06T7/60 ,  G06T7/70 ,  G01N21/86 ,  G01N21/89

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.