Patents Assigned to Stora Enso OYJ
  • Publication number: 20250067002
    Abstract: The present invention relates to a method for the preparation of a solid foam, wherein the method comprises depositing discrete units of a foam on a surface to obtain a first foam deposition, followed by depositing a wet foam between the discrete units to obtain a subsequent foam deposition, and drying the wet foam. The invention further relates to a solid foam comprising discrete units of foam embedded in a foam matrix.
    Type: Application
    Filed: December 22, 2022
    Publication date: February 27, 2025
    Applicant: Stora Enso OYJ
    Inventors: Oruç Köklükaya, Daniel Hult Torron, Maryam Ghanadpour, Martin Sterner
  • Patent number: 12234605
    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.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: February 25, 2025
    Assignee: Stora Enso OYJ
    Inventors: Seppo Lampainen, Janne Myllykangas, Petri Paakkanen, Atso Laakso, Kaj Backfolk
  • Patent number: 12234577
    Abstract: The present invention relates to a method for manufacturing precursor yarn comprising lignin, which may be further processed into intermediate carbon fibers and finally also carbon fibers. It also relates to carbon fibers and uses of said fibers. Said method involves applying a water-free spin finish.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: February 25, 2025
    Assignee: Stora Enso OYJ
    Inventors: Niklas Garoff, Robert Protz, Jens Erdmann, Johannes Ganster, Andre Lehmann
  • Patent number: 12234071
    Abstract: The invention discloses a corrugated packaging material with a low weight and high strength properties, which material can be recycled with the office paper recycling stream. The corrugated packaging material of the invention exhibits good strength and stiffness properties, a low wash board tendency and provides a good printing surface.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: February 25, 2025
    Assignee: Stora Enso OYJ
    Inventors: Irene Wedin, Dan Persson Norgren, Reijo Vapa, Seppo Lampainen, Kalle Vertanen
  • Publication number: 20250062318
    Abstract: The present invention is directed to a method for producing a thermally stabilized agglomerated lignin-carbon composite material. The method involves the steps of providing an agglomerated lignin-carbon composite material comprising lignin and at least one carbon additive; and heating the agglomerated lignin-carbon composite material to obtain the thermally stabilized agglomerated lignin-carbon composite material. The invention is also directed to a granular carbon-carbon composite material obtained by heat treatment of the thermally stabilized agglomerated lignin-carbon composite material.
    Type: Application
    Filed: December 7, 2022
    Publication date: February 20, 2025
    Applicant: Stora Enso OYJ
    Inventors: Vilhelm Olsson, Stephan Walter, Mario Wachtler, Mats Lindström
  • Publication number: 20250059710
    Abstract: The present invention relates to a cellulose-based gas barrier film, said cellulose-based gas barrier film comprising at least 50 wt % of a fines-depleted highly refined cellulose pulp (FD-HRC), wherein said FD-HRC has a Schopper-Riegler (SR) number in the range of 80-100 as determined by standard ISO 5267-1, wherein said FD-HIRC has an amount of long (>0.2 mm) fibers of at least 8 million fibers per gram (based on dry weight), and wherein said FD-HRC has a Fines A value below 46%, wherein the Fines A value is determined using an FS5 optical fiber analyzer. The present invention relates to a method for manufacturing said cellulose-based gas barrier film.
    Type: Application
    Filed: December 12, 2022
    Publication date: February 20, 2025
    Applicant: Stora Enso OYJ
    Inventors: Isto Heiskanen, Kaj Backfolk, Anna Kauppi, Katja Lyytikäinen, Cecilia Land Hensdal, Anders Moberg
  • Publication number: 20250059712
    Abstract: The present invention relates to a strength enhancement agent for paper and paperboard, said strength enhancement agent comprising a fines-depleted highly refined cellulose pulp (FD-HIRC), wherein said FD-HIRC has a Schopper-Riegler (SR) number in the range of 60-100 as determined by standard ISO 5267-1, and wherein said FD-HRC has an amount of long (>0.2 mm) fibers of at least 8 million fibers per gram (based on dry weight), and wherein said FD-HRC has a Fines A value below 46, wherein the Fines A value is determined using an FS5 optical fiber analyzer. The present invention relates to a method for manufacturing said strength enhancement agent.
    Type: Application
    Filed: December 12, 2022
    Publication date: February 20, 2025
    Applicant: Stora Enso OYJ
    Inventors: Kaj Backfolk, Isto Heiskanen, Anders Moberg, Katja Lyytikäinen, Cecilia Land Hensdal, Anna Kauppi
  • Publication number: 20250051623
    Abstract: The present invention relates to a bonding resin useful for example in the manufacture of laminates, mineral wool insulation and wood products such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiber-boards (MDF), high density fiberboards (HDF), parquet flooring, curved plywood, veneered particleboards, veneered MDF or particle boards. The bonding resin is also useful for example in composites, molding compounds and foundry applications. The invention also relates to a method for preparing the bonding resin. The bonding resin comprises an aqueous solution comprising lignin and/or tannin and ammonia and/or an organic base and hydroxymethylfurfural, furfural, furfuryl alcohol, acetoxy methyl furfural or an oligomer of hydroxy methylfurfural or a combination thereof and optionally one or more crosslinker and optionally one or more additives.
    Type: Application
    Filed: December 19, 2022
    Publication date: February 13, 2025
    Applicant: Stora Enso OYJ
    Inventors: Ashar Zafar, David Almqvist, Dimitri Areskogh, Huynh Tram Anh Pham
  • Patent number: 12221545
    Abstract: The present invention relates to a liquid lignin composition, particularly useful in the manufacture of resins for products such as insulation, laminates and engineered wood products such as oriented strand boards (OSB). The liquid lignin composition has a low viscosity even at low water content.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: February 11, 2025
    Assignee: Stora Enso OYJ
    Inventors: Ashar Zafar, Jesper Ekström, Dimitri Areskogh
  • Patent number: 12220836
    Abstract: The present invention relates to a process for preparing a modified wood product wherein a step of resin treatment is followed by a thermal modification step. The present invention also relates to a modified wood product produced using said process.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: February 11, 2025
    Assignee: Stora Enso OYJ
    Inventors: Duncan Mayes, Janne Pynnönen, Reeta-Maria Stöd
  • Publication number: 20250043512
    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.
    Type: Application
    Filed: October 25, 2022
    Publication date: February 6, 2025
    Applicant: Stora Enso OYJ
    Inventors: Carl-Henrik Ljungqvist, Isto Heiskanen, Kaj Backfolk
  • Publication number: 20250046816
    Abstract: The present invention is directed to a method for producing an agglomerated lignin-silicon composite material. The method involves the steps of mixing lignin in powder form, at least one silicon-containing active material in powder form and optionally at least one additive; compacting the mixture; and crushing the compacted composite material to obtain an agglomerated lignin-silicon composite material. The invention is also directed to a granular carbon-silicon composite material obtained by heat treatment of the agglomerated lignin-silicon composite material.
    Type: Application
    Filed: December 7, 2022
    Publication date: February 6, 2025
    Applicant: Stora Enso OYJ
    Inventors: Vilhelm Olsson, Stephan Walter, Mario Wachtler
  • Publication number: 20250026110
    Abstract: The present invention relates to a packaging material comprising a paperboard substrate comprising a first and a second side, an extrusion coated polymer layer attached to the first side, which polymer layer comprises polyethylene (PE) with a melt index in the range of 7-10 g/10 min, as measured using ASTM D1238, wherein the polymer layer has a grammage of less than 12 gsm, preferably less than 10 gsm. The invention further relates to a method of producing such a packaging material and a cup being made from or comprising said packaging material.
    Type: Application
    Filed: November 28, 2022
    Publication date: January 23, 2025
    Applicant: Stora Enso OYJ
    Inventors: Kimmo Nevalainen, Inkeri Perttu-Ukonaho, Esa Suikkanen, Minna Vuorimaa, Timo Lankinen, Anna Veijalainen
  • Publication number: 20250018703
    Abstract: The present invention relates to a barrier laminate comprising: a first cellulose substrate comprising highly refined cellulose fibers; a tie layer comprising a hot melt adhesive and a second cellulose substrate wherein the peeling strength between the second substrate and the tie layer is between 3-5 N. The present invention also relates to a method for manufacturing said barrier laminate.
    Type: Application
    Filed: November 10, 2022
    Publication date: January 16, 2025
    Applicant: Stora Enso OYJ
    Inventor: Sami-Seppo Ovaska
  • Patent number: 12194654
    Abstract: The present invention relates to a process for preparing laminated veneer lumber treated with microfibrillated cellulose. The invention also relates to a modified laminated veneer lumber product produced using said process.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: January 14, 2025
    Assignee: Stora Enso OYJ
    Inventor: Janne Pynnönen
  • Publication number: 20250012011
    Abstract: The present invention relates to a method for manufacturing a purified fiber fraction from used beverage carton (UBC), said method comprising the steps: a) subjecting UBC starting material to a polymer and aluminum film separation method to obtain a UBC polymer and aluminum fraction and a raw UBC fiber fraction; b) optionally subjecting the raw UBC fiber fraction to a coarse screening method to remove coarse particles; c) subjecting the raw UBC fiber fraction to a fine screening method to remove cellulose fines and fine particulate contaminants, wherein the fine screening method comprises at least one fine screening step and at least one washing step; d) optionally subjecting the fine screened UBC fiber fraction to a washing method to remove further contaminants; e) optionally subjecting the fine screened UBC fiber fraction to a bleaching method; f) subjecting the fine screened, and optionally bleached, UBC fiber fraction to a dewatering method to a consistency of at least wt %; and g) subjecting the dewatere
    Type: Application
    Filed: October 25, 2022
    Publication date: January 9, 2025
    Applicant: Stora Enso OYJ
    Inventors: Carl-Henrik Ljungqvist, Lena Tollnerius, Kaj Backfolk
  • Publication number: 20250002723
    Abstract: The present invention is directed to a process for preparing a binder for an asphalt composition. The binder comprises lignin, a renewable and bio-based material, which replaces part of the fossil-based bitumen.
    Type: Application
    Filed: November 8, 2022
    Publication date: January 2, 2025
    Applicant: Stora Enso OYJ
    Inventors: Heikki Lotti, Jesper Ekström, Dimitri Areskogh
  • Patent number: 12179980
    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).
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: December 31, 2024
    Assignee: Stora Enso OYJ
    Inventor: Carl-Henrik Ljungqvist
  • Publication number: 20240425701
    Abstract: The present invention is directed to a process for preparing a binder for an asphalt composition. The binder comprises lignin, a renewable and bio-based material, which replaces part of the fossil-based bitumen.
    Type: Application
    Filed: November 8, 2022
    Publication date: December 26, 2024
    Applicant: Stora Enso OYJ
    Inventors: Heikki Lotti, Jesper Ekström, Dimitri Areskogh
  • Publication number: 20240426060
    Abstract: The present invention relates to a method for manufacturing a multiply paperboard, comprising forming a first web on a first wire, a second web on a second wire and a third web on a third wire. The second web comprises a delamination web layer formed from a second pulp suspension comprising 5-80 weight-% refined CTMP and/or CMP. A first coating layer comprising 0.2-20 g/m2 starch is applied to a non-wire side of the first web by curtain application. A second coating layer comprising 0.2-20 g/m2 starch is applied to a non-wire side of the second web or the third web by curtain application. A multilayer web is formed by joining the third web with the second web via the second bonding layer and by joining the second web and the first web via the first bonding layer. The multilayer web is further dewatered and optionally dried to form the multiply paperboard. The invention relates also to a multiply paperboard.
    Type: Application
    Filed: October 12, 2022
    Publication date: December 26, 2024
    Applicant: Stora Enso OYJ
    Inventor: Pasi Valkamo