Patents Assigned to Stora Enso OYJ
  • Patent number: 12146007
    Abstract: The present invention relates to a web of fibrous cellulosic material derived from wood pulp, said web being suitable for three-dimensional moulding to form a packaging product, wherein the web comprises >40 wt % of soft wood chemical pulp and at least one strength enhancement agent, wherein the web has a grammage less than 400 g/m2, and wherein the cellulose fibers of said soft wood chemical pulp comprise a fiber curl of >9%.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: November 19, 2024
    Assignee: Stora Enso OYJ
    Inventors: Isto Heiskanen, Mari Hiltunen, Nina Ruohoniemi, Titta Lammi, Ville Ribu, Tim Lindfors, Jari Räsänen
  • Publication number: 20240376670
    Abstract: The present invention relates to a method for producing a film comprising microfibrillated cellulose, which comprises: providing a suspension comprising 30-100 weight-% microfibrillated cellulose based on total dry weight: forming a wet web of said suspension by casting on a support being a non-porous support, paper or paperboard: wet-pressing said wet web to form a dewatered web, which comprises applying a press fabric into direct contact with said wet web and conducting said wet web, arranged between said press fabric and said non-porous support, through a pressing equipment: smoothening said dewatered web by applying at least one smoothing press to said dewatered web arranged on said non-porous support so as to form a smoothened web, wherein a pressure of 0.1-25 MPa is applied in each smoothing press, wherein said dewatered web has a dry content of 20-60% by weight when applying said smoothing press(es), and drying said smoothened web to form said film. The invention further relates to a film.
    Type: Application
    Filed: August 31, 2022
    Publication date: November 14, 2024
    Applicant: Stora Enso OYJ
    Inventors: Otto Nylén, Isto Heiskanen, Jukka Kankkunen, Kaj Backfolk
  • Publication number: 20240378403
    Abstract: A detection system for detecting RFID tags comprises a cabinet (2) having a door (21) movable between a closed state and an open state. An RFID reader system (27) is provided, and connected to at least one internal reader antenna (25; 25a-d) arranged inside said cabinet (2), for reading RFID tags within the cabinet (2), and at least one external reader antenna (26a-d) arranged outside the cabinet (2), for reading RFID tags outside the cabinet (2). The RFID reader system (27) is configured to detect RFID tags having been moved out from said cabinet (2) based on the readings made by both the internal reader antenna(s) (25; 25a-d) and the external reader antenna(s) (26a-d). A corresponding method is also disclosed.
    Type: Application
    Filed: August 16, 2022
    Publication date: November 14, 2024
    Applicant: Stora Enso OYJ
    Inventor: Ilkka Yli-Peltola
  • Patent number: 12098259
    Abstract: The present invention relates to a porous material comprising cellulose fibres and gluten, wherein the weight proportion of cellulose fibres to gluten is from 1:6 to 6:1, and wherein the porous material has a density of from 5 to 200 kg/m3 as calculated on dry porous material. The present invention also relates to a method for the preparation of the porous material, as well as its use.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: September 24, 2024
    Assignee: STORA ENSO OYJ
    Inventor: Rikard Slattegard
  • Publication number: 20240308741
    Abstract: A paper or paperboard based packaging laminate comprising: a paper or paperboard base layer, a mineral coating layer, a PVOH coating layer, and a metallized film layer, wherein the mineral coating layer is arranged between and in contact with the base layer and the PVOH coating layer, and wherein the metallized film layer is laminated to the PVOH coating layer, and wherein the packaging laminate has an oxygen transfer rate (OTR), measured according to the standard ASTM F-1927 at 90% relative humidity and 38° C., of less than 5 cc/m2/day. Also a container with such a paper or paperboard based packaging laminate.
    Type: Application
    Filed: July 7, 2022
    Publication date: September 19, 2024
    Applicant: Stora Enso OYJ
    Inventors: Chris Bonnerup, Kaj Backfolk, Fredrik Werner
  • Publication number: 20240300690
    Abstract: The disclosure relates to a blank (1) configured to form a package (100), the blank (1) comprising a bottom panel (10), a rear wall panel (21), a front wall panel (22), two opposing end wall panels (31, 32), two opposing sets of top wall panels (40), two rear sets of corner panels (50) and two rear locking flaps (55). Each set of top wall panels (40) is configured to form a double-walled top wall (140) when the blank (1) is erected to form the package (100).
    Type: Application
    Filed: July 12, 2022
    Publication date: September 12, 2024
    Applicant: Stora Enso OYJ
    Inventor: Marie Bondesson
  • Patent number: 12084563
    Abstract: The present invention relates to a refined cellulose fiber composition useful as a strength enhancing agent for paper and paperboard, wherein the refined cellulose fiber composition has a Schopper-Riegler (SR) number in the range of 80-98 as determined by standard ISO 5267-1, and wherein the refined cellulose fiber composition has a content of fibers having a length >0.2 mm of at least 12 million fibers per gram based on dry weight. The invention further relates to a method for preparing the refined cellulose fiber composition and to pulp paper and paperboard comprising the refined cellulose fiber composition.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: September 10, 2024
    Assignee: Stora Enso OYJ
    Inventors: Ulla Jansson, Anders Moberg, Kaj Backfolk
  • Patent number: 12077682
    Abstract: The present invention relates to the use of a bonding resin prepared by providing an aqueous solution comprising at least one biobased product selected from tannin, starch, soy protein, glycerol, chitin, pectin, dextrose or other carbohydrates, or a mixture thereof and mixing the aqueous solution with one or more of certain crosslinkers such as ethers, and optionally one or more additives. The bonding resin is used in the manufacture of laminates, mineral wool insulation or wood products, such as engineered wood products, such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF) or particle boards. Preferably, the bonding resin does not comprise lignin.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: September 3, 2024
    Assignee: Stora Enso OYJ
    Inventors: Ben Nasli Bakir, Ashar Zafar, Jesper Ekström
  • Patent number: 12071518
    Abstract: The present invention relates to an improved process for preparing an aqueous dispersion of lignin and the use of said suspension in the preparation of a resin.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: August 27, 2024
    Assignee: Stora Enso OYJ
    Inventors: Ben Nasli Bakir, Katarina Hägg
  • Publication number: 20240271368
    Abstract: The present invention relates to an aqueous barrier coating composition comprising: 20-80% by weight of a dissolved first polysaccharide having a first degree of polymerization (DP1) of at least 150, based on the total solids content of the aqueous barrier coating composition; and 20-80% by weight of a dissolved second polysaccharide having a second degree of polymerization (DP2) of 100 or less, based on the total solids content of the aqueous barrier coating composition; wherein the ratio of DP1:DP2 is at least 10:1; and wherein the aqueous barrier coating composition has a total solids content in the range of 10-90% by weight.
    Type: Application
    Filed: June 7, 2022
    Publication date: August 15, 2024
    Applicant: Stora Enso OYJ
    Inventors: Åsa Nyflött, Chris Bonnerup, Isabel Knöös, Anders Karlsson
  • Publication number: 20240263399
    Abstract: The present invention relates to a biobased barrier film for a paper or paperboard-based packaging material, said barrier film comprising: a substrate layer and a coating layer disposed on at least one surface of the substrate layer, wherein said substrate layer has a grammage in the range of 1-60 g/m2 and comprises at least 50 wt % of highly refined cellulose pulp based on the dry weight of the substrate layer, and wherein said coating layer has a grammage in the range of 1-15 g/m2 and comprises at least 50 wt % of a film forming modified starch and 0.1-10 wt % of a biobased lubricant, based on the dry weight of the coating layer.
    Type: Application
    Filed: June 3, 2022
    Publication date: August 8, 2024
    Applicant: Stora Enso OYJ
    Inventors: Isto Heiskanen, Kaj Backfolk, Katja Lyytikäinen
  • Publication number: 20240263401
    Abstract: The present invention relates to a multi-ply liner for use in corrugated board, said multi-ply liner comprising: a first ply, and a second ply, wherein said first ply comprises at least 70 wt % unbleached kraft pulp and between 5-30 wt % neutral sulfite semi chemical (NSSC) pulp based on dry weight, and wherein said second ply comprises at least 50 wt % NSSC pulp and between 5-50 wt % unbleached kraft pulp based on dry weight.
    Type: Application
    Filed: May 13, 2022
    Publication date: August 8, 2024
    Applicant: Stora Enso OYJ
    Inventors: Isto Heiskanen, Jukka Kankkunen, Ismo Saarinen, Jukka Lyyra, Juha Rvenniemi, Harri Taipale, Hannu Heikkinen
  • Patent number: 12053964
    Abstract: The invention relates to a ply of a linerboard for corrugated board, which ply exhibits high strength properties and which enables the production of lightweight linerboards. The ply of the invention comprises 20-80 wt % CTMP from wood fibers and 80-20 wt % chemical pulp, calculated on the total fiber weight of said ply and strength additives chosen from the group of microfibrillated cellulose (MFC), anionic or cationic polymers and starch or combinations thereof. The ply exhibits a geometric SCT index of above 22 Nm/g and a density of below 680 kg/m3, preferably of below 650 kg/m3.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: August 6, 2024
    Assignee: Stora Enso OYJ
    Inventors: Seppo Lampainen, Frank Peng, Atso Laakso, Ari-Pekka Määttänen
  • Publication number: 20240252954
    Abstract: The present invention is directed to fractionation of crude tall oil, which originates from the Kraft process black liquor. In the method according to the present invention, strongly basic anion exchange resins are used to efficiently separate fractions from the crude tall oil.
    Type: Application
    Filed: June 20, 2022
    Publication date: August 1, 2024
    Applicant: Stora Enso OYJ
    Inventors: Jari Kavakka, Staffan Torssell
  • Publication number: 20240254694
    Abstract: A method for manufacturing fluting and/or liner for corrugated board, comprising the step(s): a) using broke obtained from manufacturing of liner in the pulp used for manufacturing of fluting wherein at least 50% of the broke is external broke from the manufacturing of liner, and/or b) using broke obtained from manufacturing of fluting in the pulp used for manufacturing of liner wherein at least 50% of the broke is external broke from the manufacturing of fluting.
    Type: Application
    Filed: May 13, 2022
    Publication date: August 1, 2024
    Applicant: Stora Enso OYJ
    Inventors: Isto Heiskanen, Jukka Kankkunen, Ismo Saarinen, Jukka Lyyra, Juha Rvenniemi, Harri Taipale, Hannu Heikkinen
  • Patent number: 12049456
    Abstract: The present disclosure provides processes for the purification of 2,5-furandicarboxylic acid (FDCA). The present disclosure further provides crystalline preparations of purified FDCA, as well as processes for making the same. In addition, the present disclosure provides mixtures used in processes for the purification of FDCA.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: July 30, 2024
    Assignee: Stora Enso Oyj
    Inventors: Henricus Johannes Cornelis Den Ouden, Valery Sokolovskii, Thomas R. Boussie, Gary M. Diamond, Eric L. Dias, Guang Zhu, Staffan Torssell, Vincent J. Murphy
  • Publication number: 20240240408
    Abstract: The present invention relates to a multiply containerboard for use in corrugated board, said multiply containerboard comprising: a first outer ply, a second outer ply, and at least one intermediate ply sandwiched between the first and second outer ply, wherein said first and second outer ply comprise at least 70 wt % neutral sulfite semi chemical (NSSC) pulp based on dry weight, and wherein said intermediate ply comprises at least 30 wt % unbleached kraft pulp based on dry weight and at least one cellulose based strength enhancement agent, and wherein said intermediate ply comprises less than 30 wt % NSSC pulp based on dry weight.
    Type: Application
    Filed: May 13, 2022
    Publication date: July 18, 2024
    Applicant: Stora Enso OYJ
    Inventors: Isto Heiskanen, Jukka Kankkunen
  • Publication number: 20240240403
    Abstract: The present invention relates to a fluting or liner for corrugated board comprising a neutral sulfite semi chemical (NSSC) pulp, wherein said NSSC pulp has an ash content of less than 1.8 wt %, as determined according to standard ISO 1762:2019. The invention further relates to a corrugated board comprising the fluting and/or liner.
    Type: Application
    Filed: May 13, 2022
    Publication date: July 18, 2024
    Applicant: Stora Enso OYJ
    Inventors: Isto Heiskanen, Kaj Backfolk, Jukka Kankkunen, Tuomo Sippus
  • Publication number: 20240240406
    Abstract: The present invention relates to a multiply containerboard for use in corrugated board, said multiply containerboard comprising: a first outer ply comprising a strength enhancement agent, a second outer ply comprising a strength enhancement agent, and an interfacial layer joining said first and second outer ply, wherein each of said first and second outer ply comprise at least 50 wt % neutral sulfite semi chemical (NSSC) pulp based on dry weight, and wherein said interfacial layer comprises a strength enhancement agent in an amount of 0.5-20 gsm wherein the amount of strength enhancement agent in the interfacial layer is higher, preferably at least twice as high as the concentration of the strength enhancement agent in each of the first and second outer ply.
    Type: Application
    Filed: May 13, 2022
    Publication date: July 18, 2024
    Applicant: Stora Enso OYJ
    Inventors: Isto Heiskanen, Jukka Kankkunen
  • Publication number: 20240226947
    Abstract: A device (4) for applying a viscous liquid, in particular an MFC dispersion, onto a moving substrate (52) comprises an inlet (72, 73a-73f) for the viscous liquid, a casting chamber (61a, 61b), a lower portion of which being open to the substrate (52), and a metering portion (69, 661), for limiting a thickness of a wet film that is formed on the substrate downstream of the device. The device further comprises a shear section (42) arranged inside the casting chamber (61a, 61b). The shear section (42) comprises a fluidization rod (68), arranged in the casting chamber (61a, 61b), for providing shearing of the viscous liquid inside the casting chamber (61a, 61b).
    Type: Application
    Filed: February 23, 2022
    Publication date: July 11, 2024
    Applicant: Stora Enso OYJ
    Inventors: Otto Nylèn, Riku Pihko, Vesa Kunnari, Marko Kraft