Abstract: A method for the production of highly refined or microfibrillated cellulose (MFC), comprising the steps of treating cellulosic fibres to remove at least a major part of the primary wall of the fibres, drying the treated fibres, rewetting the treated fibres, and disintegrating the wetted fibres by mechanical means to obtain the final product. Dried cellulosic pulp is produced as an intermediate product of the method, having an average fibre length of at least 0.4 mm, while less than 50% of the primary wall material of natural untreated fibres is left in the intermediate product. Instead of transporting large amounts of dilute MFC dispersion the invention enables transport of the dry intermediate product to the MFC end user, who would complete the process by turning the intermediate product to final MFC by use of standard disintegrating devices.
Type:
Grant
Filed:
August 16, 2013
Date of Patent:
January 26, 2021
Assignee:
STORA ENSO OYJ
Inventors:
Isto Heiskanen, Cecilia Land Hensdal, Lars Axrup, Heidi Saxell
Abstract: Methods for producing refined xylan from a biomass solution, including: (i) providing a biomass solution, which comprises xylan; (ii) concentrating or separating said biomass solution to obtain a xylan concentrate comprising xylan and impurities; (iii) washing and/or extracting the xylan concentrate with a solvent to obtain refined xylan and a solvent stream comprising the solvent and impurities; and (iv) collecting the refined xylan.
Abstract: The present invention relates to an improved process for manufacturing an extruded composite product comprising natural fibers and a thermoplastic polymer. According to the present invention, mixing as well as crosslinking takes place inside an extruder. The natural fibers may be provided for example in the form of pulp or wood particles.
Type:
Application
Filed:
December 12, 2018
Publication date:
January 21, 2021
Applicant:
Stora Enso OYJ
Inventors:
Duncan Mayes, Janne Pynnönen, Antti Korpela
Abstract: The present invention relates to a process for preparing a modified wood product wherein the wood is treated with low-molecular weight resin based on lignin degradation products. The present invention also relates to a modified wood product produced using said process.
Type:
Application
Filed:
December 18, 2018
Publication date:
January 21, 2021
Applicant:
Stora Enso OYJ
Inventors:
Marco Fleckenstein, Vladimirs Biziks, Holger Militz, Carsten Mai, Duncan Mayes, Janne Pynnönen
Abstract: A method is provided for preparing a fibrous material (preferably a mat or filaments) of crosslinked microfibrillated cellulose. Phosphorylated microfibrillated cellulose is spun into a fibrous material; and then said fibrous material is post-treated (e.g. by heat-treatment) to provide crosslinking between the phosphorylated microfibrillated cellulose. Fibrous materials such as filaments or mats, and hygiene products comprising such materials are also described.
Abstract: The present invention is directed to a packaging material free from aluminium in the form of a continuous foil or film, comprising a layer of microfibrillated cellulose (MFC), wherein the layer comprising MFC has been laminated or coated on at least one side with a heat-sealable material. The MFC layer contains at least 60% by weight of microfibrillated cellulose. The present invention is also directed to a method for induction sealing, wherein a packaging material to be heat-sealed by induction is placed against an induction heating surface.
Type:
Application
Filed:
December 19, 2018
Publication date:
January 21, 2021
Applicant:
Stora Enso OYJ
Inventors:
Kaj Backfolk, Isto Heiskanen, Esa Saukkonen, Jukka Kankkunen
Abstract: A method (200, 300, 500) for producing an electrically conductive pattern on substrate (202, 402), comprising: providing electrically conductive solid particles onto an area of the substrate in a predefined pattern (508), where the pattern (403) comprises a contact area (404B) for connecting to an electronic component and a conductive structure (404A) having at least a portion (414) adjacent to the contact area, heating the conductive particles to a temperature higher than a characteristic melting point of the particles to establish a melt (510), and pressing the melt against the substrate in a nip, the temperature of the contact portion of which being lower than the aforesaid characteristic melting point so as to solidify the particles into essentially electrically continuous layer within the contact area and within the conductive structure in accordance with the pattern (512), wherein the thermal masses of the contact area and the at least adjacent portion of the conductive structure are configured substant
Abstract: The present invention relates to a method for production of product comprising a first ply, the method comprising the steps of: providing a fibrous suspension comprising fibers; providing said fibrous suspension to a porous medium to form a substrate comprising fibers; providing a first additive suspension comprising a first strengthening agent, wherein the first strengthening agent is microfibrillated cellulose; providing a second additive suspension comprising at least one retention agent and/or at least one drainage agent; dewatering said substrate on said porous medium; performing additive addition to said substrate during said dewatering of said substrate on said porous medium, wherein the additive addition is performed when the substrate has a dry content of less than 20 weight-%, preferably less than 10 weight-%, most preferably less than 7 weight-%, and wherein the additive addition comprises adding at least a layer of said first additive suspension and a layer of said second additive suspension to sa
Type:
Application
Filed:
February 25, 2019
Publication date:
December 31, 2020
Applicant:
Stora Enso OYJ
Inventors:
Kaj Backfolk, Isto Heiskanen, Esa Saukkonen
Abstract: A method and an arrangement for forming a label with an electrically conductive pattern (201?), comprising the steps: providing a first roll (102) of a face material web (200); forming a conductive material (201) in a pattern corresponding to said electrically conductive pattern on a surface of the face material web; providing a second roll (106) of a backing material web (202); applying a layer of adhesive (204) on a surface of the backing material web; forming holes (205) in the backing material web, before or after said application of adhesive; bringing the backing material web and the face material web together, so that the conductive material and the adhesive are facing each other, between the face material web and the backing material web, and whereby the holes are arranged overlying dedicated contact areas formed in the electrically conductive pattern; laminating the face sheet material with the electrically conductive pattern and the backing sheet material with the adhesive together; and re-winding th
Abstract: A cigarette pack (1) comprising a box body (2); an inner wrapper (15), comprising an aluminium layer, is arranged on the inside of the box body (2); a lid (8) connected to the box body by a hinge (9) and capable of opening and closing the upper end of the box body, the lid having an open lower end (10), front wall (11), a rear wall (12), a pair if side walls (18) and a top wall (13, 14) having an outside (13) and an inside (14), which inside (14) faces against the open upper end (3) and the inner wrapper (15) when the lid is in a closed position; an RFID/NFC tag (16) and a distance layer (20), which is arranged on the inside and that the RFID/NFC tag is arranged on the distance layer. The distance layer forces the RFID/NFC tag close to the wrapping material.
Abstract: A method for improving the heat sealability of a packaging material and a method for manufacturing a heat-sealed container or package are described. The material can be polymer-coated packaging paper or cardboard, or a polymeric packaging film. The material includes a polymer layer that contains polyester, particularly polylactide, the heat sealability of which is improved by ultraviolet radiation. Polylactide is useful as such or when blended, for example, with other biodegradable polyester. The containers and packages thus manufactured include disposable drinking cups and cardboard carton and box packages.
Type:
Grant
Filed:
February 6, 2018
Date of Patent:
December 8, 2020
Assignee:
STORA ENSO OYJ
Inventors:
Tapani Penttinen, Kimmo Nevalainen, Jurkka Kuusipalo, Tapio Koskinen, Sami Kotkamo
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.
Type:
Grant
Filed:
April 6, 2020
Date of Patent:
December 1, 2020
Assignee:
Stora Enso Oyj
Inventors:
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
Abstract: The present disclosure relates to a method of producing a laminated wood product, comprising providing a plank presenting a pair of parallel major surfaces, a pair of minor surfaces, a pair of end surfaces and a longitudinal direction parallel with said major and minor surfaces and perpendicular to the end surfaces, said plank having a water content of more than 25% by weight, preferably more than 30% by weight, initializing at least one longitudinal crack in the plank, drying said crack initialized plank to a moisture content of less than 20% by weight, and laminating said crack initialized plank by gluing at least one of its major surfaces to a surface of a second member, thus forming the laminated wood product. The disclosure also relates to a laminated wood product, which may be formed according to the method.
Abstract: The present invention relates to a method for providing a pretreated filler composition for use in paper and board manufacturing including the steps of: a) providing a filler comprising precipitated calcium carbonate, said filler being in the form of a slurry comprising no additives; b) providing at least one polymer selected from polyvinylamine or polyacrylic amide, said polymer having a charge density of an absolute value of at most 4 meq/g determined at pH 7; c) combining said at least one polymer of step b) with the filler of step a); d) providing a slurry of nanofibrillar cellulose; e) combining said nanofibrillar cellulose slurry with the formed combination of step c) and forming a pretreated filler composition comprising aggregates. Further it also relates to a pretreated filler composition prepared therefrom, and its use in stocks, paper and paper board.
Type:
Grant
Filed:
December 17, 2014
Date of Patent:
November 24, 2020
Assignees:
KEMIRA OYJ, UPM-KYMMENE CORPORATION, STORA ENSO OYJ
Inventors:
Matti Hietaniemi, Mikko Virtanen, Katariina Torvinen, Terhi Saari, Erkki Hellen
Abstract: The present invention relates to a method for manufacturing a collar piece (2) comprising an RFID tag (3), which collar piece is intended to be arranged as an inner frame in a cigarette pack (1). The method is characterized in that it comprising the steps of providing a roll of collar material web; forming an RFID antenna directly onto a surface of the collar web material; attaching an RFID IC onto the antenna, such that, an electrical connection between the IC and the antenna is established, such that the RFID tag (3) is formed; and cutting out a single collar piece (2) from the collar web, wherein the collar piece (2) comprising the RFID tag (3).
Abstract: A method is provided for preparing a film of crosslinked microfibrillated cellulose. Phosphorylated microfibrillated cellulose is cast or wet-laid into a film; and then said film is post-treated (e.g. by heat-treatment) to provide crosslinking between the phosphorylated microfibrillated cellulose. Films and hygiene products comprising such films are also described.
Abstract: A method is provided for preparing a fibrous material of crosslinked microfibrillated cellulose. Dialdehyde microfibrillated cellulose is spun into a fibrous material; said fibrous material is pre- or post-treated (by reduction of pH) to provide crosslinking between the dialdehyde microfibrillated cellulose. Fibrous materials such as filaments or mats, and polymer composites comprising such materials are also described.
Abstract: The present invention relates to a method for producing a paperboard comprising the steps of; providing a furnish comprising cellulosic fibers, applying the furnish on at least one wire to form a web, dewatering the web on said at least one wire by subjecting the web to a pressure above 150 kPa without the use of a press roll nip and thereafter pressing the dewatered web to form a paperboard. The invention also relates to a paperboard and a corrugated board.
Abstract: The present invention discloses a paperboard for packaging of liquid and frozen food, comprising a dispersion coating as the only barrier layer on its outside/print side. It has surprisingly been found that a dispersion coating comprising latex and pigment applied on the outside/print side of a paperboard for liquid and/or frozen food may serve as the only barrier against moisture arising from condensation.
Type:
Application
Filed:
December 20, 2018
Publication date:
October 22, 2020
Applicant:
Stora Enso OYJ
Inventors:
Åsa Nyflött, Chris Bonnerup, Magnus Ekberg, Kaj Backfolk
Abstract: The present invention relates to a laminate having oxygen barrier properties, which laminate comprises; a porous fiber based layer comprising nanocellulose and cellulosic fibers wherein said fiber based layer has an air resistance of less than 4000 s/100 ml measured according to ISO5636/6 and a polymer layer attached to at least one side of said fiber based layer to form said laminate. The present invention further relates to a method to produce said laminate and a paper or paperboard product comprising the laminate and the use of the laminate.
Type:
Application
Filed:
December 18, 2018
Publication date:
October 8, 2020
Applicant:
Stora Enso OYJ
Inventors:
Esa Saukkonen, Isto Heiskanen, Ville Ribu