公开(公告)号：US20210269672A1

公开(公告)日：2021-09-02

申请号：US17258827

申请日：2019-07-08

Applicant: Stora Enso OYJ

Inventor： Jari Kavakka ,  Staffan Torssell

IPC: C09F3/02 ,  B01D15/18 ,  B01D3/10 ,  B01D3/14 ,  B01D15/30 ,  B01D11/04 ,  G01N30/42

Abstract: A method for removing sulfur-containing compounds from crude sulfate turpentine (CST), said method comprising the step of: subjecting CST to continuous liquid-liquid extraction to remove sulfur-containing compounds.

公开(公告)号：US11105045B2

公开(公告)日：2021-08-31

申请号：US16337130

申请日：2017-09-27

Applicant: Stora Enso OYJ

Inventor： Riku Pihko ,  Vesa Kunnari

IPC: D21H11/18 ,  D21F5/00 ,  D21F5/18 ,  D21H19/00 ,  C08L1/02 ,  C08J5/18 ,  C08B15/02

Abstract: The present invention relates to a method for the production of a film comprising microfibrillated cellulose, wherein the method comprises the steps of; providing a suspension comprising between 70 weight-% to 100 weight-% of microfibrillated cellulose based on total dry weight, forming a fibrous web of said suspension, drying the web in a drying equipment wherein the web is at least partly dried at a drying rate above 75 kg(H2O)/m2/h by use of hot air whereby a film is formed. The invention also relates to a film produce according to the method and a paper or paperboard substrate comprising said film.

公开(公告)号：US11098452B2

公开(公告)日：2021-08-24

申请号：US16471990

申请日：2017-12-18

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Chris Bonnerup

IPC: D21H27/10 ,  B65D65/42 ,  D21H19/22 ,  D21H19/60 ,  D21H19/82

Abstract: The invention relates to a method of manufacturing a heat-sealable packaging material, the method comprising the steps of: providing a paperboard substrate comprising a top ply, applying a first dispersion barrier layer on the top ply, wherein the first dispersion barrier layer comprises a latex having a first glass transition temperature, and applying a second dispersion barrier layer on the first barrier layer, wherein the second dispersion barrier layer comprises a latex having a second glass transition temperature, wherein the second glass transition temperature is higher than the first glass transition temperature, wherein the grammage of the second dispersion barrier layer is lower than the grammage of the first dispersion barrier layer, and wherein the second dispersion barrier layer comprises pigments. The invention further relates to a respective heat-sealable packaging material.

公开(公告)号：US20210245481A1

公开(公告)日：2021-08-12

申请号：US17251363

申请日：2019-06-12

Applicant: Stora Enso OYJ

Inventor： Åsa Nyflött ,  Chris Bonnerup ,  Magnus Ekberg

IPC: B32B27/10 ,  B32B27/32 ,  B65D65/38

Abstract: The invention relates to a packaging material comprising: a paperboard substrate comprising a first and a second side, at least one barrier layer applied on the first side of the substrate, the barrier layer comprising a water-soluble polymer selected from the group of polyvinyl alcohol, a copolymer of ethylene and polyvinyl alcohol, starch, carboxymethylcellulose and combinations thereof in an amount of at least 50 weight %, based on the dry weight of the barrier layer, an extrusion coated layer of a polyolefin on the barrier layer, and at least one dispersion barrier layer applied on the second side of the substrate, which at least one dispersion barrier layer forms a printing surface of the packaging material. The invention further relates to a method of manufacturing a respective packaging material.

公开(公告)号：US11084261B2

公开(公告)日：2021-08-10

申请号：US16087207

申请日：2017-03-20

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Esa Saukkonen ,  Ville Ribu

IPC: B32B29/00 ,  B32B27/32 ,  B32B27/08 ,  B32B5/02 ,  B32B7/12 ,  B32B29/08 ,  B32B27/12 ,  B32B27/34 ,  B32B27/10 ,  B32B37/15 ,  D21H11/18 ,  D21H21/16 ,  C08J5/18 ,  B65D65/40 ,  B29C48/21 ,  B29C48/22 ,  B29C48/08 ,  B32B27/30 ,  B29C48/00 ,  B29C48/154 ,  B29K23/00

Abstract: The invention concerns a fibrous-based oxygen barrier film, which comprises (i) a microfibrillated cellulose (MFC) film, (ii) an oxygen barrier polymer layer, (iii) an optional tie layer, and (iv) an outermost polyolefin layer. The invention even concerns a laminate, in which said multilayer film is combined with a fibrous paper or board base by means of an intermediate polyethylene layer. The oxygen barrier polymerlayer, which preferably is EVOH, and the polyolefin layer are brought by coextrusion onto the MFC film. The film and the laminate according to the invention aim at an improved oxygen barrier in high humidity conditions and have use in oxygen-sensitive food packaging.

公开(公告)号：US20210221114A1

公开(公告)日：2021-07-22

申请号：US17256060

申请日：2019-06-25

Applicant: Stora Enso OYJ

Inventor： Seppo Lampainen ,  Frank Peng ,  Atso Laakso ,  Ari-Pekka Määttänen

IPC: B32B29/00 ,  B32B7/12 ,  B32B29/08 ,  B65D65/40 ,  D21H11/02 ,  D21H11/18 ,  D21H11/10 ,  D21H21/18 ,  D21H17/28 ,  D21H17/45 ,  D21H17/68 ,  D21H17/00 ,  D21H27/40 ,  D21H27/10

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 starchor 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.

公开(公告)号：US11034838B2

公开(公告)日：2021-06-15

申请号：US16483149

申请日：2018-02-01

Applicant: Stora Enso OYJ ,  University of Maine System Board of Trustees

Inventor： Duncan Mayes ,  Janne Pynnonen ,  Christopher H. West ,  Douglas J. Gardner ,  Yousoo Han

IPC: C08L97/02 ,  B27K5/00 ,  B27N1/02 ,  B27N3/00 ,  C08L25/08 ,  B27N3/28

Abstract: The present invention is directed to a composite material comprising a cellulosic material, high impact polystyrene (HIPS) and styrene maleic anhydride (SMA). The cellulosic material may be thermally modified prior to being incorporated into the composite material. The present invention is also directed to a composite product that comprises the composite material according to the invention.

公开(公告)号：US20210130209A1

公开(公告)日：2021-05-06

申请号：US17148472

申请日：2021-01-13

Applicant: Stora Enso OYJ ,  Paques I.P. B.V.

Inventor： Erik VAN ZESSEN ,  Michel Paulus Maria NOORDINK ,  Rickard WADSBORN ,  Olli TIMONEN ,  Maria BJÖRK ,  Ari KOTILAINEN

IPC: C02F3/34

Abstract: The present invention relates to a process for the treatment of industrial alkaline streams comprising sulfide and carbonate, comprising the steps of: a) providing an industrial alkaline stream comprising sulfide and carbonate; b) supplying the industrial alkaline stream to a bioreactor comprising sulfide oxidizing bacteria and removing sulfide from the industrial alkaline stream by subjecting said stream to sulfide oxidizing bacteria in the presence of oxygen, and supplying a pH adjustment agent to the bioreactor to maintain a pH in the range in the range 8 to 11, to oxidize the sulfide to elemental sulfur, c) withdrawing from the bioreactor a treated industrial alkaline stream comprising elemental sulfur, wherein a portion of the sulfide oxidizing bacteria is removed from the bioreactor and mixed with the industrial alkaline stream prior to supplying the industrial alkaline stream to the bioreactor in step b).

公开(公告)号：US10941297B2

公开(公告)日：2021-03-09

申请号：US14442186

申请日：2013-11-07

Applicant: Stora Enso OYJ

Inventor： Niklas Garoff ,  Dimitri Areskogh ,  Goran Gellerstedt ,  Stephen Walter ,  Pavan Kumar Manvi ,  Gunnar Seide ,  Thomas Gries

IPC: C08L97/00 ,  D01F9/17 ,  D01F1/10 ,  D01D1/02 ,  D01D5/08 ,  C25C3/12

Abstract: The present disclosure relates to a thermally reactive thermoplastic intermediate product, in the form of a shaped body, wherein the intermediate comprises a composition, wherein the composition comprises a purified or optionally unpurified softwood lignin and at least a first additive.

公开(公告)号：US20210062418A1

公开(公告)日：2021-03-04

申请号：US16977159

申请日：2019-02-18

Applicant: Stora Enso OYJ

Inventor： Philip Håkansson ,  Kaj Backfolk ,  Isto Heiskanen

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

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.