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.

公开(公告)号：US20210054570A1

公开(公告)日：2021-02-25

申请号：US16966527

申请日：2019-01-31

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen ,  Jukka Kankkunen ,  Anna Nyberg Zetterlund ,  Jan Lif

IPC: D21H23/28 ,  D21H11/18 ,  D21H19/40 ,  D21H23/48 ,  D21H23/52 ,  D21H23/50 ,  D21H19/66

Abstract: The present invention relates to a process for manufacturing a film comprising high amounts of microfibrillated cellulose (MFC), having haptic properties. According to the present invention, a wet web comprising MFC is formed, followed by addition of particles having an average diameter of at least 1 μm to the wet web, followed by dewatering and/or drying. The wet web may be formed for example by wet laid or cast forming methods. The particles may be added to the wet web for example by cast coating or spraying.

公开(公告)号：US10900169B2

公开(公告)日：2021-01-26

申请号：US14421708

申请日：2013-08-16

Applicant: STORA ENSO OYJ

Inventor： Isto Heiskanen ,  Cecilia Land Hensdal ,  Lars Axrup ,  Heidi Saxell

IPC: D21C9/00 ,  D21H11/18 ,  D21C5/00 ,  D21C9/18 ,  C08L1/02 ,  C12P19/04 ,  C12P19/14 ,  D21H17/00 ,  D21H17/67

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.

公开(公告)号：US20210017717A1

公开(公告)日：2021-01-21

申请号：US16955900

申请日：2018-12-19

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen ,  Jukka Kankkunen

IPC: D21H27/10 ,  D21H11/18 ,  D21H19/22 ,  D21H19/80 ,  B32B27/12 ,  B32B27/32 ,  B29C65/32 ,  B29C65/36 ,  B29C65/00

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.

公开(公告)号：US20210017671A1

公开(公告)日：2021-01-21

申请号：US16955910

申请日：2018-12-20

Applicant: Stora Enso OYJ

Inventor： Gisela Cunha ,  Heidi Saxell

IPC: D01F2/30 ,  D01D5/00 ,  D01D5/04 ,  D04H3/015 ,  D01D5/06 ,  C08B5/00 ,  D03D15/00 ,  A61L15/28

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.

公开(公告)号：US20210016520A1

公开(公告)日：2021-01-21

申请号：US16955903

申请日：2018-12-12

Applicant: Stora Enso OYJ

Inventor： Duncan Mayes ,  Janne Pynnönen ,  Antti Korpela

IPC: B29C70/12 ,  B29B7/00 ,  B29B7/92 ,  B29C48/285 ,  B29C48/29 ,  B29C48/91 ,  B29C48/92 ,  B29C48/94 ,  C08J5/04 ,  C08K5/00 ,  C08K5/092

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.

公开(公告)号：US10857753B2

公开(公告)日：2020-12-08

申请号：US15889250

申请日：2018-02-06

Applicant: STORA ENSO OYJ

Inventor： Tapani Penttinen ,  Kimmo Nevalainen ,  Jurkka Kuusipalo ,  Tapio Koskinen ,  Sami Kotkamo

IPC: A61F13/15 ,  B05D3/00 ,  B29C53/00 ,  B29C65/00 ,  B31C11/04 ,  B31C7/00 ,  B32B37/00 ,  B32B27/00 ,  B65C9/25 ,  C08J5/00 ,  C08J7/18 ,  G21H5/00 ,  B31B50/64 ,  B29C65/02 ,  B29C71/04 ,  B32B9/02 ,  B32B27/12 ,  C08J5/12 ,  C08J7/12 ,  C09J5/06 ,  B32B7/12 ,  B32B27/08 ,  B32B27/10 ,  B32B27/36 ,  B31B50/74 ,  B29C65/10 ,  B29C65/18 ,  B29C35/08 ,  B29K67/00

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.

公开(公告)号：US20200340183A1

公开(公告)日：2020-10-29

申请号：US16955916

申请日：2018-12-20

Applicant: Stora Enso OYJ

Inventor： Gisela Cunha ,  Heidi Saxell

IPC: D21H11/20 ,  D21H11/18 ,  D21C9/00 ,  D21H27/00 ,  A61L15/28

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.