公开(公告)号：US11319671B2

公开(公告)日：2022-05-03

申请号：US16080359

申请日：2017-03-30

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen ,  Katja Lyytikäinen

IPC: D21H11/18 ,  D21H17/68 ,  D21H17/37 ,  D21H17/28 ,  D21H17/55 ,  D21H21/10 ,  D21H27/38 ,  D21H17/44 ,  D21H17/29 ,  D21H21/52 ,  D21H17/24 ,  D21H27/10 ,  D21H17/13 ,  D21H21/50 ,  B82Y30/00

Abstract: The present invention relates to a new process for improving dewatering when manufacturing a film comprising high amounts of microfibrillated cellulose (MFC) without negatively impacting the film properties. According to the present invention a high amount of nanoparticles is used as an additive, optionally together with a polymer.

公开(公告)号：US20220106446A1

公开(公告)日：2022-04-07

申请号：US17643970

申请日：2021-12-13

Applicant: Stora Enso OYJ

Inventor： Ben Nasli Bakir ,  Dimitri Areskogh

IPC: C08J3/03 ,  C08L97/00 ,  B27N3/00

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.

公开(公告)号：US20220074140A1

公开(公告)日：2022-03-10

申请号：US17415878

申请日：2019-12-20

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Katja Lyytikäinen ,  Otto Nylén ,  Kaj Backfolk

IPC: D21C9/00 ,  D21H11/18 ,  D21H17/28

Abstract: The present invention relates to a method for preparing a surface-treated fibrous material comprising nanocellulose, in which a fibrous material is surface treated with an organic acid or salt thereof. Fibrous materials as such are also provided. The present technology allows improved Water Vapor Transmission Rates (WVTR) for the fibrous material, while operating on an industrial scale.

公开(公告)号：US11248343B2

公开(公告)日：2022-02-15

申请号：US16755387

申请日：2018-10-09

Applicant: Stora Enso OYJ

Inventor： Isabel Knöös

IPC: D21H11/18 ,  D21C5/00 ,  D21H27/10

Abstract: The present invention relates to a process for improving the strechability of films comprising high amounts of microfibrillated cellulose (MFC) without negatively impacting the oxygen barrier properties. According to the present invention, a film is formed from a suspension comprising microfibrillated cellulose having a broad size distribution.

公开(公告)号：US11244220B2

公开(公告)日：2022-02-08

申请号：US16760992

申请日：2018-10-31

Applicant: Stora Enso OYJ

Inventor： Lauri Huhtasalo ,  Eerik Halonen ,  Juha Ikonen

IPC: G06K19/077 ,  G06K19/07

Abstract: Method for manufacturing an RFID tag comprising an IC and an antenna. The method comprising the steps of providing an antenna made of a soldering material, which antenna is at least partly covered with a hot melt adhesive in solid form; heating the antenna to a temperature above its melting point, wherein the heated parts of the antenna and the hot melt adhesive melt, placing an IC in a predetermined position which position is suitable for the IC to connect to the antenna; pressing the IC and antenna together, such that, an electrical connection between the IC and the antenna is established; and cooling RFID tag, such that the hot melt adhesive and the antenna solidify, wherein a soldered joint between the IC and the antenna is achieved and the hot melt adhesive surrounds the joint between the IC and the antenna.

公开(公告)号：US11242652B2

公开(公告)日：2022-02-08

申请号：US16075715

申请日：2017-02-17

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Esa Saukkonen

IPC: D21H15/00 ,  D21H11/18 ,  D21H11/16 ,  B65D65/38 ,  B65D85/10 ,  D21H17/35 ,  D21H17/67 ,  D21H17/68 ,  D21H19/10 ,  D21H15/02 ,  D21F11/02 ,  D21H21/28 ,  D21H27/10

Abstract: A sheet having dead-fold properties, wherein said sheet comprises cellulose fibers whereof at least 75%, preferably at least 90%, or more preferably at least 95% of said cellulose fibers have a fiber length of less than 1 mm, and wherein the tensile strength ratio (MD/CD) of the film is above 1.4, preferably higher than 1.6 and most preferably higher than 1.8.

公开(公告)号：US20220002947A1

公开(公告)日：2022-01-06

申请号：US17291360

申请日：2019-10-30

Applicant: Stora Enso OYJ

Inventor： Juhani Hyytiäinen ,  Raino Kauppinen ,  Antti Outinen

IPC: D21H19/54 ,  D21H19/58 ,  D21H19/64 ,  D21H19/84 ,  D21H23/24 ,  B41M5/50

Abstract: The present invention provides a book paper suitable for both inkjet and offset printing. The inventive printing paper comprises a base substrate with a grammage of below 100 gsm comprising at least 50 wt % mechanical cellulosic pulp fibers and having a total filler content of below 15 wt %. The substrate is surface treated with a composition comprising pigments in a range of 15-30 wt %, starch in a range of 20-40 wt %, latex in a range of 10-20 wt % and a multivalent metal salt in a range of 10-30 wt %.

公开(公告)号：US11198973B2

公开(公告)日：2021-12-14

申请号：US16465426

申请日：2017-11-30

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

IPC: D21H11/18 ,  D21H17/68 ,  D21H17/29 ,  D21H17/55 ,  D21H17/45 ,  D21H23/04

Abstract: The present invention relates to a process wherein microfibrillated cellulose (MFC) is mixed with at least two retention aids, selected from a cationic or amphoteric polymer and a microparticle or nanoparticle as a pre-mix before dosing it to the stock in a process for manufacture of a fiber based product.

公开(公告)号：US11192987B2

公开(公告)日：2021-12-07

申请号：US16489801

申请日：2018-02-27

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

IPC: C08J5/18 ,  C08L1/02 ,  C08K3/36 ,  C08K3/34 ,  D21H17/68 ,  D21H11/18 ,  D21H21/52

Abstract: The present invention relates to a new process for improving runnability and dimensional stability when manufacturing a film comprising high amounts of microfibrillated cellulose (MFC) without negatively impacting the film properties. According to the present invention a high amount of nanoparticles is used as an additive, optionally together with a retention polymer.

公开(公告)号：US11161948B2

公开(公告)日：2021-11-02

申请号：US16096800

申请日：2017-04-26

Applicant: Stora Enso OYJ

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

IPC: C08J5/18 ,  B65D81/20

Abstract: The present invention is directed to a film comprising a base film which has been coated on at least one side with a coating that enhances gas and/or moisture barrier properties, wherein the base film comprises a fiber material and at least 60% by weight of said fiber material is microfibrillated cellulose, and the thickness of the coating is from 0.05 to 20 μm. The invention is also directed to products using said film. Such products are in particular packages suitable for sensitive objects that need to be packaged in a controlled or modified atmosphere. The film is also useful for other purposes, such as in the manufacture of balloons.