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    COMPOSITION, FILM OR COATINGH COMPRISING MICROFIBRILLATED CELLULOSE AND EXTRACTIVE FROM WOOD BARK OR CORK WOOD
    2.
    发明申请
    COMPOSITION, FILM OR COATINGH COMPRISING MICROFIBRILLATED CELLULOSE AND EXTRACTIVE FROM WOOD BARK OR CORK WOOD 有权

    公开(公告)号：US20220340735A1

    公开(公告)日：2022-10-27

    申请号：US17753798

    申请日：2020-09-15

    Applicant: Stora Enso OYJ

    Inventor： Cecilia Land Hensdal ,  Venkata Prabhakar Soudham ,  Kaj Backfolk

    IPC: C08L1/02 ,  C08J5/18 ,  C09D101/02 ,  C09D7/63 ,  B65D65/40 ,  B65D65/46

    Abstract: The present invention is directed to a film or coating comprising a fiber material, wherein at least 60% by weight of said fiber material is microfibrillated cellulose, said film or coating also comprising at least 1% by weight of extractives from wood bark or cork wood. The invention is also directed to products, such as packaging materials, using or incorporating said film or coating. Such packaging materials are for example laminates or multi-layer structures. The films or coatings according to the present invention having advantageous barrier properties and are therefore particularly suitable for sensitive objects that need to be packaged in a controlled or modified atmosphere. The present invention is also directed to a composition comprising a fiber material, wherein at least 60% by weight of said fiber material is microfibrillated cellulose, said composition also comprising at least 1% by weight of extractives from wood bark or cork wood. The composition is useful for example in the preparation of the film or coating.

    METHOD FOR THE PREPARATION OF CELLULOSE ETHERS WITH A HIGH SOLIDS PROCESS, PRODUCT OBTAINED AND USES OF THE PRODUCT
    3.
    发明申请
    METHOD FOR THE PREPARATION OF CELLULOSE ETHERS WITH A HIGH SOLIDS PROCESS, PRODUCT OBTAINED AND USES OF THE PRODUCT 审中-公开
    用高固体工艺制备纤维素的方法，产品获得和使用产品

    公开(公告)号：US20150094464A1

    公开(公告)日：2015-04-02

    申请号：US14390519

    申请日：2013-04-04

    Applicant: Stora Enso OYJ

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

    IPC: C08B11/12

    CPC classification number: C08B11/12 ,  C08B1/08

    Abstract: The present invention provides a method for production of cellulose ethers in a high solids process substantially without use of organic solvents as reaction and/or washing medium. In the method of the invention the first alkalization step is carried out by using high solids content cellulose pulp and solid sodium hydroxide. This is followed by an etherification step where the solids content is preferably further increased and the use of solid etherification reactant is preferred. As no organic solvents are used as reaction media the invented method enables production of cellulose ethers directly from never dried pulp with significant savings in energy and investment costs. The method is especially suitable for the production of carboxymethyl cellulose sodium salt (CMC) with low degree of substitution (DS

    Abstract translation: 本发明提供了一种基本上不使用有机溶剂作为反应和/或洗涤介质的高固含量方法生产纤维素醚的方法。 在本发明的方法中，通过使用高固含量的纤维素纸浆和固体氢氧化钠来进行第一碱化步骤。 之后是醚化步骤，其中固体含量优选进一步增加，并且优选使用固体醚化反应物。 由于不使用有机溶剂作为反应介质，本发明的方法可以直接从未干燥的纸浆生产纤维素醚，从而显着节省能源和投资成本。 该方法特别适用于低取代度（DS <0.3）的羧甲基纤维素钠盐（CMC）的生产。 所得到的无水或低水溶性羧甲基化纤维素纤维的使用适用于例如用于生产微纤化纤维素。

    Method of producing microfibrillated cellulose
    5.
    发明授权
    Method of producing microfibrillated cellulose 有权

    公开(公告)号：US10240288B2

    公开(公告)日：2019-03-26

    申请号：US14758708

    申请日：2013-12-30

    Applicant: Stora Enso OYJ

    Inventor： Isto Heiskanen ,  Henri Kastinen ,  Anna Kauppi ,  Jukka Kankkunen ,  Lars Axrup ,  Cecilia Land Hensdal ,  Heidi Saxell ,  Kaj Backfolk

    IPC: D21C9/00 ,  D21H11/18 ,  D21H17/00 ,  D21H11/04 ,  C08B15/08 ,  C08L1/04 ,  D21D1/20

    Abstract: The invention relates to methods of producing microfibrillated cellulose (MFC). According to the invention a fibrous pulp suspension is fibrillated mechanically at a consistency of less than 12.5%, dewatered to raise the consistency of the fibrillated suspension to at least 12.5%, and then subjected in the dewatered condition to further fibrillation. Alternatively an initially fibrillated fibrous pulp suspension may be dewatered and fibrillated in the dewatered condition, after which these dewatering and fibrillating steps are repeated one or more times so that pulp consistency is increased for each fibrillation step. The goals of raising the consistency between subsequent fibrillations are energy saving and an increased aspect ratio in MFC. The invention even comprises uses of the MFC product, e.g. as an additive for papermaking furnish or injection molded plastic composites.

    CELLULOSE-BASED GAS BARRIER FILM
    6.
    发明申请
    CELLULOSE-BASED GAS BARRIER FILM 有权

    公开(公告)号：US20250059710A1

    公开(公告)日：2025-02-20

    申请号：US18717642

    申请日：2022-12-12

    Applicant: Stora Enso OYJ

    Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Anna Kauppi ,  Katja Lyytikäinen ,  Cecilia Land Hensdal ,  Anders Moberg

    IPC: D21H11/18 ,  B32B29/00 ,  B65D65/40 ,  D21H27/10

    Abstract: The present invention relates to a cellulose-based gas barrier film, said cellulose-based gas barrier film comprising at least 50 wt % of a fines-depleted highly refined cellulose pulp (FD-HRC), wherein said FD-HRC has a Schopper-Riegler (SR) number in the range of 80-100 as determined by standard ISO 5267-1, wherein said FD-HIRC has an amount of long (>0.2 mm) fibers of at least 8 million fibers per gram (based on dry weight), and wherein said FD-HRC has a Fines A value below 46%, wherein the Fines A value is determined using an FS5 optical fiber analyzer. The present invention relates to a method for manufacturing said cellulose-based gas barrier film.

    MIXING DRYING OF NANOFIBRILLATED POLYSACCHARIDE
    10.
    发明申请
    MIXING DRYING OF NANOFIBRILLATED POLYSACCHARIDE 审中-公开
    NANOFIBRILLATED POLYSACCHARIDE的混合干燥

    公开(公告)号：US20150308017A1

    公开(公告)日：2015-10-29

    申请号：US14441263

    申请日：2013-10-30

    Applicant: Stora Enso Oyj

    Inventor： Kaj Backfolk ,  Heidi Saxell ,  Isto Heiskanen ,  Lars Axrup ,  Cecilia Land Hensdal ,  Veikko Jokela ,  Esa Saukkonen ,  Ari Kotilainen ,  Henri Kastinen ,  Anna Kauppi

    IPC: D01F2/00

    CPC classification number: D01F2/00 ,  C08L1/04 ,  D21C9/007 ,  D21C9/06 ,  D21C9/18 ,  D21H11/18 ,  F26B3/36

    Abstract: A method for drying nanofibrillated polysaccharide to obtain a substantially dry nanofibrillated polysaccharide product, comprising the following steps: (i) providing an aqueous suspension of nanofibrillated polysaccharide; (ii) increasing the solid content of said suspension, thereby forming a high solid content microfibrillated cellulose suspension; and (iii) drying said high solid content microfibrillated cellulose suspension, through a simultaneous heating and mixing operation.

    Abstract translation: 一种干燥纳米纤维化多糖以获得基本干燥的纳米纤维化多糖产物的方法，包括以下步骤：（i）提供纳米纤维化多糖的水性悬浮液; （ii）增加所述悬浮液的固体含量，从而形成高固体含量的微纤化纤维素悬浮液; 和（iii）通过同时加热和混合操作来干燥所述高固含量微纤化纤维素悬浮液。

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