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    METHOD FOR FORMING A COMPOSITE COMPRISING MFC AND A COMPOSITE PRODUCED BY THE METHOD
    162.
    发明申请
    METHOD FOR FORMING A COMPOSITE COMPRISING MFC AND A COMPOSITE PRODUCED BY THE METHOD 审中-公开

    公开(公告)号：US20190024320A1

    公开(公告)日：2019-01-24

    申请号：US16067985

    申请日：2017-01-05

    Applicant: Stora Enso OYJ

    Inventor： Philip Håkansson ,  Isto Heiskanen

    IPC: D21H23/04 ,  C01F11/18 ,  D21H17/67 ,  D21H27/18

    Abstract: The invention provides a method for the production of a composite comprising microfibrillated cellulose (MFC) and precipitated calcium carbonate. The method is characterized in that MFC is added to a suspension of calcium hydroxide during carbonation, whereby calcium carbonate is precipitated onto fibers or fibrils of the MFC in a controlled manner. By adding microfibrillated cellulose to the calcium suspension during the carbonation, the brightness and the strength of the MFC/PCC-composite is enhanced. Moreover, the inventive method facilitates the distribution of calcium dioxide and MFC in the suspension and thus gives rise to a more homogenous product.

    SHAPED TRAY OR PLATE OF FIBROUS MATERIAL AND A METHOD OF MANUFACTURING THE SAME
    164.
    发明申请
    SHAPED TRAY OR PLATE OF FIBROUS MATERIAL AND A METHOD OF MANUFACTURING THE SAME 审中-公开

    公开(公告)号：US20180171560A1

    公开(公告)日：2018-06-21

    申请号：US15737000

    申请日：2016-06-29

    Applicant: Stora Enso OYJ

    Inventor： Isto Heiskanen ,  Jari Rasanen

    IPC: D21H27/38 ,  D21F11/00 ,  D21H21/56

    Abstract: The invention relates to a method of manufacturing a shaped tray or plate of fibrous material. The method comprises the steps of (i) providing a fibrous pulp, in which the fibres substantially consist of at least 85 wt-% of softwood fibres having an average fibre length of at least 2.0 mm and at most 15 wt-% of broke having a fibre length of about 0.05 mm to 1.0 mm, (ii) turning the pulp into a foamed suspension, (iii) supplying the foamed suspension from a headbox to a forming fabric of a board machine to form a fibrous web, (iv) drying the web to obtain a dried web having a compressibility in the thickness direction of at least 20%, and (v) including the web as a layer in a board, which is turned to said tray or plate by thermopressing or deep-drawing. The invention even covers shaped trays and plates produced by use of the method.

    HYDROPHOBICALLY SIZED FIBROUS WEB AND A METHOD FOR THE PREPARATION OF A SIZED WEB LAYER
    167.
    发明申请
    HYDROPHOBICALLY SIZED FIBROUS WEB AND A METHOD FOR THE PREPARATION OF A SIZED WEB LAYER 审中-公开

    公开(公告)号：US20170335522A1

    公开(公告)日：2017-11-23

    申请号：US15588045

    申请日：2017-05-05

    Applicant: STORA ENSO OYJ

    Inventor： Isto Heiskanen ,  Karita Kinnunen ,  Tuomo Hjelt

    IPC: D21H27/30 ,  D21H21/24 ,  D21H21/16 ,  D21H17/17 ,  D21H11/18 ,  D21H11/02 ,  D21H21/56 ,  D21H17/22 ,  D21F11/00

    CPC classification number: D21H27/30 ,  D21F11/002 ,  D21H11/02 ,  D21H11/18 ,  D21H17/17 ,  D21H17/22 ,  D21H21/16 ,  D21H21/24 ,  D21H21/56

    Abstract: The invention relates to a hydrophobically sized fibrous web layer, methods for the preparation of a fibrous web or a fibre-based coating, a multilayer board product having at least a middle layer formed of said fibrous web, as well as use of a heat-sensitive surfactant for said methods and products. According to the method microfibrillated cellulose (MFC) and hydrophobic size are brought to a foam with water and the heat-sensitive surfactant, the foam is supplied to a forming fabric of a paper or board machine, dewatered by suction of air through the forming fabric, and dried to a web product. Alternatively the foam may be supplied onto a premade fibrous web and dried to form a coating layer. To prevent gradual degradation of the hydrophobic sizing the hydrophilic functionality of the surfactant contained in the web is finally destroyed by heating. The method uses e.g. AKD-based surfactants with a hydrophilic moiety, which decompose is decomposed by heat, may be used. If pulp of a greater fibre length, such as CTMP, is also included, a high bulk in combination with a high Scott bond value is achieved, to provide improved wet and dry tensile strength for the paper and board products.

    MIXING DRYING OF NANOFIBRILLATED POLYSACCHARIDE
    168.
    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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