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    A method for the production of a coated film comprising microfibrillated cellulose
    71.
    发明专利
    A method for the production of a coated film comprising microfibrillated cellulose 未知

    公开(公告)号：SE541275C2

    公开(公告)日：2019-06-04

    申请号：SE1651734

    申请日：2016-12-22

    Applicant: STORA ENSO OYJ

    Inventor： SAUKKONEN ESA ,  HEISKANEN ISTO

    IPC: C08J5/18 ,  B32B29/02 ,  D21C9/18 ,  D21F5/00 ,  D21H11/18 ,  D21H19/34 ,  D21H23/26

    Abstract: The present invention relates to a method for the production of a coated film comprising microfibrillated cellulose, wherein the method comprises the steps of; providing a first suspension comprising microfibrillated cellulose, applying the first suspension on a substrate to form a fibrous web, wherein the web has a first and a second side, providing a second suspension comprising microfibrillated cellulose, applying the second suspension either to the first side of the fibrous web or to a surface of a drying equipment and conducting said fibrous web through the drying equipment whereby the second suspension is added to the first side of the web forming the coated film. The invention also relates to a film produced according to the method.

    A METHOD TO PRODUCE A FILM COMPRISING MICROFIBRILLATED CELLULOSE AND AN AMPHOTERIC POLYMER
    74.
    发明专利
    A METHOD TO PRODUCE A FILM COMPRISING MICROFIBRILLATED CELLULOSE AND AN AMPHOTERIC POLYMER 未知

    公开(公告)号：ZA201800795B

    公开(公告)日：2018-12-19

    申请号：ZA201800795

    申请日：2018-02-07

    Applicant: STORA ENSO OYJ

    Inventor： HEISKANEN ISTO ,  BACKFOLK KAJ

    Abstract: A method for the production of a film from a fibrous web, wherein the method comprises the steps of: providing a fibrous suspension comprising a microfibrillated cellulose, wherein the content of the microfibrillated cellulose of said suspension is in the range of 60 to 99.9 weight-% based on total dry solid content, adding an amphoteric polymer to said suspension to provide a mixture of said microfibrillated cellulose and said amphoteric polymer, providing said mixture to a substrate to form a fibrous web, wherein the amount of amphoteric polymer in said mixture is in the range of 0.1 to 20 kg/metric ton based on total dry solid content; and dewatering said fibrous web to form a film having a basis weight of less than 40 g/m2 and a density in the range of from 700 to 1000 kg/m3.

    FLEXIBLE MICROFIBRILLATED FILM FORMATION
    75.
    发明专利
    FLEXIBLE MICROFIBRILLATED FILM FORMATION 未知

    公开(公告)号：ZA201800741B

    公开(公告)日：2018-12-19

    申请号：ZA201800741

    申请日：2018-02-05

    Applicant: STORA ENSO OYJ

    Inventor： HEISKANEN ISTO ,  BACKFOLK KAJ ,  LYYTIKÄINEN KATJA

    Abstract: A method of manufacturing a film comprising microfibrillated cellulose, wherein the method comprises the steps of: providing a first suspension comprising microfibrillated cellulose, having a dry content of from 0.2 to 2.0%, wherein the first suspension has a first Schopper-Riegler (SR) value; forming a first web of said suspension; at least partly dewatering said first web; applying a second suspension comprising microfibrillated cellulose, and/or fines and/or fibers onto a surface of said formed and at least partially dried first web, wherein the second suspension has a second Schopper-Riegler value which is higher than said first Schopper-Riegler value, thereby forming a film.

    A method of producing microfibrillated cellulose
    76.
    发明专利
    A method of producing microfibrillated cellulose 未知

    公开(公告)号：FI127682B

    公开(公告)日：2018-12-14

    申请号：FI20135016

    申请日：2013-01-04

    Applicant: STORA ENSO OYJ

    Inventor： HEISKANEN ISTO ,  KASTINEN HENRI ,  KAUPPI ANNA ,  KANKKUNEN JUKKA ,  AXRUP LARS ,  LAND HENSDAL CECILIA ,  SAXELL HEIDI ,  BACKFOLK KAJ

    IPC: D21D1/20 ,  C08B15/08 ,  D21B1/04 ,  D21C9/00 ,  D21C9/18 ,  D21H11/18 ,  D21H17/00

    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.

    Cartón con resistencia a la compresión mejorada
    78.
    发明专利
    Cartón con resistencia a la compresión mejorada 未知

    公开(公告)号：CL2018002607A1

    公开(公告)日：2018-11-09

    申请号：CL2018002607

    申请日：2018-09-12

    Applicant: STORA ENSO OYJ

    Inventor： HEISKANEN ISTO ,  LAMPAINEN SEPPO ,  KANKKUNEN JUKKA

    IPC: B32B29/08 ,  D21H11/18 ,  D21H17/25 ,  D21H21/16 ,  D21H21/18 ,  D21H27/10 ,  D21H27/38 ,  D21H27/40

    Abstract: UN CARTÓN CORRUGADO QUE COMPRENDE FIBRAS CELULÓSICAS, EN DONDE DICHO CARTÓN CORRUGADO TIENE AL MENOS UN ÍNDICE GEOMÉTRICO DE TENSIÓN EN EL RANGO DE 32 A 65 NM/G, UN ÍNDICE DE RESISTENCIA A LA FRACTURA EN EL RANGO DE 14 A 24 JM/KG Y UN ÍNDICE DE COMPRESIÓN DE ANILLO EN EL RANGO DE 5 A 10 NM/G, MEDIDOS A UNA HUMEDAD RELATIVA DE 85% RH; EN DONDE LAS FIBRAS CELULÓSICAS COMPRENDEN UNA MEZCLA DE FIBRAS MENOS REFINADAS QUE TIENEN UN VALOR SCHOPPER-RIEGLER (SR) EN EL RANGO DE 15 A 28 Y FIBRAS DE CELULOSA MICROFIBRILADA, EN DONDE LA MEZCLA COMPRENDE DICHA CELULOSA MICROFIBRILADA EN UN RANGO DE 1% A 5% EN PESO DEL CONTENIDO SECO DE FIBRAS CELULÓSICAS.

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