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    MULTIPLY CONTAINERBOARD FOR USE IN CORRUGATED BOARD
    3.
    发明专利
    MULTIPLY CONTAINERBOARD FOR USE IN CORRUGATED BOARD 未知

    公开(公告)号：SE2150622A1

    公开(公告)日：2022-11-18

    申请号：SE2150622

    申请日：2021-05-17

    Applicant: STORA ENSO OYJ

    Inventor： HEISKANEN ISTO ,  KANKKUNEN JUKKA

    IPC: D21H27/38 ,  B32B29/00 ,  B32B29/08 ,  D21H11/06 ,  D21H11/10

    Abstract: The present invention relates to a multiply containerboard for use in corrugated board, said multiply containerboard comprising: a first outer ply, a second outer ply, and at least one intermediate ply sandwiched between the first and second outer ply, wherein said first and second outer ply comprise at least 70 wt% neutral sulfite semi chemical (NSSC) pulp based on dry weight, and wherein said intermediate ply comprises at least 30 wt% unbleached kraft pulp based on dry weight and at least one cellulose based strength enhancement agent, and wherein said intermediate ply comprises less than 30 wt% NSSC pulp based on dry weight.

    A method for producing a multilayer machine glazed paper comprising highly refined cellulose fibers and a multilayer machine glazed paper produced
    4.
    发明专利
    A method for producing a multilayer machine glazed paper comprising highly refined cellulose fibers and a multilayer machine glazed paper produced 未知

    公开(公告)号：SE2051027A1

    公开(公告)日：2022-03-02

    申请号：SE2051027

    申请日：2020-09-01

    Applicant: STORA ENSO OYJ

    Inventor： KAUPPI ANNA ,  HEISKANEN ISTO ,  KORVENNIEMI JUHA ,  KANKKUNEN JUKKA ,  BACKFOLK KAJ

    IPC: D21H25/04 ,  B32B29/00 ,  D21H11/18 ,  D21H27/30

    Abstract: The present invention relates to a method for manufacturing a multilayer machine glazed paper comprising highly refined cellulose fibers, the method comprising the steps of: forming a first wet web by applying at least one first pulp suspension comprising highly refined cellulose fibers on a first wire; partially dewatering the first wet web to obtain a first partially dewatered web; forming a second wet web by applying at least one second pulp suspension comprising highly refined cellulose fibers on a second wire; partially dewatering the second wet web to obtain a second partially dewatered web; joining the first and second partially dewatered web to obtain a multilayer web; optional dewatering the multilayer web in a dewatering unit, and glazing the multilayer web in at least one glazing unit to obtain a multilayer machine glazed paper comprising highly refined cellulose fibers. The invention also relates to a multiply MG paper produced according to the method.

    A method of producing microfibrillated cellulose
    6.
    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
    7.
    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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