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    A method for producing a multilayer machine glazed paper comprising highly refined cellulose fibers and a multilayer machine glazed paper produced
    11.
    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.

    Método de produção de celulose microfibrilada
    12.
    发明专利
    Método de produção de celulose microfibrilada 未知

    公开(公告)号：BR112015016087B1

    公开(公告)日：2021-09-14

    申请号：BR112015016087

    申请日：2013-12-30

    Applicant: STORA ENSO OYJ

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

    IPC: C08B15/08 ,  C08L1/04 ,  D21D1/20 ,  D21D1/30 ,  D21H11/18

    Abstract: método de produção de celulose microfibrilada. a presente invenção está correlacionada a métodos de produção de celulose microfibrilada (mfc). de acordo com a invenção uma suspensão de polpa fibrosa é mecanicamente fibrilada, com uma consistência de 12,5%, desidratada, para elevar a consistência da suspensão fibrilada para pelo menos 12,5%, e depois submetida na condição desidratada a uma adicional fibrilação. alternativamente, uma suspensão de polpa fibrosa inicialmente fibrilada pode ser desidratada e fibrilada na condição desidratada, após o que essas etapas de desidratação e fibrilação são repetidas uma ou mais vezes, de modo que a consistência da polpa é aumentada em cada etapa de fibrilação. os objetivos de elevar a consistência entre subsequentes etapas de fibrilação estão correlacionados à economia de energia e um aumento de alongamento na mfc. a invenção compreende ainda o uso de produtos de mfc, por exemplo, como um aditivo para fornecimento para fabricação de papel ou aditivo para materiais compósitos de plástico moldado por injeção.

    A method of producing microfibrillated cellulose
    13.
    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.

    MULTILAYER BARRIER FILM
    19.
    发明专利
    MULTILAYER BARRIER FILM 未知

    公开(公告)号：SE547131C2

    公开(公告)日：2025-04-29

    申请号：SE2230362

    申请日：2022-11-11

    Applicant: STORA ENSO OYJ

    Inventor： KAUPPI ANNA ,  HEISKANEN ISTO ,  BACKFOLK KAJ

    IPC: C08J5/18 ,  B32B27/10 ,  B32B29/00 ,  D21H11/18 ,  D21H27/38

    Abstract: The present invention relates to a multilayer barrier film for a paper or paperboard packaging material, said barrier film comprises a first layer comprising a furnish comprising at least 70 wt-% of highly refined cellulose based on the total fiber content of the first layer, a second layer comprising a furnish comprising cellulosic fibers and less than 50 wt-% of highly refined cellulose based on the total fiber content of the second layer wherein the multilayer barrier film has an air permeance above 1000 pm/Pas and a tear index GM above 4.5. The present invention further relates to a paper and paperboard based packaging material comprising such multilayer barrier film and to methods for manufacturing such multilayer barrier film.

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