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    Película que comprende celulosa microfibrilada y productos fabricados a partir de la misma
    41.
    发明专利
    Película que comprende celulosa microfibrilada y productos fabricados a partir de la misma 未知

    公开(公告)号：ES2905449T3

    公开(公告)日：2022-04-08

    申请号：ES17788916

    申请日：2017-04-26

    Applicant: STORA ENSO OYJ

    Inventor： BACKFOLK KAJ ,  HEISKANEN ISTO ,  SAUKKONEN ESA ,  KANKKUNEN JUKKA

    IPC: D21H19/10

    Abstract: Una película termosellable que es compostable de acuerdo con la norma ISO 18606, que comprende una película base que tiene un gramaje de 5-50 gsm y un grosor de 10-100 μm, que ha sido recubierta en al menos un lado con un recubrimiento en forma de barniz al agua, resina o una cera que mejora las propiedades de barrera contra gases y/o humedad, en donde la película base comprende un material de fibra y al menos el 60 % en peso de dicho material de fibra es celulosa microfibrilada con al menos una dimensión inferior a 100 nm, y el grosor del recubrimiento es de 0,05 a 20 μm, por lado de la película base.

    Foam coated cellulose based substrate
    43.
    发明专利
    Foam coated cellulose based substrate 未知

    公开(公告)号：SE2050594A1

    公开(公告)日：2021-11-21

    申请号：SE2050594

    申请日：2020-05-20

    Applicant: STORA ENSO OYJ

    Inventor： HEISKANEN ISTO ,  BACKFOLK KAJ ,  LYYTIKÄINEN KATJA

    IPC: D21H21/56 ,  D21H11/18 ,  D21H17/20 ,  D21H19/00

    Abstract: The present invention relates to a method for manufacturing a polymer coated cellulose based substrate useful as a barrier film, said method comprising the steps of: a) providing a cellulose based substrate comprising 50-99 wt% highly refined cellulose fibers based on the total dry weight of the cellulose based substrate; b) preparing an aqueous foam from an aqueous solution of a foam forming polymer; c) applying the aqueous foam to at least one surface of the cellulose based substrate; and d) collapsing the aqueous foam to form a polymer coating on the cellulose based substrate.

    Multilayer film comprising highly refined cellulose fibers
    45.
    发明专利
    Multilayer film comprising highly refined cellulose fibers 未知

    公开(公告)号：SE2050425A1

    公开(公告)日：2021-10-16

    申请号：SE2050425

    申请日：2020-04-15

    Applicant: STORA ENSO OYJ

    Inventor： KAUPPI ANNA ,  HEISKANEN ISTO ,  KANKKUNEN JUKKA ,  BACKFOLK KAJ ,  LYYTIKÄINEN KATJA

    IPC: C08J5/18 ,  B32B29/02 ,  B82Y30/00 ,  C08L1/02 ,  D21F1/00 ,  D21F11/04 ,  D21H11/18 ,  D21H21/56 ,  D21H27/30

    Abstract: The present invention relates to a method for manufacturing a multilayer film comprising highly refined cellulose fibers, the method comprising the steps of: a) forming a first wet web by applying a first pulp suspension comprising highly refined cellulose fibers on a first wire;b) partially dewatering the first wet web to obtain a first partially dewatered web; c) forming a second wet web by applying a foamed second pulp suspension comprising highly refined cellulose fibers and a foaming agent on a second wire; d) partially dewatering the foamed second wet web to obtain a second partially dewatered web;e) joining the first and second partially dewatered web to obtain a multilayer web; andf) further dewatering, and optionally drying, the multilayer web to obtain a multilayer film comprising highly refined cellulose fibers.

    Multilayer film comprising highly refined cellulose fibers
    46.
    发明专利
    Multilayer film comprising highly refined cellulose fibers 未知

    公开(公告)号：SE2050423A1

    公开(公告)日：2021-10-16

    申请号：SE2050423

    申请日：2020-04-15

    Applicant: STORA ENSO OYJ

    Inventor： HEISKANEN ISTO ,  KANKKUNEN JUKKA ,  BACKFOLK KAJ ,  LYYTIKÄINEN KATJA

    IPC: C08J5/18 ,  B32B29/02 ,  B82Y30/00 ,  C08L1/02 ,  C09J101/02 ,  C09J197/00 ,  D21F1/00 ,  D21F11/04 ,  D21H11/18 ,  D21H27/30

    Abstract: The present invention relates to a method for manufacturing a multilayer film comprising highly refined cellulose fibers, the method comprising the steps of: a) forming a first wet web by applying a first pulp suspension comprising highly refined cellulose fibers on a first wire;b) partially dewatering the first wet web to obtain a first partially dewatered web; c) forming a second wet web by applying a second pulp suspension comprising highly refined cellulose fibers on a second wire;d) partially dewatering the second wet web to obtain a second partially dewatered web;e) applying a binder between the first and second partially dewatered web and joining the first and second partially dewatered web to obtain a multilayer web; and f) further dewatering, and optionally drying, the multilayer web to obtain a multilayer film comprising highly refined cellulose fibers.

    Method of producing a cellulose fiber structure and a fiber structure
    49.
    发明专利
    Method of producing a cellulose fiber structure and a fiber structure 未知

    公开(公告)号：SE1950981A1

    公开(公告)日：2021-03-01

    申请号：SE1950981

    申请日：2019-08-29

    Applicant: STORA ENSO OYJ

    Inventor： PENG FRANK ,  BACKFOLK KAJ ,  KAZEMAHVAZI SOHRAB

    IPC: D21J7/00 ,  B65D65/38 ,  D21H11/18 ,  D21H17/66 ,  D21J3/00

    Abstract: The invention discloses a method for producing a three dimensional molded structure from cellulose fibers, comprising the steps of:-providing an aqueous composition comprising cellulose pulp and at least one metal salt in a substantially homogeneous mixture, wherein said mixture has a solid content between 0.05-10wt%;-providing a forming tool having a three dimensional shape comprising a forming portion, and bringing said forming portion into contact with the aqueous composition so that said forming portion is covered with a wet layer of pulp;-dewatering the layer of pulp contacted by the forming tool at temperatures > 100°C to a dry content of at least 70wt% to achieve the three dimensional molded structure.

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