公开(公告)号：SE544193C2

公开(公告)日：2022-02-22

申请号：SE2050770

申请日：2020-06-26

Applicant: STORA ENSO OYJ

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

IPC: D21H11/18 ,  B82Y30/00 ,  C08J5/18 ,  D21F3/02

Abstract: The present invention relates to a method for dewatering a web comprising microfibrillated cellulose, wherein the method comprises the steps of: providing a suspension comprising between 50 wt-% to 100 wt-% of microfibrillated cellulose based on total dry weight, forming a fibrous web of said suspension on a support wherein said web has a dry content of 1-25% by weight, applying a dewatering felt into direct contact with the fibrous web, conducting said fibrous web, arranged between said dewatering felt and said support, through at least one shoe press, drying the dewatered web to form a film which film has an Oxygen Transmission Rate (OTR) value (23°C, 50% RH) below 100 cc/m2/24h according to ASTM D-3985.

公开(公告)号：SE1851474A1

公开(公告)日：2020-05-29

申请号：SE1851474

申请日：2018-11-28

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN ISTO ,  KANKKUNEN JUKKA ,  BACKFOLK KAJ

IPC: C08J5/18 ,  B29D7/01 ,  B32B27/10 ,  C08L1/02 ,  C09D5/00 ,  D21H11/18

Abstract: The present invention is directed to a process for manufacturing a film or coating comprising high amounts of cellulosic nanomaterial. According to the present invention, a screen printing press, such as a rotary screen press, is used to create a film or coating comprising cellulosic nanomaterial. One benefit of the present process is that the suspension used in the printing process has a high dry content and high viscosity, thereby facilitating the process for manufacturing a film or coating comprising high amounts of cellulosic nanomaterial.

公开(公告)号：CA3096317A1

公开(公告)日：2019-10-17

申请号：CA3096317

申请日：2019-04-12

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN ISTO ,  BACKFOLK KAJ ,  KANKKUNEN JUKKA ,  VEITOLA ANTTI

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

Abstract: The present invention relates to a method for the production of a coated paper, paperboard or film, wherein the method comprises the steps of; providing a first suspension comprising cellulose fibers and/or nanocellulose, 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 polymers and/or particles wherein the second suspension has a Brookfield viscosity above 3000m Pas at a dry content between 4%-40% by weight, providing at least one calender comprising at least one roll or belt, applying the second suspension to the surface of the at least one calender roll or belt forming a coating web and conducting said fibrous web through the at least one calender whereby the coating web is applied to the first side of the web forming the coated paper, paperboard or film. The invention also relates to a paper, paperboard or film produced according to the method.

公开(公告)号：CA3081813A1

公开(公告)日：2019-06-27

申请号：CA3081813

申请日：2018-12-19

Applicant: STORA ENSO OYJ

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

IPC: B32B27/12 ,  B29C65/02 ,  B32B27/08 ,  B32B27/32 ,  C08J5/18 ,  D21H11/18

Abstract: The present invention is directed to a packaging material free from aluminium in the form of a continuous foil or film, comprising a layer of microfibrillated cellulose (MFC), wherein the layer comprising MFC has been laminated or coated on at least one side with a heat-sealable material. The MFC layer contains at least 60% by weight of microfibrillated cellulose. The present invention is also directed to a method for induction sealing, wherein a packaging material to be heat-sealed by induction is placed against an induction heating surface.

公开(公告)号：SE1751595A1

公开(公告)日：2019-06-22

申请号：SE1751595

申请日：2017-12-21

Applicant: STORA ENSO OYJ

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

IPC: B32B27/08 ,  B29C65/02 ,  B32B27/12 ,  B32B27/32 ,  C08J5/18 ,  D21H11/18

Abstract: The present invention is directed to a packaging material free from aluminium in the form of a continuous foil or film, comprising a layer of microfibrillated cellulose (MFC), wherein the layer comprising MFC has been laminated or coated on at least one side with a heat-sealable material. The MFC layer contains at least 60% by weight of microfibrillated cellulose. The present invention is also directed to a method for induction sealing, wherein a packaging material to be heat-sealed by induction is placed against an induction heating surface.

公开(公告)号：SE545776C2

公开(公告)日：2024-01-09

申请号：SE2051536

申请日：2020-12-22

Applicant: STORA ENSO OYJ

Inventor： NYBERG ZETTERLUND ANNA ,  HEISKANEN ISTO ,  KANKKUNEN JUKKA ,  BACKFOLK KAJ

IPC: D21H11/18 ,  B32B7/12 ,  B32B9/06 ,  B32B27/10 ,  B32B37/12 ,  C08J5/18 ,  C09J5/04 ,  C09J123/04 ,  C09J125/04 ,  C09J127/06 ,  C09J131/04 ,  C09J133/08 ,  D21H27/30 ,  D21H27/32 ,  D21H27/34

Abstract: The present invention relates to packaging materials in the form of laminates comprising a paper or paperboard substrate and a barrier film. The barrier film is based on microfibrillated cellulose. The laminate comprises a paper or paperboard substrate, wherein the substrate is in contact with a first adhesive layer, which is in contact with a second adhesive layer, which is in contact with the barrier film. The present invention also relates to methods for manufacturing such laminates.

公开(公告)号：SE544690C2

公开(公告)日：2022-10-18

申请号：SE2050523

申请日：2020-05-07

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN ISTO ,  KANKKUNEN JUKKA ,  BACKFOLK KAJ

IPC: D21H19/08 ,  B05D3/00 ,  B32B15/12 ,  B32B15/20 ,  B32B27/10 ,  B32B29/06 ,  B82Y30/00 ,  C08J5/18 ,  C08L1/02 ,  C23C14/02 ,  C23C14/14 ,  C23C16/02 ,  C23C16/16 ,  D21H11/18 ,  D21H19/16 ,  D21H19/82

Abstract: The present invention is directed to a process for manufacturing a nanocoated pulp-based substrate comprising the steps of:a) providing a suspension comprising pulp, said pulp having Schopper Riegler value of at least 70°;b) using the suspension of step a) to form a wet web;c) dewatering and/or drying the wet web to form a substrate;d) adding a first layer of an acrylic monomer solution comprising less than 2 wt-% water to the surface of the substrate, followed by radiation curing the first layer;e) optionally adding a second layer comprising an acrylic monomer solution to the surface of the cured first layer and radiation curing the second layer;f) providing a nano-coating on the surface of the cured first or second layer such that a nano-coating having a thickness in the range of from 0.1 nm to 100 nm is provided on the substrate.

公开(公告)号：SE544670C2

公开(公告)日：2022-10-11

申请号：SE2050424

申请日：2020-04-15

Applicant: STORA ENSO OYJ

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

IPC: C08J5/18 ,  B32B29/02 ,  B82Y30/00 ,  C08L1/02 ,  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) 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.

公开(公告)号：CA3190646A1

公开(公告)日：2022-03-10

申请号：CA3190646

申请日：2021-08-31

Applicant: STORA ENSO OYJ

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

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.

公开(公告)号：SE2051029A1

公开(公告)日：2022-03-02

申请号：SE2051029

申请日：2020-09-01

Applicant: STORA ENSO OYJ

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

IPC: D21H11/18 ,  B32B29/02 ,  D21F11/08 ,  D21H27/30

Abstract: The present invention relates to a method for manufacturing a multilayer film comprising microfibrillated cellulose (MFC) in a paper-making machine, the method comprising the steps of:a) forming a bottom web layer by applying a first pulp suspension comprising at least 50% by dry weight of cellulose based fibrous material having an SR (Schopper-Riegler) value in the range of 18-75 on a bottom web wire;b) forming or applying an intermediate web layer formed from a second pulp suspension comprising at least 50% by dry weight of MFC having an SR value in the range of 80-100 on the bottom web layer;c) applying a top web layer formed from a third pulp suspension comprising at least 50% by dry weight of cellulose based fibrous material having an SR (Schopper-Riegler) value in the range of 18-75 on the intermediate web layer to form a multilayer web; andd) dewatering, and optionally drying, the formed multilayer web to obtain a multilayer film comprising MFC.