公开(公告)号：PL3449056T3

公开(公告)日：2022-04-04

申请号：PL17788916

申请日：2017-04-26

Applicant: STORA ENSO OYJ

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

IPC: D21H19/10

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.

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.

公开(公告)号：SE542946C2

公开(公告)日：2020-09-22

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：SE1851394A1

公开(公告)日：2020-05-10

申请号：SE1851394

申请日：2018-11-09

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN ISTO ,  KANKKUNEN JUKKA ,  PIHKO RIKU ,  KUNNARI VESA

IPC: D21F9/00 ,  C08B15/02 ,  C08L1/04 ,  D21F3/02 ,  D21F11/00 ,  D21H11/18

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 weight-% to 100 weight-% 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 substrate, through a pressing equipment. The invention further relates to a film produced from said method.

公开(公告)号：SE544926C2

公开(公告)日：2023-01-10

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.

公开(公告)号：SE544893C2

公开(公告)日：2022-12-20

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.

公开(公告)号：SE2051536A1

公开(公告)日：2022-06-23

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：SE544320C2

公开(公告)日：2022-04-05

申请号：SE1851394

申请日：2018-11-09

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN ISTO ,  KANKKUNEN JUKKA ,  PIHKO RIKU ,  KUNNARI VESA

IPC: D21F9/00 ,  C08B15/02 ,  C08L1/04 ,  D21F3/02 ,  D21F11/00 ,  D21H11/18

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 weight-% to 100 weight-% 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 substrate, through a pressing equipment. The invention further relates to a film produced from said method.

公开(公告)号：SE2051028A1

公开(公告)日：2022-03-02

申请号：SE2051028

申请日：2020-09-01

Applicant: STORA ENSO OYJ

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

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

Abstract: The present invention relates to a method for producing a machine glazed paper comprising microfibrillated cellulose, wherein the method comprises the steps of: providing a suspension comprising between 0.1 wt-% to 50 wt-% of microfibrillated cellulose based on total dry weight, forming a fibrous web of said suspension on a wire wherein said web has a dry content of 1-25% by weight, dewatering the fibrous web in at least one dewatering unit, glazing at least one side of the dewatered fibrous web in a glazing unit to form the machine glazed paper. The invention further relates to a MG paper produced according to the method.