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公开(公告)号：SE2230363A1
公开(公告)日：2024-05-12
申请号：SE2230363
申请日：2022-11-11
Applicant: STORA ENSO OYJ
Inventor： KAUPPI ANNA , HEISKANEN ISTO , KORVENNIEMI JUHA , BACKFOLK KAJ
Abstract: The present invention relates to a barrier film for a paper or paperboard-based packaging material, said barrier film comprising cellulosic fibers and highly refined cellulose wherein the barrier film comprises less than 50 wt-% of highly refined cellulose based on the total fiber content and the barrier film having an air permeance above 2000 pm/Pas and a geometric mean tensile index above 70 Nm/g. The invention also relates to a paper or paperboard-based packaging material comprising the barrier film and a method for producing said film.
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公开(公告)号：SE545733C2
公开(公告)日：2023-12-27
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
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.
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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
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.
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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
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.
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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
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.
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Patent Agency Ranking
公开(公告)号：SE545614C2
公开(公告)日：2023-11-14
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
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.
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公开(公告)号：CA3187887A1
公开(公告)日：2022-03-10
申请号：CA3187887
申请日：2021-08-31
Applicant: STORA ENSO OYJ
Inventor： HEISKANEN ISTO , BACKFOLK KAJ , KAUPPI ANNA , KORVENNIEMI JUHA , KANKKUNEN JUKKA
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.
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公开(公告)号：SE2051031A1
公开(公告)日：2022-03-02
申请号：SE2051031
申请日：2020-09-01
Applicant: STORA ENSO OYJ
Inventor： KAUPPI ANNA , HEISKANEN ISTO , KORVENNIEMI JUHA , KANKKUNEN JUKKA , BACKFOLK KAJ , HJERPE MIKAEL
IPC: D21H11/18 , B32B27/10 , B32B29/00 , B65D65/40 , C08J5/18 , D21F1/02 , D21F1/08 , D21F1/20 , D21H27/30
Abstract: The present invention relates to a method for manufacturing a film comprising highly refined cellulose fibers in a paper-making machine, the method comprising the steps of: a) providing an aqueous pulp suspension comprising at least 20% by dry weight of highly refined cellulose fibers having an SR (Schopper-Riegler) value in the range of 80-100 at a consistency in the range of 0.8-3 wt% and; b) deflocculating and diluting the aqueous pulp suspension to a lower consistency in the range of 0.1-1.5 wt% by injecting the aqueous pulp suspension into an aqueous stream using a high shear mixer to obtain a diluted aqueous pulp suspension; and c) feeding the diluted aqueous pulp suspension to a headbox of the paper-making machine.
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公开(公告)号：SE2050770A1
公开(公告)日：2021-12-27
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
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.
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公开(公告)号：SE547023C2
公开(公告)日：2025-04-01
申请号：SE2230361
申请日：2022-11-11
Applicant: STORA ENSO OYJ
Inventor： KAUPPI ANNA , HEISKANEN ISTO , KORVENNIEMI JUHA , BACKFOLK KAJ
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 and more than 10 wt-% of filler, wherein the multilayer barrier film has 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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