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公开(公告)号：CA3058710A1
公开(公告)日：2018-10-08
申请号：CA3058710
申请日：2018-04-11
Applicant: STORA ENSO OYJ
Inventor： LAND HENSDAL CECILIA , SVENSSON ADRIANNA , BERGQVIST LIV , TRAN CARLSTROM AMY , AXRUP LARS
Abstract: The present invention relates to a method for manufacturing at least one layer of a film wherein the method comprises the steps of; providing a first suspension comprising microfibrillated cellulose, providing a second suspension comprising microfibrillated dialdehyde cellulose, mixing the first suspension with the second suspension to form a mixture, applying said mixture to a substrate to form a fibrous web and drying said web to form at least one layer of said film. The present invention further relates to a film comprising said at least one layer.
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公开(公告)号：SE1850252A1
公开(公告)日：2019-09-09
申请号：SE1850252
申请日：2018-03-08
Applicant: STORA ENSO OYJ
Inventor： SVENSSON ADRIANNA , BRANDÉN CARL-MAGNUS , LAND HENSDAL CECILIA , KNÖÖS ISABEL
Abstract: The present invention relates to a method for manufacturing at least one layer of a film wherein the method comprises the steps of:providing a first suspension comprising dialdehyde cellulose fibers with a first degree of oxidation;providing at least a second suspension comprising dialdehyde cellulose fibers with a second degree of oxidation which is lower than said first degree of oxidation;mixing the first suspension with the second suspension to form a mixture;mechanically treating the cellulose fibers in said mixture to microfibrillated dialdehyde cellulose;applying said mixture to a substrate to form a fibrous web; and drying said web to form at least one layer of said film.
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公开(公告)号：SE1751540A1
公开(公告)日：2019-06-14
申请号：SE1751540
申请日：2017-12-13
Applicant: STORA ENSO OYJ
Inventor： SVENSSON ADRIANNA
Abstract: A method for oxidation of cellulose to dialdehyde cellulose (DAC), said method comprising: a) oxidizing cellulose with an aqueous periodate solution having a pH in the range of 3 to 5 to form oxidized cellulose comprising DAC; b) separating the aqueous periodate solution from the oxidized cellulose; c) regenerating the separated aqueous periodate solution by electrolytic oxidation; d) adjusting of the pH of the regenerated aqueous periodate solution to a value in the range of 3 to 5; and e) reusing the pH adjusted regenerated aqueous periodate solution, optionally combined with a make-up amount of fresh aqueous periodate solution, as the aqueous periodate solution in step a).
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公开(公告)号：SE1851019A1
公开(公告)日：2020-02-28
申请号：SE1851019
申请日：2018-08-27
Applicant: STORA ENSO OYJ
Inventor： SVENSSON ADRIANNA , LIIMATAINEN HENRIKKI , SIRVIÖ JUHO , LAKOVAARA MATIAS , HANSSON SUSANNE
Abstract: The present invention relates to methods for hydrophobic modification of nanocellulose films by exposing the film to an ionic liquid, as well as the hydrophobic modified nanocellulose films themselves so as to improve the barrier properties of said films.
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Patent Agency Ranking
公开(公告)号：SE1851018A1
公开(公告)日：2020-02-28
申请号：SE1851018
申请日：2018-08-27
Applicant: STORA ENSO OYJ
Inventor： SVENSSON ADRIANNA , LIIMATAINEN HENRIKKI , SIRVIÖ JUHO , LAKOVAARA MATIAS , HANSSON SUSANNE
Abstract: The present invention relates to a method for treating a film comprising nanocellulose with an aqueous solution comprising tetraalkylammonium hydroxide, such as tetraethylammonium hydroxide and/or tetralkylammonium chloride, such as tetraethylammonium chloride or tetrabuthylammonium chloride to partly dissolve the film and to improve the barrier properties of the film. The invention also relates to a film produced according to the method and to a package comprising said film.
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公开(公告)号：ZA201906442B
公开(公告)日：2020-08-26
申请号：ZA201906442
申请日：2019-09-30
Applicant: STORA ENSO OYJ
Inventor： LAND HENSDAL CECILIA , SVENSSON ADRIANNA , BERGQVIST LIV , TRAN CARLSTRÖM AMY , AXRUP LARS
Abstract: The present invention relates to a method for manufacturing at least one layer of a film wherein the method comprises the steps of; providing a first suspension comprising microfibrillated cellulose, providing a second suspension comprising microfibrillated dialdehyde cellulose, mixing the first suspension with the second suspension to form a mixture, applying said mixture to a substrate to form a fibrous web and drying said web to form at least one layer of said film. The present invention further relates to a film comprising said at least one layer.
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公开(公告)号：SE542443C2
公开(公告)日：2020-05-05
申请号：SE1751540
申请日：2017-12-13
Applicant: STORA ENSO OYJ
Inventor： SVENSSON ADRIANNA
Abstract: The present invention relates to a method for manufacturing at least one layer of a film comprising the steps of providing a suspension comprising(i) a mixture of microfibrillated dialdehyde cellulose (DAC) and microfibrillated cellulose (MFC), or(ii) a microfibrillated mixture of DAC and MFC,applying said suspension to a substrate to form a fibrous web, and drying said web to form at least one layer of said film.
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公开(公告)号：SE541631C2
公开(公告)日：2019-11-19
申请号：SE1850252
申请日：2018-03-08
Applicant: STORA ENSO OYJ
Inventor： SVENSSON ADRIANNA , BRANDÉN CARL-MAGNUS , LAND HENSDAL CECILIA , KNÖÖS ISABEL
Abstract: The present invention relates to a method for manufacturing at least one layer of a film wherein the method comprises the steps of:providing a first suspension comprising dialdehyde cellulose fibers with a first degree of oxidation;providing at least a second suspension comprising dialdehyde cellulose fibers with a second degree of oxidation which is lower than said first degree of oxidation;mixing the first suspension with the second suspension to form a mixture;mechanically treating the cellulose fibers in said mixture to microfibrillated dialdehyde cellulose;applying said mixture to a substrate to form a fibrous web; and drying said web to form at least one layer of said film.
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公开(公告)号：SE540870C2
公开(公告)日：2018-12-11
申请号：SE1750437
申请日：2017-04-12
Applicant: STORA ENSO OYJ
Inventor： SVENSSON ADRIANNA , TRAN CARLSTRÖM AMY , LAND HENSDAL CECILIA , AXRUP LARS , BERGQVIST LIV
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