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公开(公告)号：US20250059712A1
公开(公告)日：2025-02-20
申请号：US18717641
申请日：2022-12-12
Applicant: Stora Enso OYJ
Inventor： Kaj Backfolk , Isto Heiskanen , Anders Moberg , Katja Lyytikäinen , Cecilia Land Hensdal , Anna Kauppi
Abstract: The present invention relates to a strength enhancement agent for paper and paperboard, said strength enhancement agent comprising a fines-depleted highly refined cellulose pulp (FD-HIRC), wherein said FD-HIRC has a Schopper-Riegler (SR) number in the range of 60-100 as determined by standard ISO 5267-1, and wherein said FD-HRC has an amount of long (>0.2 mm) fibers of at least 8 million fibers per gram (based on dry weight), and wherein said FD-HRC has a Fines A value below 46, wherein the Fines A value is determined using an FS5 optical fiber analyzer. The present invention relates to a method for manufacturing said strength enhancement agent.
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公开(公告)号：US12084563B2
公开(公告)日：2024-09-10
申请号：US17597317
申请日：2020-06-30
Applicant: Stora Enso OYJ
Inventor： Ulla Jansson , Anders Moberg , Kaj Backfolk
CPC classification number: C08L1/02 , D21C9/007 , D21H11/02 , D21H11/18 , D21H21/18 , D21H21/52 , D21H27/30
Abstract: The present invention relates to a refined cellulose fiber composition useful as a strength enhancing agent for paper and paperboard, wherein the refined cellulose fiber composition has a Schopper-Riegler (SR) number in the range of 80-98 as determined by standard ISO 5267-1, and wherein the refined cellulose fiber composition has a content of fibers having a length >0.2 mm of at least 12 million fibers per gram based on dry weight. The invention further relates to a method for preparing the refined cellulose fiber composition and to pulp paper and paperboard comprising the refined cellulose fiber composition.
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公开(公告)号：US20240229358A9
公开(公告)日：2024-07-11
申请号：US18548368
申请日：2022-03-08
Applicant: Stora Enso OYJ
Inventor： Isto Heiskanen , Kaj Backfolk , Katja Lyytikäinen , Anders Moberg , Jukka Kankkunen
Abstract: The present invention relates to a method for manufacturing a barrier film comprising highly refined cellulose, said method comprising: a) providing a highly refined cellulose pulp suspension comprising highly refined cellulose pulp having a Schopper-Riegler (SR) number in the range of 40-98 as determined by standard ISO 5267-1 and a content of fibers having a length >0.2 mm of at least 7 million fibers per gram based on dry weight, at a consistency in the range of 0.1-1.5 wt %; b) forming a web of the highly refined cellulose pulp suspension and dewatering the web in a paper machine former on a wire to a consistency of at least 5 wt % to obtain a substrate web, wherein the white water removed from the pulp contains 2-25 wt %, preferably 5-20 wt % and more preferably at least 5-15 wt % of the solids of the highly refined cellulose pulp suspension provided in step a); c) optionally further dewatering and optionally drying the substrate web; d) coating the optionally further dewatered and optionally dried substrate web with a coating suspension comprising cellulose fines or microfibrillated cellulose to obtain a coated web; and e) dewatering and/or drying the coated web to obtain a barrier film comprising highly refined cellulose.
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Patent Agency Ranking
公开(公告)号：US20250059710A1
公开(公告)日：2025-02-20
申请号：US18717642
申请日：2022-12-12
Applicant: Stora Enso OYJ
Inventor： Isto Heiskanen , Kaj Backfolk , Anna Kauppi , Katja Lyytikäinen , Cecilia Land Hensdal , Anders Moberg
Abstract: The present invention relates to a cellulose-based gas barrier film, said cellulose-based gas barrier film comprising at least 50 wt % of a fines-depleted highly refined cellulose pulp (FD-HRC), wherein said FD-HRC has a Schopper-Riegler (SR) number in the range of 80-100 as determined by standard ISO 5267-1, wherein said FD-HIRC has an amount of long (>0.2 mm) fibers of at least 8 million fibers per gram (based on dry weight), and wherein said FD-HRC has a Fines A value below 46%, wherein the Fines A value is determined using an FS5 optical fiber analyzer. The present invention relates to a method for manufacturing said cellulose-based gas barrier film.
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公开(公告)号：US20220290377A1
公开(公告)日：2022-09-15
申请号：US17754157
申请日：2020-09-25
Applicant: Stora Enso OYJ
Inventor： Henna Paakkonen Alvim , Kaj Backfolk , Anders Moberg
Abstract: The invention discloses a container for the packaging of compositions comprising water water-in-oil (W/O) emulsions and/or oil-in-water (O/W) emulsions, which container comprises a tube-formed body made from a paperboard comprising a fiber based substrate comprising a first ply forming a back ply, a second ply forming a top ply and a third ply forming at least one middle ply, wherein the fiber based substrate comprises CTMP. The compositions comprising W/O or O/W emulsions may be semi-solid compositions. The invention solves the problem of delamination of the multi-ply board connected to prior art solutions. In addition, the container provides the specific barriers needed to pack compositions comprising W/O- or O/W-emulsions. It further provides the required flexibility yet rigidity to be used in such tube-formed containers.
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公开(公告)号：US20240133118A1
公开(公告)日：2024-04-25
申请号：US18548368
申请日：2022-03-08
Applicant: Stora Enso OYJ
Inventor： Isto Heiskanen , Kaj Backfolk , Katja Lyytikäinen , Anders Moberg , Jukka Kankkunen
Abstract: The present invention relates to a method for manufacturing a barrier film comprising highly refined cellulose, said method comprising: a) providing a highly refined cellulose pulp suspension comprising highly refined cellulose pulp having a Schopper-Riegler (SR) number in the range of 40-98 as determined by standard ISO 5267-1 and a content of fibers having a length >0.2 mm of at least 7 million fibers per gram based on dry weight, at a consistency in the range of 0.1-1.5 wt %; b) forming a web of the highly refined cellulose pulp suspension and dewatering the web in a paper machine former on a wire to a consistency of at least 5 wt % to obtain a substrate web, wherein the white water removed from the pulp contains 2-25 wt %, preferably 5-20 wt % and more preferably at least 5-15 wt % of the solids of the highly refined cellulose pulp suspension provided in step a); c) optionally further dewatering and optionally drying the substrate web; d) coating the optionally further dewatered and optionally dried substrate web with a coating suspension comprising cellulose fines or microfibrillated cellulose to obtain a coated web; and e) dewatering and/or drying the coated web to obtain a barrier film comprising highly refined cellulose.
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公开(公告)号：US20220363871A1
公开(公告)日：2022-11-17
申请号：US17597317
申请日：2020-06-30
Applicant: Stora Enso OYJ
Inventor： Ulla Jansson , Anders Moberg , Kaj Backfolk
Abstract: The present invention relates to a refined cellulose fiber composition useful as a strength enhancing agent for paper and paperboard, wherein the refined cellulose fiber composition has a Schopper-Riegler (SR) number in the range of 80-98 as determined by standard ISO 5267-1, and wherein the refined cellulose fiber composition has a content of fibers having a length >0.2 mm of at least 12 million fibers per gram based on dry weight. The invention further relates to a method for preparing the refined cellulose fiber composition and to pulp paper and paperboard comprising the refined cellulose fiber composition.
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公开(公告)号：US10145068B2
公开(公告)日：2018-12-04
申请号：US15307485
申请日：2015-04-29
Applicant: Stora Enso OYJ
Inventor： Hallgren Hans , Frank Peng , Anders Moberg , Hans Höglund , Gunilla Pettersson , Sven Norgren
Abstract: The present invention relates to a process for producing at least one ply of a paper or board product wherein a web comprising mechanical and/or chemimechanical pulp and at least one dry strength additive is dried in a press drying process by subjecting the web to heat and an overpressure of above 40 kPa. The present invention also relates to a paper product, a paperboard product and a ply produced according to the process.
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