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公开(公告)号：US20230009598A1
公开(公告)日：2023-01-12
申请号：US17756984
申请日：2020-12-18
Applicant: Stora Enso OYJ
Inventor： Otto Nylén , Kaj Backfolk
IPC: D21F7/06 , D21G9/00 , D21H11/18 , D21F2/00 , D21F5/00 , G06T7/00 , G06T7/60 , G06T7/70 , G01N21/86 , G01N21/89
Abstract: A method of identifying a defect in a wet film comprises conveying said wet film (20), in a wet state, on a conveyor (10), providing a laser projection (1511) onto the wet film, acquiring a series of images, each depicting an area of the wet film, wherein at least a portion of the laser projection is visible, and using at least some of said images to identify said defect. There is also disclosed a method and device for producing a film.
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公开(公告)号：US20220372708A1
公开(公告)日：2022-11-24
申请号：US17755339
申请日：2020-11-04
Applicant: Stora Enso OYJ
Inventor： Kaj Backfolk , Chris Bonnerup , Isto Heiskanen , Katja Lyytikäinen
Abstract: A method for reducing the surface oil absorption of cellulose based substrate is provided, in which a coating composition is applied to said substrate; and in which the coating composition comprises carboxymethyl cellulose (CMC) and/or a salt of carboxymethyl cellulose (CMC). A coated paperboard, and a laminate of the coated paperboard with a polymer layer is also provided. The coating composition provides improved surface oil absorption and improved adherence of an overlying polymer layer.
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公开(公告)号：US20220372250A1
公开(公告)日：2022-11-24
申请号：US17755340
申请日：2020-11-04
Applicant: Stora Enso OYJ
Inventor： Kaj Backfolk , Katja Lyytikäinen , Isto Heiskanen , Otto Nylén
Abstract: A cellulosic film comprising MFC is provided, which is coated on at least one surface thereof with at least one cured barrier layer. The cured barrier layer comprises CMC which has been crosslinked with a crosslinking agent. A method for improving the barrier properties of a cellulosic film is also provided.
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公开(公告)号：US11486095B2
公开(公告)日：2022-11-01
申请号：US16958249
申请日：2018-12-20
Applicant: Stora Enso OYJ
Inventor： Åsa Nyflött , Chris Bonnerup , Magnus Ekberg , Kaj Backfolk
Abstract: The present invention discloses a paperboard for packaging of liquid and frozen food, comprising a dispersion coating as the only barrier layer on its outside/print side. It has surprisingly been found that a dispersion coating comprising latex and pigment applied on the outside/print side of a paperboard for liquid and/or frozen food may serve as the only barrier against moisture arising from condensation.
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75.发明授权公开(公告)号：US11479915B2
公开(公告)日：2022-10-25
申请号：US16316864
申请日：2017-07-03
Applicant: Stora Enso OYJ
Inventor： Kaj Backfolk , Isto Heiskanen , Esa Saukkonen , Katja Lyytikäinen , Heidi Saxell
Abstract: The present invention relates to a method for manufacturing an intermediate product that can be stored and transported and efficiently converted into microfibrillated cellulose with limited energy input at the time of conversion. More specifically, the invention involves the use of dewatered carboxymethylcellulose or carboxylated cellulose fiber having a low degree of substitution and a high amount of additives.
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Patent Agency Ranking
公开(公告)号：US11459432B2
公开(公告)日：2022-10-04
申请号：US16461897
申请日：2017-11-16
Applicant: Stora Enso OYJ
Inventor： Isto Heiskanen , Kaj Backfolk , Esa Saukkonen , Ville Ribu , Katja Lyytikäinen
IPC: C08J5/18 , D21H11/18 , D21H25/04 , D21H19/34 , D21H13/00 , D21H21/18 , D21H19/52 , D21H21/16 , D21H17/28
Abstract: Method for making a film that comprises microfibrillated cellulose, wherein the film has low OTR values and especially suitable for a tropical environment. The method comprising the steps of providing a suspension comprising microfibrillated cellulose (MFC), forming a film from said suspension, wherein the film having a solid content above 40%, preferably above 50%, treating the film with flame or plasma treatment, such that a surface activation takes place on the film, and cooling the film, wherein the surface of the film having a decreased OTR value and a high moisture resistance.
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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：US11326306B2
公开(公告)日：2022-05-10
申请号：US16955470
申请日：2018-12-17
Applicant: Stora Enso OYJ
Inventor： Kaj Backfolk , Isto Heiskanen , Esa Saukkonen , Katja Lyytikäinen
IPC: D21H11/18 , B32B27/10 , B32B27/32 , D21F1/00 , D21H17/32 , D21H17/42 , D21H17/45 , D21H21/08 , D21H23/04
Abstract: A method for the production of a fibrous product from a fibrous web, wherein the method comprises the steps of: —providing a fibrous suspension comprising a microfibrillated cellulose, wherein the content of the microfibrillated cellulose of said suspension is in the range of 60 to 99.9 weight-% based on total dry solid content, —adding an uncharged, amphoteric or weakly cationic polymer having a molecular weight of at least 50000 g/mol to said suspension, —adding an anionic polymer having a molecular weight of at least 00000 g/mol to said suspension to provide a mixture of said microfibrillated cellulose, said uncharged, amphoteric or weakly cationic polymer and said anionic polymer, 1—providing said mixture to a substrate to form a fibrous web, wherein the amount of uncharged, amphoteric or weakly cationic polymer in said mixture is in the range of 0.1 to 20 kg/metric ton based on total dry solid content and wherein the amount of anionic polymer in said mixture is in the range of 0.01 to 10 kg/metric ton based on total dry 20 solid content; and—dewatering said fibrous web to form a fibrous product.
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公开(公告)号：US11319671B2
公开(公告)日：2022-05-03
申请号：US16080359
申请日：2017-03-30
Applicant: Stora Enso OYJ
Inventor： Kaj Backfolk , Isto Heiskanen , Esa Saukkonen , Katja Lyytikäinen
IPC: D21H11/18 , D21H17/68 , D21H17/37 , D21H17/28 , D21H17/55 , D21H21/10 , D21H27/38 , D21H17/44 , D21H17/29 , D21H21/52 , D21H17/24 , D21H27/10 , D21H17/13 , D21H21/50 , B82Y30/00
Abstract: The present invention relates to a new process for improving dewatering when manufacturing a film comprising high amounts of microfibrillated cellulose (MFC) without negatively impacting the film properties. According to the present invention a high amount of nanoparticles is used as an additive, optionally together with a polymer.
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80.发明申请公开(公告)号：US20220074140A1
公开(公告)日：2022-03-10
申请号：US17415878
申请日：2019-12-20
Applicant: Stora Enso OYJ
Inventor： Isto Heiskanen , Katja Lyytikäinen , Otto Nylén , Kaj Backfolk
Abstract: The present invention relates to a method for preparing a surface-treated fibrous material comprising nanocellulose, in which a fibrous material is surface treated with an organic acid or salt thereof. Fibrous materials as such are also provided. The present technology allows improved Water Vapor Transmission Rates (WVTR) for the fibrous material, while operating on an industrial scale.
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