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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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72.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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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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Patent Agency Ranking
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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77.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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公开(公告)号：US11198973B2
公开(公告)日：2021-12-14
申请号：US16465426
申请日：2017-11-30
Applicant: Stora Enso OYJ
Inventor： Kaj Backfolk , Isto Heiskanen , Esa Saukkonen
Abstract: The present invention relates to a process wherein microfibrillated cellulose (MFC) is mixed with at least two retention aids, selected from a cationic or amphoteric polymer and a microparticle or nanoparticle as a pre-mix before dosing it to the stock in a process for manufacture of a fiber based product.
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公开(公告)号：US11192987B2
公开(公告)日：2021-12-07
申请号：US16489801
申请日：2018-02-27
Applicant: Stora Enso OYJ
Inventor： Kaj Backfolk , Isto Heiskanen , Esa Saukkonen
Abstract: The present invention relates to a new process for improving runnability and dimensional stability 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 retention polymer.
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公开(公告)号：US11161948B2
公开(公告)日：2021-11-02
申请号：US16096800
申请日：2017-04-26
Applicant: Stora Enso OYJ
Inventor： Kaj Backfolk , Isto Heiskanen , Esa Saukkonen , Jukka Kankkunen
Abstract: The present invention is directed to a film comprising a base film which has been coated on at least one side with a coating that enhances gas and/or moisture barrier properties, wherein the base film comprises a fiber material and at least 60% by weight of said fiber material is microfibrillated cellulose, and the thickness of the coating is from 0.05 to 20 μm. The invention is also directed to products using said film. Such products are in particular packages suitable for sensitive objects that need to be packaged in a controlled or modified atmosphere. The film is also useful for other purposes, such as in the manufacture of balloons.
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