-
公开(公告)号：US20230135217A1
公开(公告)日：2023-05-04
申请号：US17995447
申请日：2021-04-14
申请人： Stora Enso OYJ
摘要： The present invention relates to a method for manufacturing a multilayer film comprising highly refined cellulose fibers, the method comprising the steps of: a) forming a first wet web by applying a first pulp suspension comprising highly refined cellulose fibers on a first wire; b) partially dewatering the first wet web to obtain a first partially dewatered web; c) forming a second wet web y applying a foamed second pulp suspension comprising highly refined cellulose fibers and a foaming agent on a second wire; d) partially dewatering the foamed second wet web to obtain a second partially dewatered web; e) joining the first and second partially dewatered web to obtain a multilayer web; and f) further dewatering, and optionally drying, the multilayer web to obtain a multilayer film comprising highly refined cellulose fibers.
-
公开(公告)号：US20230131438A1
公开(公告)日：2023-04-27
申请号：US17996940
申请日：2021-05-06
申请人： Stora Enso OYJ
发明人： Kaj Backfolk , Isto Heiskanen , Katja Lyytikäinen
摘要： The present invention is directed to a coated paper substrate that is particularly suitable for metallization and other nano-coatings that provide barrier properties and are applied using vacuum deposition techniques. The invention is also directed to a process for preparing the coated paper substrate. The invention is also directed to a packaging material comprising the coated paper substrate.
-
公开(公告)号：US20230016725A1
公开(公告)日：2023-01-19
申请号：US17756983
申请日：2020-12-15
申请人： Stora Enso OYJ
发明人： Kaj Backfolk , Isto Heiskanen
摘要： The present invention relates to a foam formed solid composite, comprising: a matrix phase consisting of a mixture of nanocellulose, at least one foaming agent, and optional additives, and a dispersed phase consisting of solid low-density particles having a density of less than 1.2 kg/dm3. The present invention further relates to a method and a liquid foam composition for manufacturing the solid composite.
-
公开(公告)号：US11504956B2
公开(公告)日：2022-11-22
申请号：US16471983
申请日：2017-12-21
申请人： Stora Enso OYJ
发明人： Isto Heiskanen , Esa Saukkonen
摘要： The present invention relates to a method for the production of a coated paper, paperboard or film, wherein the method comprises the steps of; providing a first suspension comprising cellulose fibers, applying the first suspension on a substrate to form a fibrous web, wherein the web has a first and a second side, providing a second suspension comprising micro fibrillated cellulose, applying the second suspension either to the first side of the fibrous web or to a surface of a drying equipment and conducting said fibrous web through the drying equipment whereby the second suspension is added to the first side of the web forming the coated paper, paperboard or film. The invention also relates to a paper, paperboard or film produced according to the method.
-
公开(公告)号：US20220363871A1
公开(公告)日：2022-11-17
申请号：US17597317
申请日：2020-06-30
申请人： Stora Enso OYJ
发明人： Ulla Jansson , Anders Moberg , Kaj Backfolk
摘要： 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.
-
公开(公告)号：US20220340735A1
公开(公告)日：2022-10-27
申请号：US17753798
申请日：2020-09-15
申请人： Stora Enso OYJ
摘要： The present invention is directed to a film or coating comprising a fiber material, wherein at least 60% by weight of said fiber material is microfibrillated cellulose, said film or coating also comprising at least 1% by weight of extractives from wood bark or cork wood. The invention is also directed to products, such as packaging materials, using or incorporating said film or coating. Such packaging materials are for example laminates or multi-layer structures. The films or coatings according to the present invention having advantageous barrier properties and are therefore particularly suitable for sensitive objects that need to be packaged in a controlled or modified atmosphere. The present invention is also directed to a composition comprising a fiber material, wherein at least 60% by weight of said fiber material is microfibrillated cellulose, said composition also comprising at least 1% by weight of extractives from wood bark or cork wood. The composition is useful for example in the preparation of the film or coating.
-
公开(公告)号：US11441272B2
公开(公告)日：2022-09-13
申请号：US16643060
申请日：2018-08-30
申请人： Stora Enso OYJ
发明人： Tuomo Sippus
摘要： The present invention relates to a method for producing a paperboard comprising the steps of; providing a furnish comprising cellulosic fibers, applying the furnish on at least one wire to form a web, dewatering the web on said at least one wire by subjecting the web to a pressure above 150 kPa without the use of a press roll nip and thereafter pressing the dewatered web to form a paperboard. The invention also relates to a paperboard and a corrugated board.
-
公开(公告)号：US20220243401A1
公开(公告)日：2022-08-04
申请号：US17610860
申请日：2020-05-13
申请人： Stora Enso OYJ
摘要： The invention relates to a method for applying starch to a paper or paperboard web, the method comprising the steps of: providing an aqueous suspension comprising starch particles and at least 1 wt %, based on the dry solid content of the suspension, of an amphiphilic polymer, creating a foam of the aqueous suspension, and applying the foam to the paper or paperboard web. The invention further relates to a paper or paper board product obtained by the method.
-
公开(公告)号：US20220242636A1
公开(公告)日：2022-08-04
申请号：US17597218
申请日：2020-06-30
申请人： Stora Enso OYJ
发明人： Susanne Hansson , Raija Bådenlid , Kaj Backfolk
IPC分类号： B65D65/42 , B32B29/00 , B32B29/06 , D21H11/18 , D21H27/30 , C08L1/02 , C08L5/14 , C08L29/04 , D21H21/16
摘要： The present invention relates to a paper or paperboard substrate having barrier properties, which substrate comprises a single or multiply structure with e.g. a top ply, a middle ply and a bottom ply, wherein at least one of said top ply and said bottom ply is provided with a high-density bio-barrier layer, and wherein said top or bottom ply provided with the high-density bio-barrier layer and said top or bottom ply not provided with the high-density bio-barrier layer have both been subjected to grafting with a fatty acid halide.
-
公开(公告)号：US11370894B2
公开(公告)日：2022-06-28
申请号：US15760120
申请日：2016-09-20
IPC分类号： C08J9/34 , C08J9/00 , B32B5/14 , C08J5/06 , C08J5/04 , B29B7/90 , B29B9/14 , B29C44/34 , B29C44/44 , B29K25/00 , B29K401/00
摘要： The present invention relates to a method of making a foamed cellulosic fiber-thermoplastic composite article. The method includes the steps of providing a copolymer composition, combining the copolymer composition and cellulosic fibers, applying heat, mixing energy and pressure to form a foamable mixture, and forming the foamable article in a molding or extruding operation. The method is characterized in that at least 10% of the cellulosic fibers have been thermally modified prior to being combined with the copolymer composition.
-
-
-
-
-
-
-
-
-
搜索结果
442 条记录 (耗时 0.053 秒)