公开(公告)号：US12264227B2

公开(公告)日：2025-04-01

申请号：US17756983

申请日：2020-12-15

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen

IPC: C08J9/35 ,  B82Y30/00 ,  C08J9/00 ,  C08L1/02

Abstract: 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：US12258710B2

公开(公告)日：2025-03-25

申请号：US17995446

申请日：2021-04-14

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Katja Lyytikäinen ,  Jukka Kankkunen

IPC: D21F11/04 ,  B32B3/26 ,  B32B5/02 ,  B32B5/26 ,  B32B7/12 ,  B32B37/12 ,  D21H11/18 ,  D21H19/34 ,  D21H23/24 ,  D21H23/48 ,  D21H23/50 ,  D21H27/36

Abstract: 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 by applying a second pulp suspension comprising highly refined cellulose fibers on a second wire; d) partially dewatering the second wet web to obtain a second partially dewatered web; e) applying a binder between the first and second partially dewatered web and 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：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

IPC: D21H11/18 ,  B32B29/00 ,  B65D65/40 ,  D21H27/10

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.

公开(公告)号：US12163064B2

公开(公告)日：2024-12-10

申请号：US17059590

申请日：2019-06-28

Applicant: Stora Enso OYJ

Inventor： Ben Nasli Bakir ,  Staffan Torssell ,  Lars Hjelm ,  Li Jansson ,  Huynh Tram Anh Pham ,  Ashar Zafar

IPC: C09J197/00 ,  B27N3/00 ,  B27N3/02 ,  B27N3/04 ,  C08K5/1515

Abstract: The present invention relates to a process for preparing a bonding resin, wherein lignin is provided in the form of an aqueous solution and mixed with one or more of glycerol diglycidyl ether, polyglycerol diglycidyl ether, polyglycerol polyglycidyl ether, glycerol triglycidyl ether, sorbitol polyglycidyl ether, alkoxylated glycerol polyglycidyl ether, trimethylolpropane triglycidyl ether, trimethylolpropane diglycidyl ether, polyoxy propylene glycol diglycidylether, polyoxypropylene glycol triglycidyl ether, diglycidylether of cyclohexane dimethanol, resorcinol diglycidyl ether, isosorbide diglycidyl ether, pentaerythritol tetraglycidyl ether, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether having 2-9 ethylene glycol units, propylene glycol diglycidyl ether having 1-5 propylene glycol units, and/or diglycidyl ether of terminal diol having a linear carbon chain of 3-6 carbon atoms; and optionally one or more additives. The bonding resin is useful for example in the manufacture of laminates, mineral wool insulation and wood products such as plywood, oriented strandboard (OSB), laminated vencer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF), parquet flooring, curved plywood, veneered particleboards, veneered MDF or particle boards.

公开(公告)号：US20240300690A1

公开(公告)日：2024-09-12

申请号：US18578760

申请日：2022-07-12

Applicant: Stora Enso OYJ

Inventor： Marie Bondesson

IPC: B65D5/22 ,  B65D5/24 ,  B65D5/66

CPC classification number: B65D5/22 ,  B65D5/247 ,  B65D5/6667

Abstract: The disclosure relates to a blank (1) configured to form a package (100), the blank (1) comprising a bottom panel (10), a rear wall panel (21), a front wall panel (22), two opposing end wall panels (31, 32), two opposing sets of top wall panels (40), two rear sets of corner panels (50) and two rear locking flaps (55). Each set of top wall panels (40) is configured to form a double-walled top wall (140) when the blank (1) is erected to form the package (100). Each rear locking flap (55) being foldably connected to an outwardly facing longitudinally or transversally extending side of the respective rear set of corner panels (50) and extending away from the respective rear set of corner panels (50) such that the rear locking flap (55), as the blank (1) is erected into the package (100), extends longitudinally inwardly from the respective end wall panel (31, 32) and such that each rear locking flap (55) is positioned between the respective first and second top wall panel (41, 42) forming the double-walled top wall (140). The disclosure also relates to a package (100) formed from a blank (1).

公开(公告)号：US12071518B2

公开(公告)日：2024-08-27

申请号：US17280409

申请日：2019-10-07

Applicant: Stora Enso OYJ

Inventor： Ben Nasli Bakir ,  Katarina Hägg

IPC: C08H6/00 ,  C08H7/00 ,  C08L97/00

CPC classification number: C08H6/00 ,  C08L97/005

Abstract: The present invention relates to an improved process for preparing an aqueous dispersion of lignin and the use of said suspension in the preparation of a resin.

公开(公告)号：US20240192115A1

公开(公告)日：2024-06-13

申请号：US18552270

申请日：2022-03-25

Applicant: Stora Enso OYJ

Inventor： Robertas Maldzius ,  Jonas Sidaravicius ,  Tadeus Lozovski ,  Kaj Backfolk ,  Isto Heiskanen

IPC: G01N15/08

CPC classification number: G01N15/082

Abstract: The present invention relates to an arrangement for determining the permeability of a sample, said arrangement comprising a source of fluid medium arranged such that at least a fraction of said medium can be brought into contact with a first surface of said sample to be tested; means for measuring the electrical properties at a second surface of said sample, wherein the second surface is opposite said first surface of said sample; and a controller for recording said electrical properties, and for determining the transmission rate of the fluid medium through the sample based on the recorded electrical properties.

公开(公告)号：US11981838B2

公开(公告)日：2024-05-14

申请号：US17048715

申请日：2019-04-16

Applicant: Stora Enso OYJ

Inventor： Ben Nasli Bakir ,  Ashar Zafar ,  Jesper Ekström

IPC: C09J197/00 ,  C08H7/00 ,  C08L97/02 ,  C09J161/06

CPC classification number: C09J197/005 ,  C08H6/00 ,  C08L97/02 ,  C09J161/06

Abstract: The present invention relates to an adhesive formulation comprising lignin, suitable for use in the manufacture of for example wood products. The lignin is provided in the form of a solution or dispersion or in dry solid form, such as in the form of a powder. The adhesive formulation also comprises phenol-formaldehyde (PF) resin and/or lignin-phenol-formaldehyde (LPF) resin. The adhesive formulation may also comprise extenders, hardeners, fillers and other additives, to achieve an adhesive formulation useful in the manufacture of for example wood products, such as plywood and laminated veneer lumber (LVL). The adhesive formulation can also be used in the manufacture of laminates and oriented strand boards.

公开(公告)号：US20240141588A1

公开(公告)日：2024-05-02

申请号：US18548367

申请日：2022-03-08

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Jukka Kankkunen ,  Anna Kauppi

IPC: D21C9/18 ,  D21C11/00

CPC classification number: D21C9/18 ,  D21C11/0042

Abstract: The present invention relates to a method for fractionation of a highly refined cellulose pulp into a fine fraction and coarse fraction, 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; b) subjecting the highly refined cellulose pulp suspension to dewatering in a belt filter; c) collecting the dewatered retentate as the coarse fraction; and d) collecting the filtrate as the fine fraction; wherein the collected fine fraction contains 2-50 wt % of the solids of the highly refined cellulose pulp suspension provided in step a).

公开(公告)号：US20230332341A1

公开(公告)日：2023-10-19

申请号：US18042652

申请日：2021-07-09

Applicant: Stora Enso OYJ

Inventor： Martin Malmqvist

IPC: D04H1/732 ,  D04H1/26 ,  D04H1/587 ,  D04H1/60 ,  D04H1/541

CPC classification number: D04H1/732 ,  D04H1/26 ,  D04H1/587 ,  D04H1/60 ,  D04H1/5418

Abstract: An air-laid blank (10) comprises natural fibers at a concentration of at least 70% by weight of the air-laid blank (10) and a thermoplastic polymer binder at a concentration selected within an interval of from 2.5 up to 30% by weight of the air-laid blank (10). The air-laid blank (10) has an average density and a portion (11) of the air-laid blank (10) has a density different from the average density. The air-laid blank (10) is produced by modifying the air-permeability of a portion (121) of an air-permeable collector (120) to form a portion (11) of the air-laid blank (10) having a density from the average density. The air-laid blank (10) has two parallel planar major surfaces (12, 14)