公开(公告)号：US20180245289A1

公开(公告)日：2018-08-30

申请号：US15758963

申请日：2016-09-16

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Esa Saukkonen

IPC: D21H21/16 ,  D21H11/18 ,  D21H17/26 ,  D21H17/57

CPC classification number: D21H21/16 ,  D21H11/18 ,  D21H17/26 ,  D21H17/57 ,  D21H19/10 ,  D21H19/36

Abstract: A method for manufacturing a film, wherein said film has a basis weight of less than 50 g/m2 and wherein the density of the film is higher than 750 kg/m2 comprising the steps of: providing a suspension comprising microfiber Hated cellulose (MFC); forming a web of said suspension on a porous wire, microfibrillated cellulose (MFC); surface sizing said web, wherein the web, at the beginning of the surface sizing step, has a moisture content in the rage from 10 to 50 wt-%; drying said surface sized web to a final moisture content of between 0.1-20 wt-% to form said film.

公开(公告)号：US20180245287A1

公开(公告)日：2018-08-30

申请号：US15754870

申请日：2016-09-16

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk

IPC: D21H11/18 ,  D21H21/10 ,  D21H17/32 ,  D21H17/37 ,  B32B27/10

CPC classification number: D21H11/18 ,  B32B27/10 ,  B32B2250/02 ,  B32B2323/043 ,  B32B2323/046 ,  D21H17/22 ,  D21H17/24 ,  D21H17/28 ,  D21H17/31 ,  D21H17/32 ,  D21H17/375 ,  D21H21/10

Abstract: A method for the production of a film 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 amphoteric polymer to said suspension to provide a mixture of said microfibrillated cellulose and said amphoteric polymer, providing said mixture to a substrate to form a fibrous web, wherein the amount of amphoteric polymer in said mixture is in the range of 0.1 to 20 kg/metric ton based on total dry solid content; and dewatering said fibrous web to form a film having a basis weight of less than 40 g/m2 and a density in the range of from 700 to 1000 kg/m3

公开(公告)号：US20170107669A1

公开(公告)日：2017-04-20

申请号：US15389482

申请日：2016-12-23

Applicant: Stora Enso Oyj

Inventor： Lars Axrup ,  Heidi Saxell ,  Veikko Jokela ,  Henri Kastinen ,  Anna Kauppi ,  Kaj Backfolk ,  Nina Ruohoniemi ,  Risto Laitinen ,  Isto Heiskanen ,  Teija Laukala

IPC: D21H17/67 ,  C08B15/02 ,  D21H17/24 ,  D21H11/18 ,  D21H17/64

CPC classification number: D21H17/675 ,  C08B15/02 ,  C08K3/26 ,  C08K2003/265 ,  C08L2205/16 ,  D21H11/18 ,  D21H17/24 ,  D21H17/64 ,  D21H17/67 ,  C08L1/04

Abstract: A substantially dry composite material comprising a nanofibrillated polysaccharide and two or more additives, wherein the composite nanofibrillated polysaccharide is a microfibrillated cellulose and wherein the additives are lime milk and carbon dioxide, wherein the additives are allowed to react with each other and forming a precipitated calcium carbonate on the nanofibrillated polysaccharide, thereby forming a composite product comprising precipitated calcium carbonate and nanofibrillated polysaccharide.

公开(公告)号：US20250162303A1

公开(公告)日：2025-05-22

申请号：US18842939

申请日：2023-02-23

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Tommi Nordström ,  Kaj Backfolk ,  Raino Kauppinen

IPC: B32B37/24 ,  B32B7/12 ,  B32B29/06 ,  B32B37/00 ,  B32B37/06 ,  B32B37/10 ,  B32B37/26

Abstract: The present invention relates to a method for manufacturing a barrier layer for a paper or paperboard based packaging laminate. said method comprising: a) providing a barrier substrate comprising at least 50 wt % highly refined cellulose pulp (HRC) based on dry weight of the barrier substrate. said HRC having a Schopper-Riegler (SR) number above 80 as determined by standard ISO 5267-1, b) providing a transfer coating substrate comprising a vacuum coating layer and a backing layer separated by a release layer, and c) transferring the vacuum coating layer from the backing layer to the barrier substrate by a transfer coating process using an adhesive layer applied on the barrier substrate and/or the vacuum coating layer to obtain a barrier layer for a paper or paperboard based packaging laminate.

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

IPC: D21H21/18 ,  D21D1/20 ,  D21H11/02 ,  D21H11/18 ,  D21H15/06

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.

公开(公告)号：US12152345B2

公开(公告)日：2024-11-26

申请号：US17046410

申请日：2019-04-12

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Jukka Kankkunen ,  Antti Veitola

IPC: D21H19/12 ,  B32B27/10 ,  B32B29/06 ,  B32B37/15 ,  B32B37/20 ,  D21G1/00 ,  D21H11/18 ,  D21H19/84 ,  D21H23/56 ,  D21H23/64

Abstract: 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 and/or nanocellulose, 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 polymers and/or particles wherein the second suspension has a Brookfield viscosity above 3000 m Pas at a dry content between 4%-40% by weight, providing at least one calender comprising at least one roll or belt, applying the second suspension to the surface of the at least one calender roll or belt forming a coating web and conducting said fibrous web through the at least one calender whereby the coating web is applied 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：US20240308741A1

公开(公告)日：2024-09-19

申请号：US18578479

申请日：2022-07-07

Applicant: Stora Enso OYJ

Inventor： Chris Bonnerup ,  Kaj Backfolk ,  Fredrik Werner

IPC: B65D65/40 ,  B32B27/10 ,  B32B27/30 ,  B32B27/32 ,  B32B29/00

CPC classification number: B65D65/40 ,  B32B27/10 ,  B32B27/306 ,  B32B27/32 ,  B32B29/005 ,  B32B2255/10 ,  B32B2255/12 ,  B32B2255/205 ,  B32B2255/26 ,  B32B2255/28 ,  B32B2264/10 ,  B32B2307/718 ,  B32B2307/7244 ,  B32B2307/7246 ,  B32B2439/00 ,  B32B2553/00 ,  B65D2565/383 ,  B65D2565/387

Abstract: A paper or paperboard based packaging laminate comprising: a paper or paperboard base layer, a mineral coating layer, a PVOH coating layer, and a metallized film layer, wherein the mineral coating layer is arranged between and in contact with the base layer and the PVOH coating layer, and wherein the metallized film layer is laminated to the PVOH coating layer, and wherein the packaging laminate has an oxygen transfer rate (OTR), measured according to the standard ASTM F-1927 at 90% relative humidity and 38° C., of less than 5 cc/m2/day. Also a container with such a paper or paperboard based packaging laminate.

公开(公告)号：US20240263399A1

公开(公告)日：2024-08-08

申请号：US18566361

申请日：2022-06-03

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Katja Lyytikäinen

IPC: D21H21/16 ,  B32B29/00 ,  B65D65/40 ,  D21H11/18 ,  D21H19/12 ,  D21H19/40 ,  D21H19/46 ,  D21H19/54 ,  D21H23/22 ,  D21H27/10

CPC classification number: D21H21/16 ,  B32B29/005 ,  B65D65/40 ,  D21H11/18 ,  D21H19/12 ,  D21H19/40 ,  D21H19/46 ,  D21H19/54 ,  D21H23/22 ,  D21H27/10 ,  B32B2255/12 ,  B32B2255/24 ,  B32B2307/718 ,  B32B2307/7244 ,  B32B2307/7246

Abstract: The present invention relates to a biobased barrier film for a paper or paperboard-based packaging material, said barrier film comprising: a substrate layer and a coating layer disposed on at least one surface of the substrate layer, wherein said substrate layer has a grammage in the range of 1-60 g/m2 and comprises at least 50 wt % of highly refined cellulose pulp based on the dry weight of the substrate layer, and wherein said coating layer has a grammage in the range of 1-15 g/m2 and comprises at least 50 wt % of a film forming modified starch and 0.1-10 wt % of a biobased lubricant, based on the dry weight of the coating layer.

公开(公告)号：US20240240403A1

公开(公告)日：2024-07-18

申请号：US18559419

申请日：2022-05-13

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Jukka Kankkunen ,  Tuomo Sippus

IPC: D21H11/06 ,  D21C9/02 ,  D21H17/20 ,  D21H21/10 ,  D21H21/16 ,  D21H27/40

CPC classification number: D21H11/06 ,  D21C9/02 ,  D21H17/20 ,  D21H21/10 ,  D21H21/16 ,  D21H27/40

Abstract: The present invention relates to a fluting or liner for corrugated board comprising a neutral sulfite semi chemical (NSSC) pulp, wherein said NSSC pulp has an ash content of less than 1.8 wt %, as determined according to standard ISO 1762:2019. The invention further relates to a corrugated board comprising the fluting and/or liner.

公开(公告)号：US20240209573A1

公开(公告)日：2024-06-27

申请号：US18555326

申请日：2022-04-13

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Katja Lyytikäinen ,  Isto Heiskanen ,  Tommi Nordström ,  Anna Kauppi

IPC: D21H19/12 ,  B29C43/24 ,  B29K1/00 ,  D21H11/18 ,  D21H19/72 ,  D21H25/06

CPC classification number: D21H19/12 ,  B29C43/24 ,  D21H11/18 ,  D21H19/72 ,  D21H25/06 ,  B29K2001/00 ,  B29K2995/0063

Abstract: The present invention relates to a process for manufacturing a barrier film, wherein the method comprises:— providing an aqueous suspension comprising at least 70 weight-% highly refined cellulose pulp having an SR value of 70-95 and having a content of fibers having a length >0.2 mm of at least 10 million fibers per gram based on dry weight:— forming a wet web:— dewatering and/or drying to form a substrate:— calendering said substrate in at least one soft calender nip:— providing said substrate with at least one first layer of a barrier chemical to form a coated substrate, wherein each first layer has a coat weight of 0.5-5 gsm, and wherein a total coat weight on of the first layers is ≤8 gsm, and— drying to form said barrier film having a thickness of