公开(公告)号：US20180355557A1

公开(公告)日：2018-12-13

申请号：US15739394

申请日：2016-06-21

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Esa Tapio Saukkonen ,  Katja Eliisa Lyytikainen

IPC: D21H17/28 ,  D21H21/06 ,  D21H19/34 ,  D21H21/56 ,  D21H23/28 ,  C09D101/02 ,  C09D103/04 ,  C09D7/40

CPC classification number: D21H17/28 ,  C08L1/02 ,  C09D7/70 ,  C09D101/02 ,  C09D103/02 ,  C09D103/04 ,  D21H11/18 ,  D21H19/34 ,  D21H19/54 ,  D21H21/06 ,  D21H21/56 ,  D21H23/28

Abstract: A method for manufacturing of a film, wherein said film is manufactured in a paper or paper board machine, wherein the method comprises the steps of providing a solution of a nanofibrillated poly-saccharide, wherein said solution comprises from 0.01 to 50 weight-% nanofibrillated polysaccharide, and wherein the nanofibrillated polysaccharide is any one of microfibrillated cellulose, nanofibrillated cellulose, nanocrystalline cellulose, microcrystalline cellulose, cellulose whiskers and cellulose derivative or a combination or mixture thereof, wherein the method further comprises the steps of providing an amphiphilic polymer; and providing a mixture of said amphiphilic polymer and said solution comprising nanofibrillated polysaccharide, whereby an intermediate solution is obtained; bringing said intermediate solution into a foam; providing said foam in the paper or board machine.

公开(公告)号：US20180056695A1

公开(公告)日：2018-03-01

申请号：US15560242

申请日：2016-03-23

Applicant: STORA ENSO OYJ

Inventor： Kaj Backfolk ,  Katriina Mielonen ,  Sami Ovaska

IPC: B41M5/52 ,  B41M5/50 ,  C09D103/08 ,  C09D7/12 ,  D21H19/54 ,  D21H19/40 ,  D21H19/82 ,  D21H19/84 ,  D21H27/10

CPC classification number: B41M5/52 ,  B32B29/00 ,  B41M5/508 ,  B41M5/5218 ,  B41M5/5236 ,  C08K3/346 ,  C09D1/00 ,  C09D7/61 ,  C09D103/08 ,  D21H17/28 ,  D21H17/68 ,  D21H19/40 ,  D21H19/54 ,  D21H19/80 ,  D21H19/822 ,  D21H19/84 ,  D21H27/10

Abstract: A method of manufacturing a paper or paperboard with improved printing properties, which method comprises the steps of, providing a paper or paperboard substrate, comprising cellulosic fibres, providing a coating composition comprising a mixture of an esterified or etherified starch and a inorganic mineral; and coating at least one surface of said substrate with at least one layer of said coating composition.

公开(公告)号：US20150299959A1

公开(公告)日：2015-10-22

申请号：US14441268

申请日：2013-11-06

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 ,  D21H11/18

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 method for the production of a composite material comprising nanofibrillated polysaccharide, the method comprising the following steps: (i) providing a liquid suspension of the nanofibrillated polysaccharide; (ii) bringing said liquid suspension in contact with at least one additive, thereby forming a composite material suspension, wherein the composite comprises the nanofibrillated polysaccharide and the at least one additive, (iii) increasing the solid contents of said composite material suspension, thereby forming a high solid contents composite material suspension.

Abstract translation: 一种制备包含纳米纤维化多糖的复合材料的方法，所述方法包括以下步骤：（i）提供纳米纤维化多糖的液体悬浮液; （ii）使所述液体悬浮液与至少一种添加剂接触，从而形成复合材料悬浮液，其中复合材料包含纳米纤维化多糖和至少一种添加剂，（iii）增加所述复合材料悬浮液的固体含量，从而 形成高固体含量的复合材料悬浮液。

公开(公告)号：US12258715B2

公开(公告)日：2025-03-25

申请号：US17610860

申请日：2020-05-13

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Johanna Lyytikainen

IPC: D21H19/12 ,  D21H23/48 ,  D21H23/50 ,  D21J1/08

Abstract: 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：US12258711B2

公开(公告)日：2025-03-25

申请号：US17995447

申请日：2021-04-14

Applicant: Stora Enso OYJ

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

IPC: D21F9/00 ,  D21F11/00 ,  D21H11/18 ,  D21H17/29 ,  D21H21/06 ,  D21H27/38

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 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：US20240376670A1

公开(公告)日：2024-11-14

申请号：US18690070

申请日：2022-08-31

Applicant: Stora Enso OYJ

Inventor： Otto Nylén ,  Isto Heiskanen ,  Jukka Kankkunen ,  Kaj Backfolk

IPC: D21H11/08 ,  D21H19/34 ,  D21H25/12

Abstract: The present invention relates to a method for producing a film comprising microfibrillated cellulose, which comprises: providing a suspension comprising 30-100 weight-% microfibrillated cellulose based on total dry weight: forming a wet web of said suspension by casting on a support being a non-porous support, paper or paperboard: wet-pressing said wet web to form a dewatered web, which comprises applying a press fabric into direct contact with said wet web and conducting said wet web, arranged between said press fabric and said non-porous support, through a pressing equipment: smoothening said dewatered web by applying at least one smoothing press to said dewatered web arranged on said non-porous support so as to form a smoothened web, wherein a pressure of 0.1-25 MPa is applied in each smoothing press, wherein said dewatered web has a dry content of 20-60% by weight when applying said smoothing press(es), and drying said smoothened web to form said film. The invention further relates to a film.

公开(公告)号：US12084563B2

公开(公告)日：2024-09-10

申请号：US17597317

申请日：2020-06-30

Applicant: Stora Enso OYJ

Inventor： Ulla Jansson ,  Anders Moberg ,  Kaj Backfolk

IPC: C08L1/02 ,  D21C9/00 ,  D21H11/02 ,  D21H11/18 ,  D21H21/18 ,  D21H21/52 ,  D21H27/30

CPC classification number: C08L1/02 ,  D21C9/007 ,  D21H11/02 ,  D21H11/18 ,  D21H21/18 ,  D21H21/52 ,  D21H27/30

Abstract: 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：US20240229358A9

公开(公告)日：2024-07-11

申请号：US18548368

申请日：2022-03-08

Applicant: Stora Enso OYJ

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

IPC: D21H11/18 ,  D21F1/80 ,  D21F9/00 ,  D21H23/28 ,  D21H23/48 ,  D21H27/30

CPC classification number: D21H11/18 ,  D21F1/80 ,  D21F9/003 ,  D21H23/28 ,  D21H23/48 ,  D21H27/30

Abstract: The present invention relates to a method for manufacturing a barrier film comprising highly refined cellulose, 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, at a consistency in the range of 0.1-1.5 wt %; b) forming a web of the highly refined cellulose pulp suspension and dewatering the web in a paper machine former on a wire to a consistency of at least 5 wt % to obtain a substrate web, wherein the white water removed from the pulp contains 2-25 wt %, preferably 5-20 wt % and more preferably at least 5-15 wt % of the solids of the highly refined cellulose pulp suspension provided in step a); c) optionally further dewatering and optionally drying the substrate web; d) coating the optionally further dewatered and optionally dried substrate web with a coating suspension comprising cellulose fines or microfibrillated cellulose to obtain a coated web; and e) dewatering and/or drying the coated web to obtain a barrier film comprising highly refined cellulose.

公开(公告)号：US11952718B2

公开(公告)日：2024-04-09

申请号：US17417882

申请日：2020-01-23

Applicant: Stora Enso OYJ

Inventor： Frank Peng ,  Kaj Backfolk ,  Isto Heiskanen ,  Teija Laukala

IPC: D21H11/18 ,  D21H17/67 ,  D21H19/52 ,  D21H23/28 ,  D21H23/48 ,  D21H23/50 ,  D21H27/10 ,  D21H27/32 ,  D21H27/38 ,  D21H27/40

CPC classification number: D21H11/18 ,  D21H17/67 ,  D21H19/52 ,  D21H23/28 ,  D21H23/48 ,  D21H23/50 ,  D21H27/10 ,  D21H27/32 ,  D21H27/38 ,  D21H27/40

Abstract: The invention discloses a paperboard comprising a base ply, a top ply, and an intermediate layer disposed in-between the at least one base ply and the top ply. The intermediate layer comprises pigment and microfibrillated cellulose (MFC). The application of an intermediate layer comprising pigment and MFC in-between the base ply and the top ply gives rise to improved optical properties of the paperboard, even when using an uncoated top ply having a low grammage This makes it possible to reduce the grammage of the top ply and still obtain good optical properties.

公开(公告)号：US20240034027A1

公开(公告)日：2024-02-01

申请号：US18258274

申请日：2021-12-14

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Jukka Kankkunen ,  Anna Nyberg Zetterlund

IPC: B32B7/12 ,  B32B29/00 ,  B32B37/12 ,  B32B29/02 ,  B32B38/00 ,  B32B37/02

CPC classification number: B32B7/12 ,  B32B29/002 ,  B32B37/12 ,  B32B29/02 ,  B32B38/004 ,  B32B37/02 ,  B32B2037/1269 ,  B32B2317/12 ,  B32B2262/04 ,  B32B2260/021 ,  B32B2260/046 ,  B32B2307/718 ,  B32B2305/026 ,  B32B2307/538

Abstract: The present invention relates to packaging materials in the form of laminates comprising a paper or paperboard substrate and a barrier film. The barrier film is based on microfibrillated cellulose. The laminate comprises a paper or paperboard substrate, wherein the substrate is in contact with a first adhesive layer, which is in contact with a second adhesive layer, which is in contact with the barrier film. The present invention also relates to methods for manufacturing such laminates.