公开(公告)号：WO2022107007A1

公开(公告)日：2022-05-27

申请号：PCT/IB2021/060639

申请日：2021-11-17

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN, Isto ,  BACKFOLK, Kaj ,  LYYTIKÄINEN, Katja ,  KANKKUNEN, Jukka

IPC: D21H19/08 ,  B32B7/02 ,  B32B29/00 ,  D21H19/82 ,  B32B15/04 ,  B32B15/20 ,  C08J5/18 ,  C08L1/02 ,  D21H19/00

Abstract: The present invention relates to a barrier film for a paper or paperboard-based packaging material, said barrier film comprising: a substrate; a vacuum coating layer having a thickness in the range of 1-500 nm disposed on the substrate; and a protective coating layer comprising a crosslinked water-soluble polymer disposed on the vacuum coating layer. The present invention further relates to a paper or paperboard based packaging material and containers comprising the barrier film, and to a method for manufacturing the barrier film.

公开(公告)号：WO2021090191A1

公开(公告)日：2021-05-14

申请号：PCT/IB2020/060348

申请日：2020-11-04

Applicant: STORA ENSO OYJ

Inventor： BACKFOLK, Kaj ,  BONNERUP, Chris ,  HEISKANEN, Isto ,  LYYTIKÄINEN, Katja

IPC: C09D101/28 ,  B32B27/10 ,  D21H19/12 ,  D21H21/16 ,  B32B23/06 ,  B32B29/00 ,  C08L1/28 ,  D21H19/34 ,  D21H19/52

Abstract: A method for reducing the surface oil absorption of cellulose based substrate is provided, in which a coating composition is applied to said substrate; and in which the coating composition comprises carboxymethyl cellulose (CMC) and/or a salt of carboxymethyl cellulose (CMC). A coated paperboard, and a laminate of the coated paperboard with a polymer layer is also provided. The coating composition provides improved surface oil absorption and improved adherence of an overlying polymer layer.

公开(公告)号：WO2017046749A1

公开(公告)日：2017-03-23

申请号：PCT/IB2016/055522

申请日：2016-09-16

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN, Isto ,  BACKFOLK, Kaj ,  LYYTIKÄINEN, Katja

IPC: D21H27/30 ,  B32B29/00 ,  D21H11/18

CPC classification number: D21H11/18 ,  D21H27/30

Abstract: A method of manufacturing a film comprising microfibrillated cellulose,, wherein the method comprises the steps of: providing a first suspension comprising microfibrillated cellulose, having a dry content of from 0.2 to 2.0 %, wherein the first suspension has a first Schopper-Riegler (SR) value; forming a first web of said suspension; at least partly dewatering said first web; applying a second suspension comprising microfibrillated cellulose, and/or fines and/or fibers onto a surface of said formed and at least partially dried first web, wherein the second suspension has a second Schopper- Riegler value which is higher than said first Schopper-Riegler value, thereby forming a film.

Abstract translation: 一种制造包含微纤化纤维素的薄膜的方法，其中所述方法包括以下步骤：提供包含微纤化纤维素的第一悬浮液，其干燥含量为0.2-2.0％，其中第一悬浮液具有第一种Schopper-Riegler ）值 形成所述悬架的第一网; 至少部分地使所述第一纤维网脱水; 将包含微纤化纤维素和/或细粒和/或纤维的第二悬浮液施加到所述形成的和至少部分干燥的第一纤维网的表面上，其中第二悬浮液具有高于所述第一Schopper-Riegler的第二Schopper-Riegler值 值，从而形成膜。

公开(公告)号：WO2014174429A1

公开(公告)日：2014-10-30

申请号：PCT/IB2014/060890

申请日：2014-04-22

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN, Isto ,  SAUKKONEN, Esa ,  BACKFOLK, Kaj ,  KAUPPI, Anna ,  SAXELL, Heidi ,  LYYTIKÄINEN, Katja

IPC: D21H11/18 ,  D21H17/37 ,  C08B11/15 ,  D21H11/20 ,  D21H17/55

CPC classification number: D21H21/30 ,  C08L1/02 ,  C08L2205/16 ,  D21H11/04 ,  D21H11/18 ,  D21H17/375 ,  D21H17/42 ,  D21H21/28 ,  C08L33/26

Abstract: The invention relates to a process for treating cellulose fibres which process comprises the steps of providing a slurry comprising cellulose fibers, adding anionic polyacrylamide (A-PAM) with high molar mass to the slurry in a first step and subjecting the slurry comprising fibers and A-PAM to a mechanical treatment in a second step thereby forming a composition comprising microfibrillated cellulose. The invention further relates to a composition produced according to the process.

Abstract translation: 本发明涉及一种处理纤维素纤维的方法，该方法包括以下步骤：提供包含纤维素纤维的浆料，在第一步中向浆料中加入高摩尔质量的阴离子聚丙烯酰胺（A-PAM），并对包含纤维和A -PAM在第二步中进行机械处理，由此形成包含微纤化纤维素的组合物。 本发明还涉及根据该方法生产的组合物。

公开(公告)号：WO2021224840A1

公开(公告)日：2021-11-11

申请号：PCT/IB2021/053831

申请日：2021-05-06

Applicant: STORA ENSO OYJ

Inventor： BACKFOLK, Kaj ,  HEISKANEN, Isto ,  LYYTIKÄINEN, Katja

IPC: D21H19/08 ,  B05D3/00 ,  B32B15/12 ,  B32B15/20 ,  B32B29/06 ,  B82Y30/00 ,  C23C14/02 ,  C23C14/14 ,  C23C16/02 ,  C23C16/06 ,  D21H11/18 ,  B32B7/02 ,  C08J5/18 ,  C08L1/02

Abstract: The present invention is directed to a process for manufacturing a nano- coated pulp-based substrate comprising the steps of: a) providing a suspension comprising pulp, said pulp having Schopper Riegler value of at least 70°; b) using the suspension of step a) to form a wet web; c) dewatering and/or drying the wet web to form a substrate; d) reducing surface roughness of the substrate; providing a nano-coating on the surface of the substrate obtained in step d) such that a nano-coating having a thickness in the range of from 0.1 nm to 100 nm is provided on the substrate.

公开(公告)号：WO2021074879A1

公开(公告)日：2021-04-22

申请号：PCT/IB2020/059762

申请日：2020-10-16

Applicant: STORA ENSO OYJ

Inventor： BACKFOLK, Kaj ,  HEISKANEN, Isto ,  LYYTIKÄINEN, Katja ,  CUNHA, Gisela ,  NYLEN, Otto

IPC: C08J5/18 ,  C08L1/02 ,  C08L1/16 ,  D21H11/18 ,  D21H11/20

Abstract: The present invention relates to a microfibrillated cellulose (MFC) composition for preparation of transparent or translucent films or coatings, said composition comprising MFC at a concentration in the range of 50-99.9 wt%, and phosphorylated cellulose fibers at a concentration in the range of 0.1-50 wt%, based on the total dry weight of the MFC composition. The invention further relates to an MFC film and a multilayer material comprising the MFC composition.

公开(公告)号：WO2020128997A1

公开(公告)日：2020-06-25

申请号：PCT/IB2019/061182

申请日：2019-12-20

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN, Isto ,  LYYTIKÄINEN, Katja ,  CUNHA, Gisela ,  BACKFOLK, Kaj

IPC: C08J5/18 ,  B32B29/00 ,  B82Y30/00 ,  D21H11/18 ,  D21H17/66 ,  D21H19/10

Abstract: The present invention relates to a method for preparing a surface-treated fibrous material comprising phosphorylated nanocellulose, in which a fibrous material is surface treated with a solution comprising at least one multivalent metal ion followed by drying and post- curing to improve the barrier properties of the material. Fibrous materials as such are also provided.

公开(公告)号：WO2019123191A1

公开(公告)日：2019-06-27

申请号：PCT/IB2018/060159

申请日：2018-12-17

Applicant: STORA ENSO OYJ

Inventor： BACKFOLK, Kaj ,  HEISKANEN, Isto ,  SAUKKONEN, Esa ,  LYYTIKÄINEN, Katja

IPC: C08L1/02 ,  C08J5/18 ,  D21H11/18 ,  D21H17/28 ,  D21H17/32

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.

公开(公告)号：WO2022189958A1

公开(公告)日：2022-09-15

申请号：PCT/IB2022/052037

申请日：2022-03-08

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN, Isto ,  BACKFOLK, Kaj ,  LYYTIKÄINEN, Katja ,  MOBERG, Anders ,  KANKKUNEN, Jukka

IPC: D21H11/18 ,  C08J5/18 ,  C09D101/02 ,  D21H11/00 ,  D21H23/28 ,  B32B29/00 ,  D21F1/66

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：WO2022049482A1

公开(公告)日：2022-03-10

申请号：PCT/IB2021/057940

申请日：2021-08-31

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN, Isto ,  BACKFOLK, Kaj ,  KAUPPI, Anna ,  LYYTIKÄINEN, Katja ,  KANKKUNEN, Jukka ,  KORVENNIEMI, Juha

IPC: D21H11/18 ,  B32B29/02 ,  D21F11/08 ,  D21H27/30

Abstract: The present invention relates to a method for manufacturing a multilayer film comprising microfibrillated cellulose (MFC) in a paper-making machine, the method comprising the steps of: a) forming a bottom web layer by applying a first pulp suspension comprising at least 50% by dry weight of cellulose based fibrous material having an SR (Schopper-Riegler) value in the range of 18-75 on a bottom web wire; b) forming or applying an intermediate web layer formed from a second pulp suspension comprising at least 50% by dry weight of MFC having an SR value in the range of 80-100 on the bottom web layer; c) applying a top web layer formed from a third pulp suspension comprising at least 50% by dry weight of cellulose based fibrous material having an SR (Schopper-Riegler) value in the range of 18-75 on the intermediate web layer to form a multilayer web; and d) dewatering, and optionally drying, the formed multilayer web to obtain a multilayer film comprising MFC.