公开(公告)号：US10752741B2

公开(公告)日：2020-08-25

申请号：US16302813

申请日：2017-05-15

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Katja Lyytikäinen ,  Esa Saukkonen ,  Kaj Backfolk

IPC: C08J5/18 ,  A61K8/73 ,  A61Q17/04 ,  C08J5/04 ,  C09D5/32 ,  D21H11/02 ,  D21H11/08 ,  D21H11/18 ,  D21H21/16 ,  D21H19/34 ,  C08L1/02 ,  D21H19/52 ,  D21H11/12 ,  A61K8/02 ,  D21H19/38 ,  D21H21/14 ,  D21H17/67 ,  D21H11/10

Abstract: The present invention relates to an UV blocking film comprising microfibrillated cellulose wherein at least part of the microfibrillated cellulose is microfibrillated cellulose produced from non-chemical modified lignocellulosic material. The invention also relates to a method for producing the film, use of said film as well as a composition having UV blocking properties.

公开(公告)号：US10577747B2

公开(公告)日：2020-03-03

申请号：US15754870

申请日：2016-09-16

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk

IPC: D21H11/18 ,  D21H21/20 ,  D21H17/32 ,  D21H17/37 ,  B32B27/10 ,  D21H21/10 ,  D21H17/22 ,  D21H17/28 ,  D21H17/24 ,  D21H17/31

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：US10435842B2

公开(公告)日：2019-10-08

申请号：US15758963

申请日：2016-09-16

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Esa Saukkonen

IPC: D21H11/18 ,  D21H21/16 ,  D21H19/10 ,  D21H19/36 ,  D21H17/26 ,  D21H17/57

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 microfibrillated 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 range of 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：US20190292337A1

公开(公告)日：2019-09-26

申请号：US16302813

申请日：2017-05-15

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Katja Lyytikäinen ,  Esa Saukkonen ,  Kaj Backfolk

IPC: C08J5/18 ,  C08J5/04 ,  D21H11/18 ,  D21H21/16 ,  D21H11/08 ,  D21H11/02 ,  C09D5/32 ,  A61K8/73 ,  A61Q17/04

Abstract: The present invention relates to an UV blocking film comprising microfibrillated cellulose wherein at least part of the microfibrillated cellulose is microfibrillated cellulose produced from non-chemical modified lignocellulosic material. The invention also relates to a method for producing the film, use of said film as well as a composition having UV blocking properties.

公开(公告)号：US10358772B2

公开(公告)日：2019-07-23

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: D21H11/18 ,  D21H17/28 ,  C08L1/02 ,  D21H21/56 ,  D21H19/34 ,  D21H19/54 ,  C09D101/02 ,  C09D103/02 ,  C09D7/40 ,  C09D103/04 ,  D21H21/06 ,  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：US20180371316A1

公开(公告)日：2018-12-27

申请号：US15779179

申请日：2016-11-25

Applicant: STORA ENSO OYJ

Inventor： Kaj Backfolk ,  Risto Kallio ,  Carl-Mikael Tag

IPC: C09K17/52 ,  D21H21/16 ,  D21H21/20 ,  D21H21/28 ,  D21H21/36 ,  D21H17/67 ,  D21H17/00 ,  D21H17/60 ,  D21H17/01 ,  D21H19/38 ,  C05G3/00 ,  A01G13/02

Abstract: A ground cover in the form of a mulch, allowing air and moist to permeate, which includes a paper substrate originating from fibre-bearing pulp, preferably emanating from lignocellulosic material, which has been web-formed or sheet-formed, characterized in that the substrate has been impregnated with supercritical fluid, preferably CO2, alternatively a fluid under high pressure such as near supercritical conditions, wherein also one or more colorant(s) is (are) present in said fluid. Also a method for its manufacture and use thereof are disclosed.

公开(公告)号：US20180245286A1

公开(公告)日：2018-08-30

申请号：US15754692

申请日：2016-09-16

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Kaj Backfolk ,  Katja Lyytikainen

IPC: D21H11/18 ,  D21H27/30

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.

公开(公告)号：US20170067208A1

公开(公告)日：2017-03-09

申请号：US15309286

申请日：2015-05-06

Applicant: STORA ENSO OYJ

Inventor： Kaj Backfolk

IPC: D21H13/12 ,  D21H13/14 ,  D21H17/37 ,  D21H17/35 ,  D21H17/53 ,  D21H17/28 ,  D21H17/70 ,  D21H13/24

CPC classification number: D21H13/12 ,  D21H13/14 ,  D21H13/24 ,  D21H17/28 ,  D21H17/35 ,  D21H17/37 ,  D21H17/53 ,  D21H17/675 ,  D21H17/70 ,  D21H17/71

Abstract: A method for forming a thermoplastic composite material in a papermaking machine, wherein the method comprises the steps of: forming an aqueous fiber material suspension; bringing said fiber suspension in contact with at least one additive, said additive being introduced into said fiber suspension, whereby said additive reacts to form a precipitation product onto or into the fibers, thereby forming an intermediate suspension, introducing, after the formation of the intermediate suspension, a plastic material into said intermediate suspension, thereby forming a plastic fiber composite suspension.

Abstract translation: 一种在造纸机中形成热塑性复合材料的方法，其中所述方法包括以下步骤：形成水性纤维材料悬浮液; 使所述纤维悬浮液与至少一种添加剂接触，所述添加剂被引入所述纤维悬浮液中，由此所述添加剂反应以在纤维上或纤维中形成沉淀产物，从而形成中间体悬浮液，在中间体形成之后引入 将塑料材料悬浮在所述中间体悬浮液中，从而形成塑料纤维复合悬浮液。

公开(公告)号：US20160060815A1

公开(公告)日：2016-03-03

申请号：US14786449

申请日：2014-04-22

Applicant: STORA ENSO OYJ

Inventor： Isto Heiskanen ,  Esa Saukkonen ,  Kaj Backfolk ,  Anna Kauppi ,  Heidi Saxell ,  Katja Lyytikainen

IPC: D21H21/30 ,  D21H11/04 ,  D21H21/28 ,  C08L1/02 ,  D21H17/37

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：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.