公开(公告)号：SE543324C2

公开(公告)日：2020-11-24

申请号：SE1751572

申请日：2017-12-19

Applicant: STORA ENSO OYJ

Inventor： SAUKKONEN ESA ,  HEISKANEN ISTO ,  BACKFOLK KAJ ,  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 100000 g/mol to said suspension to provide a mixture of said microfibrillated cellulose, said uncharged, amphoteric or weakly cationic polymer and said anionic polymer,- 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 solid content; and- dewatering said fibrous web to form a fibrous product.

公开(公告)号：SE542093C2

公开(公告)日：2020-02-25

申请号：SE1850222

申请日：2018-02-27

Applicant: STORA ENSO OYJ

Inventor： SAUKKONEN ESA ,  HEISKANEN ISTO ,  BACKFOLK KAJ

IPC: D21H23/48 ,  D21H11/18 ,  D21H19/10 ,  D21H19/34 ,  D21H23/02

Abstract: The present invention relates to a method for production of product comprising a first ply, the method comprising the steps of: providing a fibrous suspension comprising fibers ; providing said fibrous suspension to a porous medium to form a substrate comprising fibers; providing a first additive suspension comprising a first strengthening agent, wherein the first strengthening agent is microfibrillated cellulose; providing a second additive suspension comprising at least one retention agent and/or at least one drainage agent; dewatering said substrate on said porous medium; performing additive addition to said substrate during said dewatering of said substrate on said porous medium, wherein the additive addition is performed when the substrate has a dry content of less than 20 weight-%, preferably less than 10 weight-%, most preferably less than 7 weight-%, and wherein the additive addition comprises adding at least a layer of said first additive suspension and a layer of said second additive suspension to said substrate by means of multilayer curtain coating, and further dewatering and drying said substrate after said dewatering on said porous medium so as to provide said first ply. The invention also relates to a paper, board or non-woven product obtainable by the method.

公开(公告)号：SE541435C2

公开(公告)日：2019-10-01

申请号：SE1651432

申请日：2016-10-31

Applicant: STORA ENSO OYJ

Inventor： SAUKKONEN ESA ,  HEISKANEN ISTO ,  BACKFOLK KAJ

IPC: D21H11/18 ,  B29C33/56 ,  B29C33/60 ,  B65D1/00 ,  D21J3/00 ,  D21J5/00 ,  D21J7/00

Abstract: The present invention relates to a new process for providing a coating layer on a moulded article comprising fibers. In the present invention, a coating dispersion is prepared that comprises microfibrillated cellulose (MFC), a slip aid and at least one hydrocolloid.

公开(公告)号：CA3081813A1

公开(公告)日：2019-06-27

申请号：CA3081813

申请日：2018-12-19

Applicant: STORA ENSO OYJ

Inventor： BACKFOLK KAJ ,  HEISKANEN ISTO ,  SAUKKONEN ESA ,  KANKKUNEN JUKKA

IPC: B32B27/12 ,  B29C65/02 ,  B32B27/08 ,  B32B27/32 ,  C08J5/18 ,  D21H11/18

Abstract: The present invention is directed to a packaging material free from aluminium in the form of a continuous foil or film, comprising a layer of microfibrillated cellulose (MFC), wherein the layer comprising MFC has been laminated or coated on at least one side with a heat-sealable material. The MFC layer contains at least 60% by weight of microfibrillated cellulose. The present invention is also directed to a method for induction sealing, wherein a packaging material to be heat-sealed by induction is placed against an induction heating surface.

公开(公告)号：SE1751595A1

公开(公告)日：2019-06-22

申请号：SE1751595

申请日：2017-12-21

Applicant: STORA ENSO OYJ

Inventor： SAUKKONEN ESA ,  HEISKANEN ISTO ,  KANKKUNEN JUKKA ,  BACKFOLK KAJ

IPC: B32B27/08 ,  B29C65/02 ,  B32B27/12 ,  B32B27/32 ,  C08J5/18 ,  D21H11/18

Abstract: The present invention is directed to a packaging material free from aluminium in the form of a continuous foil or film, comprising a layer of microfibrillated cellulose (MFC), wherein the layer comprising MFC has been laminated or coated on at least one side with a heat-sealable material. The MFC layer contains at least 60% by weight of microfibrillated cellulose. The present invention is also directed to a method for induction sealing, wherein a packaging material to be heat-sealed by induction is placed against an induction heating surface.

公开(公告)号：SE1751572A1

公开(公告)日：2019-06-20

申请号：SE1751572

申请日：2017-12-19

Applicant: STORA ENSO OYJ

Inventor： SAUKKONEN ESA ,  HEISKANEN ISTO ,  BACKFOLK KAJ ,  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 100000 g/mol to said suspension to provide a mixture of said microfibrillated cellulose, said uncharged, amphoteric or weakly cationic polymer and said anionic polymer,- 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 solid content; and- dewatering said fibrous web to form a fibrous product.

公开(公告)号：CA3068941A1

公开(公告)日：2019-01-10

申请号：CA3068941

申请日：2018-07-02

Applicant: STORA ENSO OYJ ,  WETEND TECH OY

Inventor： SAUKKONEN ESA ,  HEISKANEN ISTO ,  BACKFOLK KAJ ,  MATULA JOUNI ,  MATULA JUSSI

IPC: D21C9/00 ,  B01F23/00 ,  B01F23/47 ,  B01F33/80 ,  D21H11/18 ,  D21H11/20 ,  D21H23/04 ,  D21H23/14

Abstract: A method of dosing a nanocellulose suspension in gel phase into a second suspension, wherein the method comprises the steps of: providing said nanocellulose suspension in gel phase; providing said second suspension; bringing said nanocellulose suspension in gel phase in contact with said second suspension;wherein the method comprises a step of subjecting said nanocellulose suspension in gel phase to a shear rate of more than 500 1/s, simultaneously with and/or immediately prior to the step of bringing said nanocellulose suspension in gel phase and said second suspension in contact with each other.

公开(公告)号：CA3041963A1

公开(公告)日：2018-05-11

申请号：CA3041963

申请日：2017-10-31

Applicant: STORA ENSO OYJ

Inventor： SAUKKONEN ESA ,  HEISKANEN ISTO ,  BACKFOLK KAJ ,  RIBU VILLE

IPC: C08J5/18 ,  B32B29/02 ,  D21H11/18 ,  D21H19/34 ,  D21H25/04

Abstract: A method of forming a film comprising nanocellulose having an Oxygen Transmission Rate (OTR) value in the range of 0,1 to 300 cc/m2/24h at 38°C and 85 % relative humidity (RH), and having a basis weight in the range of in the range of 0,1 to 45 g/m2 wherein the method comprises the steps of; providing a suspension comprising nanocellulose, forming at least one layer of a web or a film from said suspension; drying said formed web or film to a dry content of at least 65 weight-%, wherein said method further comprises the steps of; treating at least one side of said dewatered and dried web or film with ultra violet (UV) or electron beam (EB) irradiation; and wherein at least one cooling step is provided in connection with or after the UV or EB treatment step.

公开(公告)号：CA3040623A1

公开(公告)日：2018-05-03

申请号：CA3040623

申请日：2017-10-27

Applicant: STORA ENSO OYJ

Inventor： BACKFOLK KAJ ,  HEISKANEN ISTO ,  SAUKKONEN ESA

IPC: D21H11/18 ,  D21H17/03 ,  D21H17/20 ,  D21H17/70 ,  D21H23/02

Abstract: The invention discloses a method to enable the efficient use of surfactants in web forming of a cellulose containing material, e.g. in the making of paper or paperboard. The method comprises the addition of microfibrillated cellulose (MFC) or nanocrystalline cellulose (NCC) to the white water in a web-forming process in order to form complexes with surface active agents. The formed complexes are at least partly recycled to the process. This enables the producer to have control over the concentration of surface active agents in the system.

公开(公告)号：CA3027321A1

公开(公告)日：2018-01-18

申请号：CA3027321

申请日：2017-07-03

Applicant: STORA ENSO OYJ

Inventor： BACKFOLK KAJ ,  HEISKANEN ISTO ,  SAUKKONEN ESA ,  LAMPAINEN SEPPO ,  SIITONEN SIMO ,  ANDERSSON MARIANNE

IPC: B65D81/26 ,  A23B7/14 ,  A23B7/157 ,  A23L3/34 ,  B01J20/02 ,  B01J23/40 ,  B65D65/42 ,  C08B15/08 ,  C08L1/02 ,  D21H11/18

Abstract: The present invention relates to a material suitable for use in packages comprising nano-sized cellulose and an ethylene scavenging or ethylene absorbing agent. The invention also relates to methods for manufacturing such material, which may be paper, label, paperboard, plastic or film products.