公开(公告)号：US11598050B2

公开(公告)日：2023-03-07

申请号：US16345982

申请日：2017-10-26

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

IPC: D21H19/34 ,  D21H23/50 ,  D21H27/10 ,  D21J1/08

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：US11518858B2

公开(公告)日：2022-12-06

申请号：US16345994

申请日：2017-10-31

Applicant: Stora Enso OYJ

Inventor： Esa Saukkonen ,  Isto Heiskanen ,  Kaj Backfolk ,  Ville Ribu

IPC: C08J5/18 ,  D21H11/18 ,  D21H25/04 ,  C09D101/02 ,  B32B29/02 ,  D21H19/34 ,  D21H19/22

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/m2/24 h 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：US11155698B2

公开(公告)日：2021-10-26

申请号：US16314592

申请日：2017-06-27

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Esa Saukkonen ,  Kaj Backfolk

IPC: C08L1/02 ,  D21H11/18 ,  C09D101/02 ,  F26B13/00 ,  D21F11/00 ,  C08J5/18 ,  C08K5/00

Abstract: The present invention relates to a method for the production of a film comprising microfibrillated cellulose, wherein the method comprises the steps of; providing a suspension comprising microfibrillated cellulose, applying the suspension on a substrate to form a fibrous web, wherein the web has a first and a second side, conducting the web to a contact drying equipment wherein the first side of said web is in direct contact with of the contact drying equipment at a temperature above 100° C. whereby the web is at least partly dried forming a film. The invention also relates to a film produced according to the method.

公开(公告)号：US11001969B2

公开(公告)日：2021-05-11

申请号：US16316790

申请日：2017-07-03

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen ,  Kirsi Partti-Pellinen ,  Simo Siitonen

IPC: D21F11/00 ,  D21H17/28 ,  D21H21/36 ,  D21H21/56 ,  D21H19/22

Abstract: The present invention relates to a new process for creating foam in a process for manufacturing a paper or board product. According to the present invention, certain types of antimicrobial starch is used in the creation of the foam.

公开(公告)号：US20200239652A1

公开(公告)日：2020-07-30

申请号：US16757093

申请日：2018-10-17

Applicant: Stora Enso OYJ

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

IPC: C08J5/18 ,  D21H11/18 ,  D21H11/20 ,  D21H17/00 ,  D21H17/05 ,  D21H19/34 ,  D21H19/52 ,  C12N9/42 ,  C12N9/24

Abstract: The present invention relates to a method for manufacturing a film comprising microfibrillated cellulose wherein the method comprises the steps of; providing a suspension comprising a microfibrillated cellulose, adding an enzyme to the suspension, mixing the enzyme with the suspension to form a mixture, applying said mixture to a wire to form a fibrous web and drying said web to form said film. The present invention further relates to a film comprising microfibrillated cellulose having good barrier properties.

公开(公告)号：US20200171796A1

公开(公告)日：2020-06-04

申请号：US16500033

申请日：2018-03-28

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen ,  Jukka Kankkunen ,  Ville Ribu ,  Kimmo Nevalainen

IPC: B32B15/085 ,  B65D65/40 ,  B65D65/42 ,  B32B15/20 ,  B32B27/10 ,  D21H27/10 ,  D21H19/04 ,  D21H19/22 ,  D21H19/84 ,  D21H19/82 ,  D21H11/18 ,  C08J5/18

Abstract: The present invention is directed to a packaging material comprising a layer of microfibrillated cellulose (MFC) and an aluminum layer having a thickness of 0.1-20 μm, wherein the layer comprising MFC and/or the aluminum layer has been laminated or extrusion coated on at least one side with a thermoplastic polymer and wherein the amount of aluminum is sufficient to make the packaging material heat sealable by induction. The MFC layer contains at least 60% by weight of microfibrillated cellulose.

公开(公告)号：US20200056333A1

公开(公告)日：2020-02-20

申请号：US16345982

申请日：2017-10-26

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

IPC: D21H19/34 ,  D21H23/50 ,  D21H27/10 ,  D21J1/08

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：US11834793B2

公开(公告)日：2023-12-05

申请号：US16966527

申请日：2019-01-31

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen ,  Jukka Kankkunen ,  Anna Nyberg Zetterlund ,  Jan Lif

IPC: D21H23/28 ,  D21H11/08 ,  D21H23/48 ,  D21H23/50 ,  D21H23/52 ,  D21H19/40 ,  D21H19/66 ,  D21H11/18

CPC classification number: D21H23/28 ,  D21H11/18 ,  D21H19/40 ,  D21H19/66 ,  D21H23/48 ,  D21H23/50 ,  D21H23/52

Abstract: The present invention relates to a process for manufacturing a film comprising high amounts of microfibrillated cellulose (MFC), having haptic properties. According to the present invention, a wet web comprising MFC is formed, followed by addition of particles having an average diameter of at least 1 μm to the wet web, followed by dewatering and/or drying. The wet web may be formed for example by wet laid or cast forming methods. The particles may be added to the wet web for example by cast coating or spraying.

公开(公告)号：US11504956B2

公开(公告)日：2022-11-22

申请号：US16471983

申请日：2017-12-21

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Esa Saukkonen

IPC: D21F5/00 ,  B32B29/02 ,  D21C9/18 ,  D21H11/18 ,  D21H19/34 ,  D21H23/26

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, 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 micro fibrillated cellulose, applying the second suspension either to the first side of the fibrous web or to a surface of a drying equipment and conducting said fibrous web through the drying equipment whereby the second suspension is added 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：US20200325287A1

公开(公告)日：2020-10-15

申请号：US16096800

申请日：2017-04-26

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen ,  Jukka Kankkunen

IPC: C08J5/18 ,  B65D81/20

Abstract: The present invention is directed to a film comprising a base film which has been coated on at least one side with a coating that enhances gas and/or moisture barrier properties, wherein the base film comprises a fiber material and at least 60% by weight of said fiber material is microfibrillated cellulose, and the thickness of the coating is from 0.05 to 20 μm. The invention is also directed to products using said film. Such products are in particular packages suitable for sensitive objects that need to be packaged in a controlled or modified atmosphere. The film is also useful for other purposes, such as in the manufacture of balloons.