公开(公告)号：US11198973B2

公开(公告)日：2021-12-14

申请号：US16465426

申请日：2017-11-30

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

IPC: D21H11/18 ,  D21H17/68 ,  D21H17/29 ,  D21H17/55 ,  D21H17/45 ,  D21H23/04

Abstract: The present invention relates to a process wherein microfibrillated cellulose (MFC) is mixed with at least two retention aids, selected from a cationic or amphoteric polymer and a microparticle or nanoparticle as a pre-mix before dosing it to the stock in a process for manufacture of a fiber based product.

公开(公告)号：US11192987B2

公开(公告)日：2021-12-07

申请号：US16489801

申请日：2018-02-27

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

IPC: C08J5/18 ,  C08L1/02 ,  C08K3/36 ,  C08K3/34 ,  D21H17/68 ,  D21H11/18 ,  D21H21/52

Abstract: The present invention relates to a new process for improving runnability and dimensional stability when manufacturing a film comprising high amounts of microfibrillated cellulose (MFC) without negatively impacting the film properties. According to the present invention a high amount of nanoparticles is used as an additive, optionally together with a retention polymer.

公开(公告)号：US11161948B2

公开(公告)日：2021-11-02

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.

公开(公告)号：US11098452B2

公开(公告)日：2021-08-24

申请号：US16471990

申请日：2017-12-18

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Chris Bonnerup

IPC: D21H27/10 ,  B65D65/42 ,  D21H19/22 ,  D21H19/60 ,  D21H19/82

Abstract: The invention relates to a method of manufacturing a heat-sealable packaging material, the method comprising the steps of: providing a paperboard substrate comprising a top ply, applying a first dispersion barrier layer on the top ply, wherein the first dispersion barrier layer comprises a latex having a first glass transition temperature, and applying a second dispersion barrier layer on the first barrier layer, wherein the second dispersion barrier layer comprises a latex having a second glass transition temperature, wherein the second glass transition temperature is higher than the first glass transition temperature, wherein the grammage of the second dispersion barrier layer is lower than the grammage of the first dispersion barrier layer, and wherein the second dispersion barrier layer comprises pigments. The invention further relates to a respective heat-sealable packaging material.

公开(公告)号：US20210062418A1

公开(公告)日：2021-03-04

申请号：US16977159

申请日：2019-02-18

Applicant: Stora Enso OYJ

Inventor： Philip Håkansson ,  Kaj Backfolk ,  Isto Heiskanen

IPC: D21C9/00 ,  D21H11/18 ,  C04B16/02 ,  C08B15/08

Abstract: The invention discloses a method to form a composition, which method includes fibrillating fibers to form MFC in the presence of an alkali-metal silicate whereby an MFC and silicate mixture is formed The presence of alkali-metal silicate during fibrillation of fibers to MFC, reduces the viscosity and increases the water release behavior, whereby the fibrillation can be accomplished at higher concentrations and a more uniform mixture of MFC-silicate is accomplished. The composition formed by the method of the invention may e.g. be used in paper or paperboard production, in cement production or as an additive in composites.

公开(公告)号：US20210054570A1

公开(公告)日：2021-02-25

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 ,  D21H11/18 ,  D21H19/40 ,  D21H23/48 ,  D21H23/52 ,  D21H23/50 ,  D21H19/66

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：US20210017717A1

公开(公告)日：2021-01-21

申请号：US16955900

申请日：2018-12-19

Applicant: Stora Enso OYJ

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

IPC: D21H27/10 ,  D21H11/18 ,  D21H19/22 ,  D21H19/80 ,  B32B27/12 ,  B32B27/32 ,  B29C65/32 ,  B29C65/36 ,  B29C65/00

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：US20200010629A1

公开(公告)日：2020-01-09

申请号：US16489801

申请日：2018-02-27

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

IPC: C08J5/18 ,  C08L1/02 ,  C08K3/36 ,  C08K3/34 ,  D21H17/68 ,  D21H11/18 ,  D21H21/52

Abstract: The present invention relates to a new process for improving runnability and dimensional stability when manufacturing a film comprising high amounts of microfibrillated cellulose (MFC) without negatively impacting the film properties. According to the present invention a high amount of nanoparticles is used as an additive, optionally together with a retention polymer.

公开(公告)号：US20200008372A1

公开(公告)日：2020-01-09

申请号：US16489817

申请日：2018-02-27

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen ,  Elina Skerfe

IPC: A01G24/35 ,  A01G24/18 ,  A01G24/15 ,  A01G24/28 ,  A01G24/25 ,  A01G24/23

Abstract: The present invention is directed to a culture medium comprising a soilless substrate, microfibrillated cellulose and a hydrophilic or amphiphilic polymer. The present invention is particularly useful in soilless agriculture, such as for horticultural/agricultural use that is based on a soilless substrate such as mineral or glass wool. These types of culture media are often used in greenhouses but may also be used for outdoor horticulture or agriculture.

公开(公告)号：US20200002893A1

公开(公告)日：2020-01-02

申请号：US16465426

申请日：2017-11-30

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

IPC: D21H11/18 ,  D21H17/68 ,  D21H17/29 ,  D21H17/55 ,  D21H17/45 ,  D21H23/04

Abstract: The present invention relates to a process wherein microfibrillated cellulose (MFC) is mixed with at least two retention aids, selected from a cationic or amphoteric polymer and a microparticle or nanoparticle as a pre-mix before dosing it to the stock in a process for manufacture of a fiber based product.