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.

公开(公告)号：US20190276621A1

公开(公告)日：2019-09-12

申请号：US16461897

申请日：2017-11-16

Applicant: Stora Enso OYJ

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

IPC: C08J5/18 ,  D21H11/18 ,  D21H25/04

Abstract: Method for making a film that comprises microfibrillated cellulose, wherein the film has low OTR values and especially suitable for a tropical environment. The method comprising the steps of providing a suspension comprising microfibrillated cellulose (MFC), forming a film from said suspension, wherein the film having a solid content above 40%, preferably above 50%, treating the film with flame or plasma treatment, such that a surface activation takes place on the film, and cooling the film, wherein the surface of the film having a decreased OTR value and a high moisture resistance.

公开(公告)号：US20190040582A1

公开(公告)日：2019-02-07

申请号：US16075715

申请日：2017-02-17

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Esa Saukkonen

IPC: D21H15/02 ,  D21H17/67 ,  D21H17/68 ,  D21H21/28 ,  D21F11/02 ,  D21H19/10 ,  D21H17/35 ,  D21H27/10 ,  B65D65/38 ,  B65D85/10

Abstract: A sheet having dead-fold properties, wherein said sheet comprises cellulose fibers whereof at least 75%, preferably at least 90%, or more preferably at least 95% of said cellulose fibers have a fiber length of less than 1 mm, and wherein the tensile strength ratio (MD/CD) of the film is above 1.4, preferably higher than 1.6 and most preferably higher than 1.8.

公开(公告)号：US11999132B2

公开(公告)日：2024-06-04

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 ,  B32B15/20 ,  B32B27/10 ,  B65D65/40 ,  B65D65/42 ,  C08J5/18 ,  D21H11/18 ,  D21H19/04 ,  D21H19/08 ,  D21H19/22 ,  D21H19/82 ,  D21H19/84 ,  D21H27/10

CPC classification number: B32B15/085 ,  B32B15/20 ,  B32B27/10 ,  B65D65/40 ,  B65D65/42 ,  C08J5/18 ,  D21H11/18 ,  D21H19/04 ,  D21H19/08 ,  D21H19/22 ,  D21H19/824 ,  D21H19/84 ,  D21H27/10 ,  B32B2307/7244 ,  B32B2439/70 ,  C08J2323/06

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：US11555275B2

公开(公告)日：2023-01-17

申请号：US16614164

申请日：2018-05-17

Applicant: Stora Enso OYJ

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

IPC: D21H11/18 ,  B32B5/06 ,  B32B23/06 ,  B32B23/08 ,  D21H25/04 ,  B82Y30/00

Abstract: A method of manufacturing a film having an oxygen transmission rate (OTR) value in the range of 0.1 to 200 cc/m2*24 h at 23° C., 50% relative humidity (RH), and an OTR value in the range of 0.1 to 2000 cc/m2*24 h at 38° C. at 85% RH, comprising at least 60% by weight nanocellulose based on the weight of the total amount of fibers in the film, wherein the method comprises the steps of, providing an aqueous suspension comprising said nanocellulose; forming a web from said aqueous suspension; calendering said web at a line load of at least 40 kN/m, and at a temperature of at least 60° C. wherein said film is formed and said web has an OTR value in the range of 50 to 10 000 cc/m2*24 h at 23° C., 50% RH before said calendering step, or more preferably in the range of 500 to 5000 cc/m2*24 h at 23° C., 50% RH before said calendering step.

公开(公告)号：US11459159B2

公开(公告)日：2022-10-04

申请号：US16316729

申请日：2017-07-03

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen ,  Seppo Lampainen ,  Simo Siitonen ,  Marianne Andersson

IPC: B65D81/26 ,  A23B7/157 ,  A23L3/358 ,  B01J20/02 ,  B01J20/28 ,  B01J20/30 ,  B01J20/32 ,  B65D65/42 ,  C08L1/02 ,  D21H19/02 ,  D21H21/22 ,  D21H11/18 ,  C08B15/08 ,  D21H27/10 ,  A23B7/14 ,  B01J20/26 ,  B01J20/24 ,  A23L3/34

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.