公开(公告)号：US20220389658A1

公开(公告)日：2022-12-08

申请号：US17755338

申请日：2020-11-04

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Katja Lyytikäinen ,  Otto Nylén ,  Kaj Backfolk

IPC: D21H11/18 ,  D21H21/16 ,  D21H19/12 ,  D21H19/82 ,  D21H17/14

Abstract: A barrier material comprising (a) at least one layer of cellulosic substrate comprising MFC, and (b) a first barrier layer arranged on at least one surface of said cellulosic substrate, is provided, as well as a method for reducing the water vapour transmission rate (WVTR) of a cellulosic substrate.

公开(公告)号：US20220325003A1

公开(公告)日：2022-10-13

申请号：US17595989

申请日：2020-06-18

Applicant: Stora Enso OYJ

Inventor： Gisela Cunha ,  Kaj Backfolk

IPC: C08B1/00 ,  A61K8/73

Abstract: Hornificated microfibri Mated cellulose (MFC) particles are provided, which are useful as an abrasive material in personal care products. Personal care products comprising such particles are also provided.

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.

公开(公告)号：US20220228319A1

公开(公告)日：2022-07-21

申请号：US17658308

申请日：2022-04-07

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

IPC: D21H11/18 ,  D21H13/08 ,  D21H13/10 ,  D21H17/28 ,  D21H17/33 ,  D21H17/68 ,  D21H21/10 ,  D21H21/18 ,  D21H21/52 ,  D21H23/48

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：US11319672B2

公开(公告)日：2022-05-03

申请号：US16975786

申请日：2019-02-25

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

IPC: D21H11/18 ,  D21H13/08 ,  D21H13/10 ,  D21H17/28 ,  D21H17/33 ,  D21H17/68 ,  D21H21/10 ,  D21H21/18 ,  D21H21/52 ,  D21H23/48

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：US20220064390A1

公开(公告)日：2022-03-03

申请号：US17454112

申请日：2021-11-09

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

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

Abstract: A film comprising microfibrillated cellulose, nanoparticles, and a retention polymer. The nanoparticles are nanosilica nanoparticles that are anionic at neutral or alkaline pH and have at least one dimension less than 100 nm; and the retention polymer is starch. 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：US20210222369A1

公开(公告)日：2021-07-22

申请号：US17056220

申请日：2019-05-14

Applicant: Stora Enso OYJ

Inventor： Tuula Sokka ,  Kaj Backfolk

IPC: D21H19/38 ,  D21H19/40 ,  D21H21/30 ,  D21H23/24 ,  D21H19/60 ,  D21H19/58 ,  D21H19/54 ,  D21H19/82 ,  D21H19/46 ,  D21H21/28

Abstract: The present invention relates to a coating composition for coating of paper or paperboard, said composition comprising: a pigment, a binder, an optical brightening agent (OBA), and xylitol, and to paper or paperboard coated with at least one layer of the coating composition. The present invention further relates to a method for preparing said coating composition and to an OBA premix useful in the method of preparing the coating composition, said premix comprising an OBA and xylitol, wherein the OBA and sugar alcohol together make up at least 10% by weight, preferably at least 20% by weight, based on the total weight of solids in the premix.

公开(公告)号：US20200332469A1

公开(公告)日：2020-10-22

申请号：US16958249

申请日：2018-12-20

Applicant: Stora Enso OYJ

Inventor： Åsa Nyflött ,  Chris Bonnerup ,  Magnus Ekberg ,  Kaj Backfolk

IPC: D21H21/16 ,  D21H19/40 ,  D21H19/22 ,  D21H19/56 ,  D21H19/38 ,  D21H19/82 ,  D21H19/84 ,  D21H27/10

Abstract: The present invention discloses a paperboard for packaging of liquid and frozen food, comprising a dispersion coating as the only barrier layer on its outside/print side. It has surprisingly been found that a dispersion coating comprising latex and pigment applied on the outside/print side of a paperboard for liquid and/or frozen food may serve as the only barrier against moisture arising from condensation.

公开(公告)号：US20190292727A1

公开(公告)日：2019-09-26

申请号：US16316864

申请日：2017-07-03

Applicant: Stora Enso OYJ

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

IPC: D21H13/04 ,  D21H11/18 ,  C08B11/12 ,  C08B15/04

Abstract: The present invention relates to a method for manufacturing an intermediate product that can be stored and transported and efficiently converted into microfibrillated cellulose with limited energy input at the time of conversion. More specifically, the invention involves the use of dewatered carboxymethylcellulose or carboxylated cellulose fiber having a low degree of substitution and a high amount of additives.

公开(公告)号：US20190248988A1

公开(公告)日：2019-08-15

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 ,  C08J5/18 ,  C08K5/00

CPC classification number: C08L1/02 ,  C08J5/18 ,  C08J2301/02 ,  C08K5/0025 ,  C08L2203/16 ,  C08L2312/00 ,  C09D101/02 ,  D21F11/00 ,  D21H11/18 ,  F26B13/00

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.