公开(公告)号：CA3157414A1

公开(公告)日：2021-05-14

申请号：CA3157414

申请日：2020-11-04

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN ISTO ,  LYYTIKAINEN KATJA ,  NYLEN OTTO ,  BACKFOLK KAJ

IPC: D21H11/18 ,  B32B27/06 ,  B32B29/02 ,  B65D65/40 ,  B82Y30/00 ,  C08L29/04 ,  C09D101/00 ,  C09D101/02 ,  C09D103/00 ,  C09D105/00 ,  C09D129/04 ,  D21H19/00 ,  D21H19/10 ,  D21H19/12 ,  D21H19/20 ,  D21H19/34 ,  D21H19/82

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：CA3157325A1

公开(公告)日：2021-05-14

申请号：CA3157325

申请日：2020-11-04

Applicant: STORA ENSO OYJ

Inventor： BACKFOLK KAJ ,  BONNERUP CHRIS ,  HEISKANEN ISTO ,  LYYTIKAINEN KATJA

IPC: C09D101/28 ,  B32B23/06 ,  B32B27/10 ,  B32B29/00 ,  C08L1/28 ,  D21H19/12 ,  D21H19/34 ,  D21H19/52 ,  D21H21/16

Abstract: A method for reducing the surface oil absorption of cellulose based substrate is provided, in which a coating composition is applied to said substrate; and in which the coating composition comprises carboxymethyl cellulose (CMC) and/or a salt of carboxymethyl cellulose (CMC). A coated paperboard, and a laminate of the coated paperboard with a polymer layer is also provided. The coating composition provides improved surface oil absorption and improved adherence of an overlying polymer layer.

公开(公告)号：CA3123789A1

公开(公告)日：2020-06-25

申请号：CA3123789

申请日：2019-12-20

Applicant: STORA ENSO OYJ

Inventor： HEISKANEN ISTO ,  LYYTIKAINEN KATJA ,  CUNHA GISELA ,  BACKFOLK KAJ

IPC: C08J5/18 ,  B32B29/00 ,  B82Y30/00 ,  D21H11/18 ,  D21H17/66 ,  D21H19/10

Abstract: The present invention relates to a method for preparing a surface-treated fibrous material comprising phosphorylated nanocellulose, in which a fibrous material is surface treated with a solution comprising at least one multivalent metal ion followed by drying and post- curing to improve the barrier properties of the material. Fibrous materials as such are also provided.

公开(公告)号：CA3062603A1

公开(公告)日：2018-11-22

申请号：CA3062603

申请日：2018-05-17

Applicant: STORA ENSO OYJ

Inventor： SAUKKONEN ESA ,  HEISKANEN ISTO ,  LYYTIKAINEN KATJA ,  BACKFOLK KAJ

IPC: C08J5/18 ,  B82Y30/00 ,  D21H11/18 ,  D21H25/04

Abstract: A method of manufacturing a film having an oxygen transmission rate (OTR) value in the range of 0.1 to 200 cc/m2*24h at 23°C, 50 % relative humidity (RH), and an OTR value in the range of 0.1 to 2000 cc/m2*24h 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*24h at 23°C, 50 % RH before said calendering step, or more preferably in the range of 500 to 5000 cc/m2*24h at 23°C, 50 % RH before said calendering step.

公开(公告)号：CA3030090A1

公开(公告)日：2018-01-18

申请号：CA3030090

申请日：2017-07-03

Applicant: STORA ENSO OYJ

Inventor： BACKFOLK KAJ ,  HEISKANEN ISTO ,  SAUKKONEN ESA ,  LYYTIKAINEN KATJA ,  SAXELL HEIDI

IPC: D21H11/18 ,  C08B11/12 ,  C08B15/04 ,  C08L1/02 ,  D21C9/00 ,  D21C9/18

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.