公开(公告)号：US20150308017A1

公开(公告)日：2015-10-29

申请号：US14441263

申请日：2013-10-30

Applicant: Stora Enso Oyj

Inventor： Kaj Backfolk ,  Heidi Saxell ,  Isto Heiskanen ,  Lars Axrup ,  Cecilia Land Hensdal ,  Veikko Jokela ,  Esa Saukkonen ,  Ari Kotilainen ,  Henri Kastinen ,  Anna Kauppi

IPC: D01F2/00

CPC classification number: D01F2/00 ,  C08L1/04 ,  D21C9/007 ,  D21C9/06 ,  D21C9/18 ,  D21H11/18 ,  F26B3/36

Abstract: A method for drying nanofibrillated polysaccharide to obtain a substantially dry nanofibrillated polysaccharide product, comprising the following steps: (i) providing an aqueous suspension of nanofibrillated polysaccharide; (ii) increasing the solid content of said suspension, thereby forming a high solid content microfibrillated cellulose suspension; and (iii) drying said high solid content microfibrillated cellulose suspension, through a simultaneous heating and mixing operation.

Abstract translation: 一种干燥纳米纤维化多糖以获得基本干燥的纳米纤维化多糖产物的方法，包括以下步骤：（i）提供纳米纤维化多糖的水性悬浮液; （ii）增加所述悬浮液的固体含量，从而形成高固体含量的微纤化纤维素悬浮液; 和（iii）通过同时加热和混合操作来干燥所述高固含量微纤化纤维素悬浮液。

公开(公告)号：US11479915B2

公开(公告)日：2022-10-25

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

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：US10900169B2

公开(公告)日：2021-01-26

申请号：US14421708

申请日：2013-08-16

Applicant: STORA ENSO OYJ

Inventor： Isto Heiskanen ,  Cecilia Land Hensdal ,  Lars Axrup ,  Heidi Saxell

IPC: D21C9/00 ,  D21H11/18 ,  D21C5/00 ,  D21C9/18 ,  C08L1/02 ,  C12P19/04 ,  C12P19/14 ,  D21H17/00 ,  D21H17/67

Abstract: A method for the production of highly refined or microfibrillated cellulose (MFC), comprising the steps of treating cellulosic fibres to remove at least a major part of the primary wall of the fibres, drying the treated fibres, rewetting the treated fibres, and disintegrating the wetted fibres by mechanical means to obtain the final product. Dried cellulosic pulp is produced as an intermediate product of the method, having an average fibre length of at least 0.4 mm, while less than 50% of the primary wall material of natural untreated fibres is left in the intermediate product. Instead of transporting large amounts of dilute MFC dispersion the invention enables transport of the dry intermediate product to the MFC end user, who would complete the process by turning the intermediate product to final MFC by use of standard disintegrating devices.

公开(公告)号：US20210017671A1

公开(公告)日：2021-01-21

申请号：US16955910

申请日：2018-12-20

Applicant: Stora Enso OYJ

Inventor： Gisela Cunha ,  Heidi Saxell

IPC: D01F2/30 ,  D01D5/00 ,  D01D5/04 ,  D04H3/015 ,  D01D5/06 ,  C08B5/00 ,  D03D15/00 ,  A61L15/28

Abstract: A method is provided for preparing a fibrous material (preferably a mat or filaments) of crosslinked microfibrillated cellulose. Phosphorylated microfibrillated cellulose is spun into a fibrous material; and then said fibrous material is post-treated (e.g. by heat-treatment) to provide crosslinking between the phosphorylated microfibrillated cellulose. Fibrous materials such as filaments or mats, and hygiene products comprising such materials are also described.

公开(公告)号：US20200340183A1

公开(公告)日：2020-10-29

申请号：US16955916

申请日：2018-12-20

Applicant: Stora Enso OYJ

Inventor： Gisela Cunha ,  Heidi Saxell

IPC: D21H11/20 ,  D21H11/18 ,  D21C9/00 ,  D21H27/00 ,  A61L15/28

Abstract: A method is provided for preparing a film of crosslinked microfibrillated cellulose. Phosphorylated microfibrillated cellulose is cast or wet-laid into a film; and then said film is post-treated (e.g. by heat-treatment) to provide crosslinking between the phosphorylated microfibrillated cellulose. Films and hygiene products comprising such films are also described.

公开(公告)号：US20200339783A1

公开(公告)日：2020-10-29

申请号：US16955921

申请日：2018-12-20

Applicant: Stora Enso OYJ

Inventor： Gisela Cunha ,  Heidi Saxell

IPC: C08L1/02 ,  D21H11/18 ,  D21H11/20 ,  D21C9/00 ,  C08J5/24 ,  C07C45/30 ,  D04H3/015 ,  D01F2/24

Abstract: A method is provided for preparing a fibrous material of crosslinked microfibrillated cellulose. Dialdehyde microfibrillated cellulose is spun into a fibrous material; said fibrous material is pre- or post-treated (by reduction of pH) to provide crosslinking between the dialdehyde microfibrillated cellulose. Fibrous materials such as filaments or mats, and polymer composites comprising such materials are also described.

公开(公告)号：US20150299959A1

公开(公告)日：2015-10-22

申请号：US14441268

申请日：2013-11-06

Applicant: STORA ENSO OYJ

Inventor： Lars Axrup ,  Heidi Saxell ,  Veikko Jokela ,  Henri Kastinen ,  Anna Kauppi ,  Kaj Backfolk ,  Nina Ruohoniemi ,  Risto Laitinen ,  Isto Heiskanen ,  Teija Laukala

IPC: D21H17/67 ,  D21H11/18

CPC classification number: D21H17/675 ,  C08B15/02 ,  C08K3/26 ,  C08K2003/265 ,  C08L2205/16 ,  D21H11/18 ,  D21H17/24 ,  D21H17/64 ,  D21H17/67 ,  C08L1/04

Abstract: A method for the production of a composite material comprising nanofibrillated polysaccharide, the method comprising the following steps: (i) providing a liquid suspension of the nanofibrillated polysaccharide; (ii) bringing said liquid suspension in contact with at least one additive, thereby forming a composite material suspension, wherein the composite comprises the nanofibrillated polysaccharide and the at least one additive, (iii) increasing the solid contents of said composite material suspension, thereby forming a high solid contents composite material suspension.

Abstract translation: 一种制备包含纳米纤维化多糖的复合材料的方法，所述方法包括以下步骤：（i）提供纳米纤维化多糖的液体悬浮液; （ii）使所述液体悬浮液与至少一种添加剂接触，从而形成复合材料悬浮液，其中复合材料包含纳米纤维化多糖和至少一种添加剂，（iii）增加所述复合材料悬浮液的固体含量，从而 形成高固体含量的复合材料悬浮液。

公开(公告)号：US20150218757A1

公开(公告)日：2015-08-06

申请号：US14421708

申请日：2013-08-16

Applicant: STORA ENSO OYJ

Inventor： Isto Heiskanen ,  Cecelia Land Hensdal ,  Lars Axrup ,  Heidi Saxell

IPC: D21H17/00 ,  D21H17/67 ,  D21H11/18

CPC classification number: D21H17/74 ,  C08L1/02 ,  C08L2205/16 ,  C12P19/04 ,  C12P19/14 ,  D21C5/005 ,  D21C9/002 ,  D21C9/005 ,  D21C9/007 ,  D21C9/18 ,  D21H11/18 ,  D21H17/005 ,  D21H17/675

Abstract: A method for the production of highly refined or microfibrillated cellulose (MFC), comprising the steps of treating cellulosic fibres to remove at least a major part of the primary wall of the fibres, drying the treated fibres, rewetting the treated fibres, and disintegrating the wetted fibres by mechanical means to obtain the final product. Dried cellulosic pulp is produced as an intermediate product of the method, having an average fibre length of at least 0.4 mm, while less than 50% of the primary wall material of natural untreated fibres is left in the intermediate product. Instead of transporting large amounts of dilute MFC dispersion the invention enables transport of the dry intermediate product to the MFC end user, who would complete the process by turning the intermediate product to final MFC by use of standard disintegrating devices.

Abstract translation: 一种用于生产高度精制或微纤化纤维素（MFC）的方法，包括以下步骤：处理纤维素纤维以去除纤维的主壁的至少主要部分，干燥经处理的纤维，再处理经处理的纤维，以及分解 润湿纤维通过机械手段获得最终产品。 干纤维素浆是作为该方法的中间产物生产的，其平均纤维长度至少为0.4mm，而少于天然未处理纤维的初级壁材料的50％留在中间产品中。 代替运输大量稀释的MFC分散体，本发明使得能够将干燥的中间产物运输到MFC最终用户，MFC最终用户将通过使用标准的分解装置将中间产物转化成最终的MFC来完成该方法。