公开(公告)号：WO2021001779A1

公开(公告)日：2021-01-07

申请号：PCT/IB2020/056250

申请日：2020-07-02

Applicant: STORA ENSO OYJ

Inventor： SETÄLÄ, Harri ,  KAMMIOVIRTA, Kari ,  LAINE, Christiane ,  HARLIN, Ali ,  HJELT, Tuomo ,  KOSKELA, Hanna ,  KETOJA, Jukka

IPC: D21H11/20 ,  D21H11/02 ,  D21H11/16 ,  D21H15/04 ,  B29C51/08 ,  B31B50/59 ,  B65B43/08 ,  C08B1/08 ,  C08L1/02 ,  B29K2001/00 ,  B31F1/0077 ,  D21C9/002 ,  D21C9/004 ,  D21C9/005 ,  D21J1/00

Abstract: The present invention relates to a method for manufacturing modified cellulose fibers for a moidable cellulose fiber based material, said method comprising: a) providing a chemical or semi-chemical wood pulp comprising cellulose fibers, and optionally subjecting the pulp to alkaline extraction to obtain an alkaline extracted pulp; and b) subjecting the pulp or the alkaline extracted pulp of step a) to a chemical treatment with an alkaline solution and/or an organic solvent to obtain a treated pulp or treated alkaline extracted pulp comprising modified cellulose fibers for a moidable cellulose fiber based material. The invention further relates to a moidable cellulose fiber based material comprising at least 70% by dry weight of modified cellulose fibers obtainable by the method.

公开(公告)号：EP3994310A1

公开(公告)日：2022-05-11

申请号：EP20834914.2

申请日：2020-07-02

Applicant: Stora Enso Oyj

Inventor： SETÄLÄ, Harri ,  KAMMIOVIRTA, Kari ,  LAINE, Christiane ,  HARLIN, Ali ,  HJELT, Tuomo ,  KOSKELA, Hanna ,  KETOJA, Jukka

IPC: D21H11/20 ,  D21H11/02 ,  D21H11/16 ,  D21H15/04 ,  B29C51/08 ,  B31B50/59 ,  B65B43/08 ,  C08B1/08 ,  C08L1/02