公开(公告)号：US20220316135A1

公开(公告)日：2022-10-06

申请号：US17597272

申请日：2020-07-02

Applicant: Stora Enso OYJ

Inventor： Harri Setälä ,  Kari Kammiovirta ,  Christiane Laine ,  Ali Harlin ,  Tuomo Hjelt ,  Hanna Koskela ,  Jukka Ketoja

IPC: D21C9/00 ,  D21H11/20

Abstract: The present invention relates to a method for manufacturing modified cellulose fibers for a moldable 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 moldable cellulose fiber based material. The invention further relates to a moldable cellulose fiber based material comprising at least 70% by dry weight of modified cellulose fibers obtainable by the method.