公开(公告)号：SE543676C2

公开(公告)日：2021-05-25

申请号：SE1950835

申请日：2019-07-03

Applicant: STORA ENSO OYJ

Inventor： HARLIN ALI ,  LAINE CHRISTIANE ,  KOSKELA HANNA ,  SETÄLÄ HARRI ,  KAMMIOVIRTA KARI ,  KETOJA JUKKA ,  HJELT TUOMO

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

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.

公开(公告)号：SE1950835A1

公开(公告)日：2021-01-04

申请号：SE1950835

申请日：2019-07-03

Applicant: STORA ENSO OYJ

Inventor： HARLIN ALI ,  LAINE CHRISTIANE ,  KOSKELA HANNA ,  SETÄLÄ HARRI ,  KETOJA JUKKA ,  KAMMIOVIRTA KARI ,  HJELT TUOMO

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

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.