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1. (WO2018104330) CELLULOSE FIBERS

Pub. No.:    WO/2018/104330    International Application No.:    PCT/EP2017/081569
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Wed Dec 06 00:59:59 CET 2017
IPC: D01F 2/02
D21C 3/02
D21C 9/147
D01F 2/06
Applicants: RE:NEWCELL AB
Inventors: LINDSTRÖM, Mikael
LINDGREN, Christofer
HENRIKSSON, Gunnar
Title: CELLULOSE FIBERS
Abstract:
There is provided a cellulose based fiber made of a i) cellulose dissolving pulp, and ii) a recycled cellulose textile, which is treated to swell the cellulose with a reducing additive and a) bleached with oxygen at alkaline conditions with a pH in the range 9-13.5 and/or b) bleached with ozone at acid conditions below pH 6, wherein the cellulose based fiber is manufactured with one selected from a Viscose process and a Lyocell process. Advantages include that the tensile strength of the fiber is improved and it is possible to manufacture improved cellulose fibers which comprise a fraction of recycled material.