D - Textiles – Paper – 01 – F
Patent
D - Textiles, Paper
01
F
D01F 2/00 (2006.01) D01D 5/06 (2006.01) D01D 5/088 (2006.01)
Patent
CA 2175562
The invention is concerned with a process for the production of cellulose fibres, wherein a solution of cellulose in an aqueous tertiary amine-oxide is extruded into filaments through spinning holes of a spinneret and the extruded filaments are conducted across an air gap into a substantially aqueous precipitation bath, characterized in that the extruded filaments, while being conducted across the air gap, are contacted with an aliphatic alcohol which is present exclusively in gaseous state. The process according to the invention produces cellulose fibres having a very reduced tendency to fibrillation.
L'invention concerne un procédé de production de fibres de cellulose, selon lequel une solution de cellulose dans un oxyde d'amine tertiaire aqueux est extrudé par les trous d'une filière pour former des filaments. Les filaments extrudés sont guidés à travers une fente dans un bain de régénération sensiblement aqueux. Ce procédé se caractérise en ce que pendant le guidage des filaments extrudés à travers la fente, lesdits filaments sont mis en contact avec un alcool aliphatique, uniquement présent sous forme gazeuse. Ce procédé permet d'obtenir des fibres de cellulose dont la propension à la fibrillation est très faible.
Lenzing Aktiengesellschaft
Sim & Mcburney
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