Patent · US Expired

Process for the manufacture of cellulose fibres

US5863478A · kind A · utility

9Cited by

3References

7Claims

0Family size

Assignee

LENZING AKTIENGESELLSCHAFT · AT

Inventors

Hartmut Ruf · Rötteln, DE
Christoph Schrempf · Eferding, AT

Key dates

Filing date	Oct 30, 1997
Grant date	Jan 26, 1999
Priority date	—
Expiry date	Oct 30, 2017

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01F2/00
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The invention is concerned with a process for the production of cellulose fibers wherein a solution of cellulose in a tertiary amine-oxide is extruded through spinning holes of a spinneret, whereby filaments are extruded, the extruded filaments are conducted across an air gap, a precipitation bath and a drawing device whereby the filaments are drawn, the drawn filaments are further processed into cellulose fibers, the drawn filaments being exposed during further processing to a tensile stress in longitudinal direction not exceeding 5.5 cN/tex.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.