Patent ID: 6042769
Filing Date: 2000-03-28
Classification: D01F,D04H,D21H

Abstract:
A process for the manufacture of lyocell fibre comprising the steps of:(1) dissolving cellulose in a solvent to form a solution,(2) extruding the solution through a die to form a plurality of filaments,(3) washing the filaments to remove the solvent, thereby forming lyocell fibre, the cellulose in the lyocell fibre having a first Degree of Polymerisation, and(4) reducing the Degree of Polymerisation of the cellulose in the lyocell fibre to a second Degree of Polymerisation, said second Degree of Polymerisation being at least 200 units less than said first Degree of Polymerisation, whereby the resulting fibre displays an increased tendency to fibrillation as compared to the lyocell fibre of step (3).