AKZO's CELLULOSIC FILAMENT YARN FROM THE NMMO PROCESS (1993)
It is only recently that the suitability of the N-methyl morpholine oxide (NMMO) process for the production of filament yarns has been recognised. The three main steps of Akzo's NewCell NMMO technology consist of the production of a homogeneous solution from pulp, NMMO and water, the actual extrusion process and the recovery of the NMMO. The NMMO process is of a purely mechanical nature and uses the four physical steps of dissolving, extrusion and drying. Compared to viscose filament yarns NMMO fibres feature a superior single filament titre, greater dry and wet strength, and a better shrinking behaviour.
Kruger R., Paper presented at 32nd International Man-Made Fibres Congress held at Dornbirn, Austria, 22-24 Sept. 1993, 12pp The full paper can be seen here