Cupro cellulosic fibre was first produced commercially in Germany in 1908.

Production
Cotton cellulose is first bleached by boiling in an alkaline solution. This is then dissolved in a mixture of copper oxide and ammonia (the cuprammonium solvent). The blue viscous liquid is pumped through the spinneret into a spinning tube in which weak alkaline water is flowing. This water flow stretches the filaments before they are dried and wound up.

Properties and End-Uses
Cupro fibres have a good drape and are easy to wash. The main production is in filament yarn form for woven fabrics, largely for linings.