Rayon is known by the names viscose rayon and art silk in the textile industry.
From the en.wikipedia.org
The first commercial viscose rayon was produced by the UK company Courtaulds Fibers in 1905.
From the en.wikipedia.org
In the continuous filament industry, polyester or polyamide yarns are always dyed at package form, while viscose rayon yarns are partly dyed at hank form because of technology.
From the en.wikipedia.org
Less appealing from a green point of view because producing rayon, aka viscose, is a highly polluting activity.
From the guardian.co.uk
The first artificial fibre, known as art silk from 1799 onwards, became known as viscose around 1894, and finally rayon in 1924.
From the en.wikipedia.org
High-tenacity rayon is another modified version of viscose that has almost twice the strength of HWM.