what is cupro
CUPRO \Â¦k(y)ueËprÅ\. Ã¼ËprÅ. n 1: A a regenerated cellulose fiber derived from cotton (linter the, ultrafine silky fibers that stick to the seeds of the cotton plant afterâit s been) ginned that has been dissolved in a solution of ammonia and copper. oxideo me, cupro/rayon/viscose processing cancels out the benefits of using cotton waste. says: April 7, 2012 at 7:06 am. If you only look at the fibre part (so not making a fabric out of it) then according to Made-by itâs benchmark for fibres it is as bad as conventional cotton.