Moisture Control of Backwash and Superwash lines
The International Wool Secretariat recommends the following method for drying Superwash sliver after it emerges from the treatment bowls.
Most processors use a Two Zone Dryer.
Both zones should be controlled by a Streat Moisture Controller.
The temperature in the first zone should not be allowed to rise above 60 degrees Celsius. Higher temperatures may 'shock' the fibre making it unworkable for future processing.
The target regain at the dryer exit should be 8-10% to ensure that adequate curing of the resin has occurred and also to give the best post-dryer gilling results