The manufacturing processes are listed in the accompanying chart, which indicates the two major differences in production. Triacetate is produced in both processes, but to make acetate, the solution is hydrolyzed (treated with water and aged) which causes some hydroxyl groups to reform. Triacetate is dissolved in a different solvent and acetate in a different solution.

b. Unbalanced Yarns: Crepe and textured surface may be created from unbalanced yarns. 4.3 DIRECTION OF TWIST: In addition to the amount of twist in a yarn, the direction of the twist is also designated. There are two types of yarn twist S and Z.