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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.
The method was frequently modified until now it is capable of producing the finest diameter of any of the rayons. 1. Cotton linters afford the greatest purity and are the preferred source cellulose. These fibers are cleansed by cooking in a mild caustic alkali and bleached with chlorine.
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