CTD 215 Lecture Notes - Lecture 10: Ring Spinning, Plying, Lyocell

• School: University of Alabama
• Department: Clothing, Textiles and Interior Design
• Course: CTD 215
• Professor: Dr.Thompson

Document Summary

Spinning systems: spinning systems: produce a yarn based on fiber characteristics of fiber. Surface contour: ring spinning: standard by which all spun yarns are rated. Cotton system: staple less than 2. 5 inches, opening picker: trash and dirt removed and fibers separated. A: carding (cid:498)lap(cid:499) is formed: flat, fairly uniform layer of fibers, blending can take place here. Layer pulled into (cid:498)sl)ver(cid:499: combing: this is an optional step. Smoother, superior yarns result: drawing: several card slivers combined for uniformity. Fibers made more parallel: redrawing, roving: twisting, silver attenuated (drawn out to finer diameter) and twisted. Yarn: less regular in size and appearance. Fabric: may become baggy in areas of stress. Yarn: more regular in size and appearance. Spinning: single yarns, either combed or carded, may be combined with twisting two or more together, to produce plied yarns, the ply twist is usually opposite the yarn twist.