TXA 205 Lecture Notes - Lecture 6: Ramie, Embroidery Thread
10 Nov 2016
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Document Summary
Yarns are assemblies of fibers twisted or otherwise held together in a continuous strand. Used in smooth, lustrous fabrics or where high strength, compact yarns are needed. Fibers as long as the yarn and the fabric from which they are removed. Filament yarns that have gone through a texturizing process. Greater covering power or apparent volume compared to smooth filament yarn. Strength relative to cohesiveness of fiber and points of cohesion along the length. Opening- loosens, cleans, blends fibers: removes dirt and helps determine yarn quality. Combing-select yarns of high quality fibers (removes short fibers) Roving- reduces size of drawn silver, adds small amount of twist (blending happens here) Intimate mixture of different fibers in one yarn. One type of yarn used in one set of fabric yarns (i. e. warp) and another type used in another set (i. e. filling) Sewing thread: engineered to pass through a sewing machine, available in several sizes and structures, lubricant/wax finish.
