CTD 261 Lecture 19: Chapter 12 part 1

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Interlacing yarns to make fabrics: example: the paper placemats you made in kindergarten. Definition of fabric: a woven, knitted, plaited, braided, or felt material such as cloth, lace, hosiery, etc, any cloth produced by joining fibers as by knitting, weaving, or felting, a planar structure consisting of yarns or fibers. Starting materials for fabrication: solutions: films and foams, fibers: felt and fiber webs or nonwovens, yarns: braid, knit, lace, woven, and many others, composite: fabrics combined together (bonded, laminated, quilted); fabrics combined with solutions, fibers, and yarns. Three principal ways of manufacturing fabrics (fabrication: weaving. Yarns are interloped: fiber bonding: non-woven fabrics, there are a large number of minor fabrication methods. Ex. braids, lace, films, foams, felt, leather, fur. Two sets of yarns (warp & filling) are interlaced at 90 degree angles. Firm and rigid due to right-angle positions of yarns: knit. Woven fabric composition: warp (ends): the yarns that run the length of the loom.

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