TMD 103G Study Guide - Midterm Guide: Coir, Sisal, Lyocell
8 Jan 2019
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Staple: short in length (ex: cotton and wool) Filament: very long and continuous (ex: silk, manufactured bers) You can always cut bers to make them shorter. Length of ber contributes to appearance of yarn and fabric. Smoother with longer; fuzzy look with short bers. All bers in these categories have the same polymers and are expected to chemically react in similar ways. Plants: can get bers directly from plants. Stems (bast bers): ax, hemp, jute, ramie. Cotton is a big one (25+% of all world"s ber) Geographical constraints/advantages (where/when it can be grown; weather conditions) Is used in 50% of apparel and home fabrics. Di erent varieties have lengths ranging from short to medium to long. But long is still about 1. 5 inches. Most is medium upland cotton 3/4-1 1/8 inches. Cotton harvesting: picked (seed cotton, ginned- removing seeds from picked cotton, baled (raw cotton, clean enough for spinning into yarn.
