chloe. yarn. May 29th , 2018.
Synthetic fibers come in three basic forms: staple tow and filament. Staple is cut fibers generally sold in lengths up to 20mm. Tow is a continuous "rope" of fibers consisting of many filaments loosely joined side-to-side. Filament is a continuous strand consisting of anything from filament to many. Synthetic fiber is most often measured in a weight per linear measurement basis along with cut length. Denier and Dtex are the most common weight to length measures. Cut-length only applies to staple fiber.
Cotton and polyester are the most commonly spun fibers in the world. Cotton is grown throughout the world harvested ginned and prepared for yarn spinning. Polyester is extruded from polymers derived from natural gas and oil. Synthetic fibers are generally extruded in continuous strands of gel-state materials. These strands are drawn (stretched) annealed (hardened) and cured to obtain properties desirable for later processing.
Other natural fibers that can be used for yarn include linen and cotton. These tend to be much less elastic and retain less warmth than the animal-hair yarns though they can be stronger in some cases. The finished product will also look rather different from the woollen yarns. Other plant fibers which can be spun include bamboo hemp corn nettle and soy fiber.
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