yarn. Thursday , May 31st , 2018 - 07:28:02 AM
Protein yarns (i.e. hair silk feathers) may also be irritating to some people causing contact dermatitis hives wheezing or other reactions. Plant fibers tend to be better tolerated by people with sensitivities to the protein yarns and allergists may suggest using them or synthetics instead to prevent symptoms. Some people find that they can tolerate organically grown and processed versions of protein fibers possibly because organic processing standards preclude the use of chemicals that may irritate the skin.
Other animal fibers used include alpaca angora mohair llama cashmere and silk. More rarely yarn may be spun from camel yak possum musk ox cat dog wolf rabbit or buffalo hair and even turkey or ostrich feathers. Natural fibers such as these have the advantage of being slightly elastic and very breathable while trapping a great deal of air making for a fairly warm fabric.
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.
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