chloe. yarn. March 16th , 2018.
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.
In Europe textile engineers often use the unit tex which is the weight in grams of a kilometre of yarn or decitex which is a finer measurement corresponding to the weight in grams of 0 km of yarn. Many other units have been used over time by different industries.
In general natural fibers tend to require more careful handling than synthetics because they can shrink felt stain shed fade stretch wrinkle or be eaten by moths more readily unless special treatments such as mercerization or superwashing are performed to strengthen fix color or otherwise enhance the fiber own properties.
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