The three basic classifications of textile yarn include staple fiber yarn, which uses mostly short natural fibers to make yarn; ply yarns, which involve one or more strands of staple fiber yarn wound together; and filament yarn, which is wound from one or more long continuous filaments.
Why is yarn itchy?
Smooth wool vs.
The itch you feel when you use coarse wool happens when the ends of the wool fiber rub against your skin. It can cause itching and sometimes even make your skin to break out in a rash. Yuck! A coarse wool likely has shorter fibers that stick out, rubbing more against your skin.
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