yarn. Friday , March 16th , 2018 - 02:30:47 AM
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.
Spun yarn is made by twisting staple fibres together to make a cohesive thread or "single."6 Twisting fibres into yarn in the process called spinning can be dated back to the Upper Paleolithic and yarn spinning was one of the very first processes to be industrialized. Spun yarns may contain a single type of fibre or be a blend of various types. Combining synthetic fibres (which can have high strength lustre and fire retardant qualities) with natural fibres (which have good water absorbency and skin comforting qualities) is very common. The most widely used blends are cotton-polyester and wool-acrylic fibre blends. Blends of different natural fibres are common too especially with more expensive fibres such as alpaca angora and cashmere.
Yarns combining synthetic and natural fibers inherit the properties of each parent according to the proportional composition. Synthetics are added to lower cost increase durability add unusual color or visual effects provide machine washability and stain resistance reduce heat retention or lighten garment weight.
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