Wool
Wool is the fiber derived from the hair of domesticated animals, usually sheep. Most of the fiber from domestic sheep has two qualities that distinguish it from hair or fur: it is scaled in such a way that helps the animal move out burrs and seeds that might embed themselves into its skin; and it is crimped, in some fleeces more than 20 bends per inch.Both the scaling and the crimp make it possible to spin and felt the fleece. They help the individual fibers "grab" each other so that they stay together. They also make the product retain heat, as they trap heat in their bends.
Hair, by contrast, has little if any scale and no crimp and little ability to bind into yarn. On sheep, the hair part of the fleece is called kemp. The relative amounts of kemp to wool vary from breed to breed, and make some fleeces more desireable for spinning, felting or carding into batts for quilts or other insulating products.
Wool is processed into clothing, carpeting, felt, and padding. As the raw material has been readily available since the widespread domestication of sheep and similar animals, the use of wool for clothing and other fabrics dates back to some of the earliest civilizations. Wool takes dye easily and can be felted.
Wool straight off a sheep is highly water resistant. It is said to be "in the grease," the grease being lanolin, and can be worked into yarn and knit into water-resistant mittens, as did the Aran Island fishermen. Wool retains heat better than most fabrics when wet. Australia and New Zealand are leading producers of wool.
The spinning capacity of wool is determined by the technique known as wool classing, whereby a qualified woolclasser might group wools of similar gradings together to maximise the return for a farmer wishing to yeild the most from the sheep's fleeces.
See also:
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