Why Does Wool Shrink?

Answer

Wool does not shrink. The correct term is ?felt?. Wool is consists of fibres that catch on to one another. When spun, they come into close proximity with each other. When exposed to water, heat or friction, the fibres tighten their contact to each other. Consequently, the whole fabric tightens, in what is known as felting.
Q&A Related to "Why Does Wool Shrink"
Wool actually doesn't shrink per se - it felts. This felting usually occurs in the presence of heat, hot water and agitation - the conditions that exist in an operating clothes dryer
http://www.ehow.com/facts_7648794_wool-shrink-drye...
Wool does not shrink, it felts. This is caused by the raised scales of the cuticle layer of the wool fiber catching on one another. The fibers in a fleece on a sheep are all growing
http://wiki.answers.com/Q/What+is+shrink+proofing+...
Heat causes the cells of wool to lose the air between them and the scales to cling
http://www.chacha.com/question/why-does-wool-shrin...
Wool frizzes like fizzy hair when it gets wet so it sort of does shrink on a sheep but it is pulled out straight and wound when it is made into yarn. Then if you were to get it wet
http://answers.yahoo.com/question/index?qid=201104...
1 Additional Answer
Ask.com Answer for: why does wool shrink
Why Does Wool Shrink?
Wool is durable and attractive, making it a popular choice for both clothing and home decorations. But as anyone who has ever pulled a miniaturized sweater of the dryer knows, wool fabrics require special care to avoid shrinkage.... More »
Difficulty: Easy
Source: www.ehow.com
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