Wool :- (Part 2)
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Wool:-
Slubbing is often left unwashed, or else is given a light washing and rinse. Yarn normally contains lubricants which have been added to assist spinning. To avoid curling during the scouring operation, yarn is usually set under tension in hank form in boiling water. Wool pieces are often scoured in a dolly machine, which is a wooden trough containing surfactant and soda ash and fitted with heavy squeeze rollers. A trough underneath leads away dirty liquor.
