Wool Processing Oils Available to Purchase

THE GENERAL principles of yarn production from loose textile fibres are much the same whatever the fibre. First, they are freed from impurities (e.g., wool scouring and carbonization) then mixed and blended. This is followed by attenuation and further mixing by combination of laps or slivers, followed by still more attenuation (carding) to ensure uniformity in fibre material. To eliminate very short fibres and ensure that in the sliver the fibres are all within certain length limits, further processes are employed such as gilling in worsted yarn manufacture. Further parallelization of fibres is obtained by combing (worsted yarn) and by repeated drawing or drafting until a degree of twist is necessarily introduced to continue holding the fibres together. The sliver then becomes known as roving and in this form the uniform fibre is twisted into yarn on spinning machines.