Its purpose is to sort out the different lengths of fibre, and to clear such fibres of their nibs and noils.
This fibre again yields combings which will also be combed, and so on for five or six times until the combings are too short, and are taken from the machine and known as noils.
The noils resulting from the dressing operations are sometimes combed, the comb used being similar to those used in the cotton trade.
The resulting sliver is used by silk spinners who make a speciality of spinning short fibres, and the exhaust noils are bought by those who spin them up into " noil yarns " on the same principle as wool.
The noils are also in great demand for mixing with wool to make fancy effects in wool cloths for the dress goods trade.
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