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Dyeing: comprising the dyeing and bleaching of wool, silk, cotton, flax, hemp, china grass &c. (1888)

Sansone, Antonio · Manchester, Heywood · leaf 82

An illustration from Dyeing: comprising the dyeing and bleaching of wool, silk, cotton, flax, hemp, china grass &c., 1888, leaf 82 — rect steam; but forfiner work the yarn is either boiled in the kier with wateronly, or is properly scoured with soda ash, or better, causticsoda. The scouring is performed in the kier by taking 2 to 5 per cent, soda ash.or 1 to 3 per cent, caustic soda, and is followed by a thorough wash. In order… … 2 < <; o 2 oI > w H <; 0. PRACTICAL PROCESSES. 57 by string to form a long rope. The duration of the scouringis about one hour. After a thorough wash the scouredyarn is ready for dyeing. Cotton yarn is either dyed in the fomi of hank or in acontinuous manner in the form ofwarps, andthe…

Dyes and dyeing

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