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Cotton can be dyed with a variety of dyes, although reactive dye is the most prevalent. Active groups in these dyes form covalent bonds with cotton's hydroxy groups through substitution and/or addition. The CPB method doesn't use salt or energy to dye, which makes it easier to use, less expensive, and more environmentally friendly than ...
The jigger dyeing machine is a large closed dye vat with two main rollers located in the top half of the machine. The fabric is wound onto one roller and then fed onto the other. The dye liquor is located at the bottom of the dye vat below the two main rollers, it is specially designed to require a low liquor ratio.
The Progress of Cotton. Barfoot's series of coloured lithographs of 1840 depicting the cotton manufacturing process. Spinning the Web, Manchester Libraries: Darton. p. 12; Miller, Ian; Wild, Chris (2007). A & G Murray and the Cotton Mills of Ancoats. Lancaster: Oxford Archaeology North. ISBN 978-0-904220-46-9.
Cotton is shipped to mills in large 500-pound bales. When the cotton comes out of a bale, it is all packed together and still contains vegetable matter. The bale is broken open using a machine with large spikes, called an opener. To fluff up the cotton and remove the vegetable matter, the cotton is sent through a picker or a similar machine.
Cotton is an absorbent fibre which responds readily to colouration processes. Dyeing is commonly carried out with an anionic direct dye by completely immersing the fabric (or yarn) in an aqueous dyebath according to a prescribed procedure. For improved fastness to washing, rubbing, and light, other dyes such as vats and reactives are commonly ...
Reactive dyes are by far the best choice for dyeing cotton and other cellulose fibers at home or in the art studio. Disperse dyes were originally developed for the dyeing of cellulose acetate, and are water-insoluble. The dyes are finely ground in the presence of a dispersing agent and sold as a paste, or spray-dried and sold as a powder.
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aal Aal or Indian mulberry (Morinda tinctoria) is the source of the morindone dye sold under the trade name "Suranji". It is extensively cultivated in India for the dyeing of cotton, silk and wool in shades of red, chocolate or purple, dependent on the mordant used.
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