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The beam dyeing machine is a large dye vat that consists of a perforated beam that an open width of fabric is wound around. The perforated beam sits within the dye beam carrier. The machine consists of a number of high pressure pumps that transfer the dye liquor in and out of the machine.
Winch machine is a high liquor dyeing machine operating at 1:20 (MLR) and a maximum temperature of 98 degrees Celsius. In a winch dyeing, the fabric remains in movement while the dye liquor stays stationary similar to a jigger but with lesser stress on the materials. Hence, suitable for delicate textures and fabric types such as knitted fabrics.
The fabric passes over rollers, immerses into a dye bath, and then proceeds through rollers that remove excess dye, allowing it to return to the dye container. [8] The difference between piece-dyeing in a vat and using a pad-dyeing machine is that in the latter, the fabric is continuously moved through one or more dye baths, rather than being ...
The machine may be equipped with a padding mangle, which is useful in squeezing excess moisture and applying various finishes [7] such as wrinkle-free, water repellent, waterproof, anti-static, or flame retardant. Coating and dyeing applications are also possible on a stenter machine with suitable padders and coating attachments.
Dyeing is commonly carried out with an anionic direct dye by completely immersing the fabric (or yarn) in an aqueous dye bath according to a prescribed procedure. For improved fastness to washing, rubbing and light, further dyeing methods can be used. These require more complex chemistry during processing, and are thus more expensive to apply.
A continuous bleaching range is a set of machines to carry out bleaching action. It consists of several compartments in which fabric moves from one side to another with the help of guide rollers and is treated with chemicals, heated, rinsed, and squeezed. Continuous bleaching is possible for the fabrics in open-width or rope form. [6] [7]
The names of the ageing machines include loop ager, festoon ager, cottage steamer, star steamer, and tower ager. Some machines are used for batch processing, while others are used for continuous processing; a loop ager is a continuous type of machine. [1] [9] In some cases, loop ager is also employed in polyester dyeing. [10]
Dyeing Pigments for sale at a market in Goa, India Cotton being dyed manually in contemporary India Silk dye in pan on stove. Khotan. Dyeing is the application of dyes or pigments on textile materials such as fibers, yarns, and fabrics with the goal of achieving color with desired color fastness.