Fabric Dye Assignment Example | Topics and Well Written Essays - 500 words

Fabric Dye - Assignment Example Apart from these materials, a host of other process chemicals are included. These are; acids such as formic and acetic, alkalis such as sodium carbonate, NaOH and potassium hydroxide, bleaches such as sodium chlorite, sodium hypo chlorite and hydrogen peroxide, dyes such as pigment, disperse and vat, salts such as sodium chloride, stabilizers from sodium nitrate, sodium silicate and organic stabilizers, auxiliary finishes such as softener and fire retardant. There are various methods that are used for textile dyeing. First there is application of color by use of various techniques of dyeing for various kinds of fiber and at various phases of the textile production procedure. These techniques include; stock dyeing, direct dyeing, yarn dyeing, top dyeing, piece dyeing, dope dyeing, piece dyeing, garment dyeing and solution pigmenting (Smith, McClure, 2003). There following are processes that are generally used when dyeing textile materials; batch and continuous, semi-continuous, and pigment dyeing process. Batch dyeing process is also known as exhaust dyeing and is the most common and popular technique for dyeing textile materials. The word exhaust is used to refer to this technique since this process allows dye to be transferred gradually from a moderately huge volume dye bath to the material being dyed. It also takes a longer time. Thus the dye is intended to ‘exhaust’ starting from the dye bath to the material. In this technique, textile materials can be readily dyed at any phase during their assembling into the preferred textile product which comprises of yarn, fiber, garment or fabric. Some of the machines used in batch dyeing process can perform at temperatures of 1000 0 C. Batch dyeing technique can be optimized by; first replacing conservative overflow-flood rinsing techniques with processes like drain and fill or use of other techniques such as smart rinsing (especially for fabrics), suitable recycling of rinsed water fo the subsequent