Textile processing is a general term that covers right from singeing (protruding fiber removal) to finishing and printing of fabric. The various steps a fabric goes into are singeing, desizing, bleaching, dyeing, and finishing. Bleaching is a process to make the fabric or yarn look brighter and whiter. Dyeing is a process of applying coloring matter directly on fiber without any additives. Finishing is the final process to impart the required end use finishes to the fabric and lastly the printing process on fabric which is a science as well as an art. Textile auxiliaries such as chemicals are used for all stages of the textile manufacturing process that is from pre-treatment to dyeing and printing and finishing.
Dyeing is a method for colouring a textile material in which a dye is applied to the substrate in a uniform manner to obtain an even shade with a performance and fastness appropriate to its final use. A dyestuff is a molecule which contains a chromophoric group (conjugated system) capable of interacting with light, thus giving the impression of colour.
Dyeing is what happens when different colors and shades of colors are applied to fabric. The fabric is dyed during a variety of stages of manufacturing such as dyeing the fiber or strings of yarn before it becomes an article of clothing, or dyeing pieces of fabric before it is sewn into a finished product. And, dyeing can even occur after the product is completely finished. The success of the dyeing process all relies on the type of dye chosen for each piece of fabric, and the method that is chosen for the fabric, yarn, or even the fiber.
Dyeing is one of the most important part in the textile manufacturing industry. Various types of fabric coloration are performed in dyeing section based on the requirements and demand of the buyer. Lots of traditional dyeing processes are running industrially in different manufacturing unit to dye the fabric. Different dyeing factories perform different dyeing process.