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The market for reactive dyes will continue to increase. This will arise partly from a marginal increase in the production of cellulosic fibres, essentially cotton, and more importantly from the replacement of other classes of cellulose dye, such as azoic and sulphur dyes, by reactive dyes.
People involved with colour and colour reproduction needed a unique and unambiguous specification of colour, leading to colours being expressed in numeric codes, which is explained in detail in this article like the perception of colours, the representation of colours, and other interesting semantics of it.
Majority of the textiles printed in the global market are printed with the screen printing technique due to its simplicity. The demand for screen printing in the packaging industry is significantly high with around 9% of the labels printed globally being screen printed.
When ‘colour’ is applied to a fabric it is termed as dyeing. Dyeing and printing of fabrics are usually done after routine or basic finishes but prior to the application of other finishes. It is mainly done to give color to the fabric and thus improve the appearance of the fabric.
The Dyes are classified based on the fibers to which they can be applied and the chemical nature of each dye. Dyes are complex unsaturated aromatic compounds fulfilling characteristics like intense color, solubility, Substantiveness, and fastness. Dyes can be defined as the different type of coloring particles which differ in each type from the other in chemical composition and are used for coloring fabrics in different colors and shades which are completely soluble in liquid media.
Dyeing can be performed using continuous or batch processes. Yarn dyeing is used to create interesting checks, stripes, and plaids with different-colored yarns in the weaving process. Substances which cause these changes are called dyestuffs.
Dyeing operations are used at various stages of production to add color and intricacy to textiles and increase product value. It chemically changes a substance so that the reflecting light appears colored.