Dyeing: A dyeing process is an interaction between a dye and a fibre, as well as the movement of dye into the internal part of the fibre. Textile dyeing is the process of applying colour evenly on the textile (fibre, yarn, fabric, or even garment). Depending on the requirement, textile dyeing can take place in …
Printing: The process of doing colouration on the specific area of the textile material (fabric) as per a pre-designed pattern. The main difference between dyeing and printing is, in case of printing, colour is applied to a localized area with desired patterns whereas, in the case of dyeing, it is applied to the entire textile. …
Process Flow-Chart for Wet-processing: Grey Textiles (fibre/yarn/fabric) 🔻 Pre-treatment (Singeing, De-sizing, Scouring, Bleaching, Mercerizing) 🔻 Coloration (Dyeing/Printing) 🔻 Finishing/ After treatments 🔻 Delivery to Subsequent Section (Garments) Dyes: Dyes/pigments are generally colouring materials for dyeing operation. There are various types of dyes & pigments for the coloration of textiles. Or, Dyes are colouring materials used in …
Colouring materials (Dyes/pigments) are generally coloring materials for dyeing operation. There are various types of dyes & pigments for the coloration of textiles. Properties of Dyes The four properties that dyes must possess are: Intense color In almost all cases solubility in on aqueous solution (either permanent or only during the dyeing operation) Ability to …
Nomenclature of a coloring material is of paramount importance and very interesting, a successful dyer must have some knowledge of it, which can also be obtained from manufacturer’s literature. There is no symmetric nomenclature system worldwide due to which it is usual to have various names assigned to a single dye by different manufacturers, called …
A dye has three parts in its structure – chromophore, chromogen and auxochrome. Dye = Chromophore + Chromogen + Auxochrome Chromophore Chromophore is an unsaturated group that absorbs light and reflects it at specific angle to give the hue, e.g., azo, keto, nitro, nitroso, thio, ethylene etc. So, the color bearing unsaturated group of a dye …