Key Role of Leveling Agents and Wetting Agents in Textile Dyeing Industry
The market acceptance of the fabric depends on the fabric appeal (comfort). Fabrics are not just intermingling of yarns but they are product of precise manufacturing process where the processer faces hurdles in form of complex designs, shade variations, manufacturing defects, variation from standard etc. Dyeing is a process of colouring fibres, yarns, or fabrics with either natural or synthetic dyes. This colouring is done by use of wet and dry processing techniques. In case of wet processing, textile material is coloured by bringing it in contact with the dye solution. Some of the key parameters affecting the dyeing process are surface tension, capillary effect, surface unevenness, polar action etc.
Non-uniform patchy dyeing occurs due to: Substrate deformity Poor processing conditions Incorrect dye stuff selection
Hence to overcome this hurdles, dyeing & leveling chemicals like levelling agent, dispersing agents along with wetting agents are used.