2 Types of Colorants in Textile Industry | Texhour.com
Substances which are used to color textiles are called colorants and can be classified as pigments or dyes. Pigments are inert & water insoluble. They have no affinity for fiber and are physically fixed to the textile material using binders and resins.
Colorants and its Types
Substances which are used to color textiles are called colorants.
It can be classified as
1. Inert and water-insoluble
2. No affinity for textile fibers
1. Water soluble
2. Affinity for textile fibers
• Pigments are inert & water insoluble.
• They have no affinity for fiber and are physically fixed to the textile material using binders and resins.
• Pigments are available in a complete range of colors.
• Pigments provide a greater degree of certainty in color matching. Unlike dyeing, their application does not require any chemical or after-treatment process.
• Most textile printing is done using pigments.
• Dyeing involves a chemical bonding of the dyestuff with the textile material.
• Dyeing can be divided into
1. Chemical Dyeing
2. Natural Dyeing
Chemical dyeing is the most consistent, long-lasting method of coloring fabrics.
Natural dyeing tends to have varying results and does not last as long.
• In Dyeing, the color turns out depends upon,
1. How long the fabric is in contact with the dye
2. The temperature of the dyebath
3. The concentration of the color solution
• If a fabric is soaked in a concentrated dyebath for a long period of time at a hot temperature the dye-uptake will usually be brighter and more intense.
• If the color solution is diluted, the temperature is relatively cool and the fiber is not in contact with the dye for very long the result will be duller.