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Textile Dyeing

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Textile Dyeing
Dyeing & Printing
Classification of Dyes, Application of Dyes on Textile Materials, Introduction to Different types of Dyeing Machineries

Dyeing & Printing Title of Contents
1.0. 2.0. 3.0. Introduction to Textile Dyeing Classification of Dyes Dyeing Process 3.1. 3.2. 3.3. 3.4. 3.5. 3.6. 3.7. 3.8. 3.9. 3.10. 3.11. 3.12. 4.0. Dyeing Methods Comparison of Dyeing in Various Stages Special Dyeing Effects Application of Dyes on Textile Materials Direct Dyes Azoic Colors Reactive Dyes Vat Dyes Acid Dyes Basic Dyes Sulphur Dyes Disperse Dyes 03 05 07 07 09 10 11 11 12 15 20 25 28 29 30 31

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Introduction to Different Dyeing Machineries

Dyes, Theory of Dyeing, Classification of Dyes and its application

Dyeing & Printing
1.0. Introduction to Textile Dyeing

3

Dyeing is the process of imparting colours to a textile material in loose fibre, yarn, cloth or garment form by treatment with a dye. Dyeing is also the process of coloring textile materials by immersing them in an aqueous solution of dye, called dye liquor. Normally the dye liquor consists of dye, water and an auxiliary. To improve the effectiveness of dyeing, heat is usually applied to the dye liquor. 1.1. Color – Definition Color or colour is the visual perceptual property corresponding in humans to the categories called red, green, blue and others. Color derives from the spectrum of light (distribution of light energy versus wavelength) interacting in the eye with the spectral sensitivities of the light receptors. Color categories and physical specifications of color are also associated with objects, materials, light sources, etc., based on their physical properties such as light absorption, reflection, or emission spectra. By defining a color space, colors can be identified numerically by their coordinates. Because perception of color stems from the varying sensitivity of different types of cone cells in the retina to different parts of the spectrum, colors may be defined and quantified by

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