Muhammad Shahzad Textile Dyeing& Printing Govt. College Of Technology Samanabad,Faisalabad

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Classification of Dyes No single class of dye can dye all fibers.

Dyes for Cellulosic Fibers: Direct Dyes Sulphur dyes Vat Dyes Reactive Dyes

Introduction to Coloration & Finishing Dye Class General description Main application DirectSimple application; cheap; complete colour range; Mainly used for cellulosic fibers; like, cotton, can also be applied on rayon, silk & wool.

DIRECT DYES YellowPinkBrown Turquois e OrangeRedVioletBlack FushiaGreyGreen Forrest Green ScarletBlueWine China Blue

Introduction to Coloration & Finishing Classification of dyes Dye Class General description Main application Sulphur Difficult to apply (reduced dyeing with sodium sulphide ); cheap particularly for dark shade; Mostly used for heavy cellulosic/cotton goods in dark shades.

Classification of dyes Dye Class General description Main application Vat Difficult to apply (reduced with sodium hydorsulphite); most expensive; incomplete colour range. Commonly used for high quality cotton goods, like, towel, curtain.

Introduction to Coloration & Finishing VAT DYES Color range YELLOWGREEN ORANGEOLIVE B REDBROWN BLUENAVY VIOLETBLACK

Introduction to Coloration & Finishing Classification of dyes Dye Class General descriptionMain application Reactive Easy application; moderate price; complete colour range; good fastness due to direct reaction with fibres. Commonly used for all cellulosic/cotton goods especially in knitted and woven fabrics..

12 REACTIVE DYES Cold water fiber reactive dyes, suitable for dyeing on cotton, silk, jute, rayon.Cannot be used on synthetics fabrics Yellow 2GL Golden Yellow 2RL Orange 2R Scarlet Red BG (primary) Red 4B (bluish red) Red 8B (magenta) Rubinole 5B Brilliant Blue 2R Brilliant Blue BL Violet 2R Turquoise 2G Navy GRL Brown 2R Brilliant Green BL Black B (blue base) Black 2B

2004 Colour Formulation Colour match recipes are first developed on a small laboratory basis.

How to use Grey Scale

Common Colour Fastness: washing, light exposure, dry cleaning, perspiration rubbing (crocking).