Dyeing of 100 % cotton fabric using vat dyes by pad dye continuous method (Pad jig method).

Abstract:

The experiment was performed in textile processing laboratory. Dye solution was prepared according to the recipe and sample was padded through. Later color was developed by using jigger machine.

Introduction:

Vat dyes are predominantly used for dyeing cellulosic fibers and the cellulosic component in polyester/cellulosic blends. Dyeing with vats depends on converting the water-insoluble vat dye by reduction to the water-soluble leuco compound. This has substantivity for cellulose and is therefore absorbed by the fiber. After dyeing, the leuco compound is converted back to the original insoluble form by oxidation.