Wool Dyeing
Wool in its natural form has a neutral shade and has to be dye to obtain varied hues. In most cases, wool can be bleached or dye at any of the processing stages though it is commonly done after washing or when it is spun into yarn. Wool which is dyed at the yarn stage is referred to as yarn dye while stock dye wool is the name given to wool which is dye right after washing. Plant colors can be used for a natural dyeing process through chemical are the ones preferred for commercial applications. The dyes used for wool are chemically anionic in nature. Two factors that determine the rate of dying are the pH and the rate of increase in temperature of the dye bath liquor. Wool is said to be a dye or bleached successfully if one achieves the uniformity, correct shade, requirements of color fastness at minimum cost and least environmental damage on a consistent basis. There are several which go down well with wool fabric to develop colorfast finish in varied hues ranging from s...