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What is "Heavy metal free dyes" - Definition & Explanation

Heavy metal free refers to dyes that do not require the use of heavy metals to achieve the fixation of colors. Toxic heavy metals, such as chrome, copper and zinc, which are all known carcinogens, are commonly used as fixers in dyes. And, although most heavy metals can be removed from the effluent through wastewater treatment, this often does not occur.

Some other terms

Some more terms:

The process of applying heat and moisture to fabrics. Steaming is used to fix dyes applied in continuous dyeing processes and printing. It is also used to 'fix' fabrics such as wool and silk and can...
A loose shirt-like garment, worn by women mostly in Gujarat and Rajasthan. The garment was generally worn with short, wide sleeves, open at the neck, loose-fitting on the upper part and really flared...
Is stronger than Plain Weave. Each weft wire alternatively crosses over two, then under two warp wires. Twill weave is usually used to accomodate a heavier than standard wire diameter in association...
Heavy metal free refers to dyes that do not require the use of heavy metals to achieve the fixation of colors. Toxic heavy metals, such as chrome, copper and zinc, which are all known carcinogens,...
A technique of altering yarns to make them fluff, curl, or crimp up to give them a bulked appearance. High bulk yarns are sometimes made by combining high shrinkage staple components with low...

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