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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 dye to fabric on a continuous basis rather on a batchwise process. Uses less energy and water that batchwise processes in principle but there are long periods of time when the...
A 3 tone effect that changes with the angle of view. It is achieved by using a warp yarn of one color and double weft yarns of 2 different colors. It is often found in taffetas, poplins or failles of...
The process where garments or part garments are dyed after manufacture (garments are made up). This enables the client to make late decisions about the colours that can be used, which means it can be...
Fabrics made from only one set of yarns, all running in the same direction. Some knits have their yarns running along the length of the fabric, while others have their yarns running across the width...
It is a type of cloth in which different colours of weft replace one another in succeeding horizontal sections of a design. Thus a figure is formed in more colours than there are series of weft...

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