Color Control of Carpet Dyeing.

A large amount of carpet is made from space-dyed yarn or is continuouly dyed in the piece. In either case, the dye recipe(s) are made in bulk in a tank and fed to the fiber during the production run. There is an opportunity to check the ingredients of each batch of dye by colorimetric means before the dye is applied and correct any variations from the desired amounts. Although measurement of soluble dyes in solution is a well understood method, it is not in widespread use to check batches of mixed dyes. It is presumed that known techniques are too time-consuming or that the results are not sufficiently accurate. Successful color control can be achieved with adequate precision if newly developed solution-measuring equipment and time-saving methods are used to support the production of dyed material . [ABSTRACT FROM AUTHOR]