Method for randomly coloring textile yarns in a batch system
OwnerJ. B. Clevelandinventor
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Abstract
A method for producing randomly dyed skeins of yarn in an apparatus which comprises an open vat adapted to be filled with a liquid dye bath and having rack means for supporting a plurality of skeins of yarn which are to be randomly dyed. The rack means includes valved conduits to control the flow of dye therethrough. Further valve means are provided for selectively adjusting the level of the liquid dye bath relative to the skeins supported in the dye bath while maintaining the liquor ratio, i.e., the ratio of liquid dye bath to yarn dyed, constant and as low as practical.
Claims12
A multiple stage incremental dyeing process for randomly coloring textile yarns in a batch system comprising immersing undyed skeins of yarn into an open vat filled with a heated liquid dye bath, circulating the liquid dye bath while the skeins are completely immersed until the dye is substantially expended and taken up by the yarn to impart thereto a desired first coloration, incrementally lowering the level of the liquid bath relative to the skeins so that only successive portions thereof are immersed, adding successively portions thereof are immersed, adding successively decreasing amounts of additional dye material to the liquid bath at each incremental level of the liquid bath to reconstitute the dye bath while maintaining a constant liquor ratio, circulating the reconstituted liquid dye bath while the skeins are partially immersed at each incremental level until the dye is substantially expended and taken up by the partially immersed yarn at that level to impart to the said immersed portion a different desired coloration at each incremental level and withdrawing the dyed skeins from the bath.
A multiple stage incremental dyeing process for randomly coloring textile yarns in a batch system comprising supporting a plurality of undyed skeins of yarn on a skein support rack transporting said skein support rack and undyed skeins to an open top dye vat filled with a liquid dye bath, lowering said skein support rack into the open vat and completely immersing the supported skeins in the liquid die bath, circulating the liquid dye bath while the skeins are completely immersed until the dye is substantially expended and taken up by the yarn to impart thereto a desired first coloration, maintaining the supported skeins at a fixed elevation while incrementally lowering the level of the liquid bath relative to the skeins so that successive portions thereof are immersed, adding successively decreasing amounts of additional dye material to the liquid bath at each incremental level of the liquid bath to reconstitute the dye bath while maintaining a constant liquor ratio, circulating the reconstituted liquid dye bath while the skeins are partially immersed at each incremental level until the dye is substantially expended and taken up by the partially immersed yarn at that level to impart to the said immersed portion a different desired coloration at each incremental level and withdrawing the dyed skeins from the bath.
Dependencies are inferred from the claim text.