Process for continuous dyeing of cellulosic circular knits with water-soluble dyes
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United States of America Patent
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Apr 4, 2000
Grant Date -
N/A
app pub date -
Nov 5, 1998
filing date -
Nov 7, 1997
priority date (Note) -
Expired
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Abstract
Process for continuous dyeing of cellulosic circular knits composed of natural or modified hydroxy-containing or natural, modified or synthetic carboxamido-containing fiber materials with water-soluble dyes comprises initially impregnating the material with an aqueous dye solution, optionally comprising auxiliaries, in the course of the dyeing step, reducing the liquor content to 400% by weight, based on weight of fiber, by squeezing means customary for tubular material, and subsequently subjecting the liquor-comprising material to a leveling and fixing step for the dye applied to the material by transporting the rope of material continuously through the machine unit by means of the flowing dyeing liquor at a liquor ratio of up to 10:1.
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