Process and apparatus for the continuous dyeing of lengths of material consisting at least partly of cellulose fibers
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United States of America Patent
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Oct 21, 1980
Grant Date -
N/A
app pub date -
Jun 29, 1973
filing date -
Jun 29, 1972
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved process for the continuous dyeing of lengths of textile material that at least partly contain cellulose fibers by the Pad-Steam process wherein the textile material onto which dyestuff has been applied is impregnated with chemical reducing agents including an alkaline solution, is then transported into a steamer for dyestuff-fixation by steaming thereon, is then after-treated by the sequential steps of rinsing with a liquor to remove the reducing agents, oxidizing the dyestuff with a liquor, and soaping and again rinsing the material with a liquor, and then finally drying the material. The improvement in the process comprises effecting the after-treatment steps, at least partially, by forcing the appropriate liquors through the material, especially on the perforated surface of a suction drum.
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