Bleaching and dyeing; fluid treatment and chemical modification – Fluid treatment – Combined liquid and gas or vapor
Patent
1998-03-10
1999-09-14
Gupta, Yogendra
Bleaching and dyeing; fluid treatment and chemical modification
Fluid treatment
Combined liquid and gas or vapor
8639, 8640, 8641, 8642, 8643, 8658, D06B 318, D06B 312
Patent
active
059517174
ABSTRACT:
A dyeing process comprises continuous dyeing of cellulosic circular knit, which comprises impregnating a rope of said circular knit with an aqueous liquor comprising one or more dissolved and/or dispersed dyes, any necessary fixing alkali and optionally further assistants at a temperature between 20 and 95.degree. C., squeezing off said impregnated rope and subsequently feeding said squeezed-off rope without intermediary drying into an apparatus in which said rope is opened out into a crease-free state and said dye is fixed in an unsaturated steam/air mixture which is at 100 to 160.degree. C. at an autogenous wet temperature of the moist rope of between 50 and 95.degree. C. and a fixing time of at least 20 seconds.
REFERENCES:
patent: 4465490 (1984-08-01), Von Der Eltz
patent: 4931064 (1990-06-01), Koch et al.
Journal Abstract, Kramrisch, B., "Computer Controlled Garment Steam/Air Finishing System", International Dyer, Textile Printer, Bleacher and Finisher, 179, No. 3: 26-27, Mar. 1994.
Mrotzeck Uwe
Nauroschat Thomas
Ozcan Erol
Schrell Andreas
Tressel Alfred
Dystar Textilfarben GmbH & Co.
Gupta Yogendra
Mruk Brian P.
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