D - Textiles – Paper – 06 – P
Patent
D - Textiles, Paper
06
P
8/30, 8/51, 8/9
D06P 3/60 (2006.01) D06B 21/02 (2006.01) D06P 1/46 (2006.01) D06P 3/82 (2006.01) D06P 5/20 (2006.01)
Patent
CA 1037656
ABSTRACT Process for the level dyeing of wound bodies of cellulose fibers or mixtures thereof with considerably shorter dyeing times according to the rapid exhaust dyeing method, wherein the wound- up fibrous material is introduced into a pressure-tight dyeing vessel, this vessel is heated with the goods to temperatures in the rang of from 100° to 120°C by replacing the air by saturated steam or superheated steam, the dyebath is prepared in a likewise pressure-tight, but separate vessel which is connected with the first-mentioned vessel by pipes and also heated to temperatures in the range of from 30 to 135°C, depending on the dyestuff class, while maintaining control of the temperature within the mentioned limit values and of the steam pressure in both closed systems and by appli- cation of an external pressure that a relative excess pressure of 3 to 10 atmospheres gauge ( = 2.94 to 9.81 bars) is developed in the batch vessel, the dyeing liquor is pressed by the differential pressure within 3 to 60 seconds simultaneously from the inside and from the outside into the dry or wet wound bodies, and the dyeing is further treated in the usual manner.
192611
Eltz Hans-Ulrich von Der
Reuther Albert
Wassmuth Hans-Joachim
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