A method for the continuous dyeing of textile products in a solvent bath and apparatus for carrying out this method

摘要

An apparatus is described for continuously dyeing textile fabrics. The apparatus may be best described in terms of its operation as follows: The fabric is preheated in a chamber and then impregnated with a bath consisting of dyestuff dissolved in a solvent in another chamber. Then the fabric is treated in a developing chamber where the dyestuff is fixed thereon by evaporation of the solvent. The excess solvent is then eliminated from the fabric in a water vapor atmosphere. The treatment in the developing chamber is effected by passing the fabric continuously and alternately a plurality of times to and from a zone of saturated solvent vapor and a zone of superheated solvent vapor. The solvent in these two zones is substantially the same as the solvent in the bath.