Finishing process
AssigneeSandoz Ltd.
InventorGordon H. Lister
Life of this patent
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Abstract
A finishing process for porous fibrous materials, especially for textiles, especially a dyeing process, in the presence of relatively small amounts of water and a foaming agent, is carried out at a liquor to material ratio of about 0.25:1 to 5:1. This water-saving finishing process leads to equal and level finishings especially important in the dyeing area.
Claims13
A low liquor ratio textile finishing process of the kind which comprises a step in which the textile is impregnated with a finishing liquor comprising finishing agent and water and a heating step in which the temperature of the textile is raised to a predetermined finishing temperature, the quantity of finishing liquor being such that the textile absorbs substantially all of the available liquor during the impregnation step, wherein the heating step comprises heating the impregnated textile to the predetermined finishing temperature while moving it in an atmosphere which is substantially or completely saturated with water vapor.
Dependencies are inferred from the claim text.