Process for the treatment of warp yarns

A continuous process for the treatment of warp yarns, wherein a row of substantially parallel, unbundled warp yarns is impregnated with an excess of a treating liquor, said excess is then removed from the impregnated yarns in a liquor removal zone, the yarns are dried and finally wound up on a loom beam, the process which comprises, at least in said liquor removal zone, the linear thread density of the warp yarn row, expressed by the relation Q = F .times. D wherein Q is the linear thread density, F is the thread count in cm.sup.-1, and D is the mean diameter of each thread in cm, is brought to a value of at least 2, said value of at least 2 defining at least two complete superimposed sheets of warp yarns, with adjacent warp yarns contacting one another and being constant over the entire width of said yarn row and being substantially the same at any width increment, and the finally dried warp yarns are wound up on at least one loom beam, said increased linear thread density of at least 2 being reduced to the nominal thread count for weaving of each loom beam before the treated warp yarns are wound up on said beam.