The Continuous Dyeing of Wool with Milling Acid Dyes

It has been shown that loose wool may be successfully dyed continuously with milling acid dyes in very short times at 100d̀c. in normal scouring machines, thus eliminating normal dyeing machinery. The method is restricted commercially to pale and medium depths. A pad—steam method has been developed for dyeing wool pile fabrics continuously. It hasbeen found that it is not possible to dye wool piece goods satisfactorily by continuous pad‐steam methods, owing to the hydrophobic character of the wool and the difficulty of eliminating skitteriness from the dyeings.