The optimization of the classical polyester knitting dyeing procedure by varying the parameters of
importance for dyeing was described by this paper. Dispersants, pH regulators, equalizers, wetting
agents, etc. facilitate and accelerate the diffusion of dye into the fiber. Laboratory tests conducted in
this work are aimed at determining the influence of these parameters for polyester dyeing, the amount
of dispersant, equalizer, pH of dyeing solution, temperature and dyeing time has been optimized. To
quantify the dye of the knitwear, after dyeing, the Kubelka-Munk equation and parameters of the
CIELab system were used, through which differences in the degree of dyeing can be characterized.
The test results show that all the examined parameters have a corresponding influence on the degree
of dye depletion and the degree of dyeing of the knitwear. The concentration of the dispersant, the
pH of the solution and the temperature of the dye stand out.
