Comparison of color values of packages wound from different spun yarns

In this study, effects of different yarn structures and properties, produced with ring, compact, open-end rotor and vortex spinning systems, on the color efficiency of package dyeing were investigated. For this purpose, 100% combed ring, compact, openend and vortex yarns with different yarn counts which were used from the same raw material blend were produced and wound on perforated plastic dye tubes (cones) according to the principle of loose winding (package density; 370 g/dm3). The bobbins were dyed with reactive dye for three different dyebath concentrations in the universal package dyeing machine. CIELab (L*, a*, b*, c* and h) values, color differences (?E) and color strength (K/S) values of dyed yarns were measured by the spectrophotometer. In conclusion, it was determined that vortex and rotor spun yarns could have darker shades with respect to ring and compact spun yarns