Abstract:

In order to study the influence of blending ratio and feed positions on fiber blending in digital rotor spun yarn, five kinds of cotton color blended yarn were produced and the slices of the yarn cross-sections were prepared. The vertical and horizontal microstructure of the yarns were observed. The fiber Hamilton indices were calculated. Considering the surface structure of the cloth, fiber blending effects of digital rotor spun yarn were analyzied in different ways . The results show that the blending ratio and the feeding position have no significant effect on the fiber blending; the Hamiltonian index of each colored fiber is from - 25% to 25%, showing a normal distribution trend, and the actual content of the fiber varies within the range of  ± 10% of the design content, so the yarn and cloth surface show gorgeous colors.

Key words: digital rotor spinning, color blended yarn, fiber distribution, Hamiltonian index, blending effect