Blending effect of rotor spun yarn with different blending methods

Abstract

Color blended rotor spun yarn mixing with different methods were spun. Three blending methods were used, one passage of drawing, three passages of drawing and rovings during multi-channel spinning. Multi-channel spinning is modified on rotor spinning machine, which is implemented by a novel mechanical system specially designed to incorporate three separate feed rollers side by side and controlled by servo motors with PLC. Using this new method, blend ratio of yarn can be controlled and realized by asynchronous drafted rovings. 37 type of color blend yarn were produced with different blending ratios. And each yarn was intercepted with 5 cross sections and a total of 185 cross-sectional images were taken. Hamilton index of different colored fibers were calculated of the each type of yarns. And sum of absolute values of Hamilton index were got to demonstrated fibers blending effect in yarns cross sections. All the Hamilton index of the yarns prepared by the three above mentioned methods were all around 5, much below 20. The results showed that regardless of blending method used, the blending effects of rotor spun yarns were all very good.

The pattern design of fabrics produced by three-channel rotor-spun colorful melange yarn

“…Using this new method, the blend ratio of yarn can be controlled and realized by asynchronous drafted slivers dynamically. They also found out that rotor spun is a good method to blend fibers evenly during the spinning process (Yang et al , 2019c). The self-circulation form of different segment length of segment color yarn can be combined with fabric structure, which provides more innovative ideas for the development of color fabric pattern with the features of the soft hand feel and three-dimensional pattern.…”