Abstract:

In view of complicated fiber blending process and hard workshop management, the proposed digital ring spinning method could realize the synchronization of the spinning and the fiber blending. The mechanism of digitizing drafting to control the blending ratio of yarn to produce melange yarn was studied. The fiber blending scheme with 10% gradient was designed and 5 kinds of solid color yarn and 90 kinds of melange yarn were spun, and the color of melange yarn was simulated by Photoshop software. The structure, evenness and tensile mechanical properties of the yarn were tested and analyzed. The results show that the spinning and the fiber blending can achieve synchronization in one step by controlling the blending ratio of different colored fibers through a double channel digital ring spinning machine. Because of the mechanism of the double channel digital ring spinning draft and twisting, with the increase of any proportion of the colored fiber, the fracture strength of melange yarn shows the trend of increase first and then decrease. When the ratios of the two colored fibers are close to each other, the yarn has the fracture strength higher than solid color yarn.

Key words: melange yarn, digital ring spinning, colored fiber ratio, yarn structure, yarn property