Abstract:

In order to explore the influence of slub yarn linear density, slub length and slub diatance on the properties of colorful slub yarn, 27.8 tex colorful cotton slub yarns were spun on three-channel digital spinning frame using single-channel, two-channel or three-channel feeding modes and adopting four kinds of ratio between slub and basic yarn (105, 2.0, 2.5 and 3.0), three kinds of slub length (5.1 cm, 702cm and 9.3cm), and the same slub distance. The strength and appearance of these yarns were investigated. The results showed that actual length of slub yarn is greater than that of designed, and the slub distance and linear density of slub is smaller than that of the designed value. When the linear density of slub is consant, with the increase of slub length, the deviation of length between the tested value and the designed value kept the same, but the strength of slub yarn decreases. When the slub length is constant, with the increase of the linear density of slub, the average slub length is more close to the designed value, but the strength of slub yarn decreases.

Key words: slub yarn, three-channel digital spinning, ratio between slub and basic yarn, slub length, yarn strength