三通道数码细纱机纺制竹节纱的原理及其性能

为探究竹节倍率、竹节长度及竹节间距对多彩竹节纱性能的影响规律,提出一种基于三通道数码环锭细纱机利用单通道、双通道和三通道3种喂入方式纺制竹节纱的纺纱方法,分别采用4种竹节倍率(1.5、2.0、2.5、3.0)、3种竹节长度(5.1、7.2、9.3 cm)、相同竹节间距,纺制基纱线密度为27.8 tex的纯棉多彩竹节纱,并对纱线的外观参数和强伸性进行测试与分析。结果表明:竹节纱的竹节实际长度大于理论值,竹节实际间距和竹节实际倍率小于理论值;竹节倍率不变,随着竹节长度的增加,竹节实际长度与理论长度的偏差量不变,且竹节纱的强力逐渐减小;竹节长度不变,随着竹节倍率的增大,竹节长度接近理论值,且竹节纱的强力逐渐减小。

Principle and properties of slub yarns spun by three-channel digital ring spinning

In order to explore the influence of slub yarn linear density, slub length and slub distance on the properties of colorful slub yarn, 278 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 (15, 20, 25 and 30), three kinds of slub length (51 cm, 72 cm and 93 cm ) , and the same slub distance. The strength and appearance of these yarns were investigated. The results showed that the 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 constant, 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.