Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (08): 21-26.doi: 10.13475/j.fzxb.20220402307

• Invited Column： Reserch on Spinning Technology • Previous Articles     Next Articles

Method and characteristics of section colored slub yarns spun by two-channel ring spinning based on single-zone drafting

GUO Mingrui, GAO Weidong()   

  1. Key Laboratory of Eco-Textiles(Jiangnan University), Ministry of Education, Wuxi, Jiangsu 214122, China
  • Received:2022-04-06 Revised:2022-05-18 Online:2022-08-15 Published:2022-08-24
  • Contact: GAO Weidong E-mail:gaowd3@163.com

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Abstract:

Decorative roving of section colored slub yarns spun on the existing ring spinning machine must be subjected to double zone drafting. There is a problem that the length of composite segment of color slub fluctuates greatly and the morphological stability of color slub is poor, which affects the fancy effect of fabric. A new double-channel ring spinning machine with single draft zone for spinning section colored slub yarn was developed. The influence factors and variation rules between two spinning methods on the composite slub yarn were analyzed. The yarn image continuous acquisition device was used to measure and analyse the characteristic parameters of the composite segments of section colored slub yarns. The results show that the section colored slub yarns spun by two-channel ring spinning based on single-zone drafting is superior to the traditional one in terms of length stability and shape of section colored slub. The coefficient of variation of color slub length of 20 mm short segment decreased from 30.5％ to 16.3％, and that of 80 mm long segment decreased from 10.1％ to 6.2％.

Key words: spinning, double-zone drafting, single-zone drafting, two-channel ring spinning, section colored slub yarn, fancy yarn

CLC Number: 

  • TS104.1

Fig.1

Appearance of section color slub yarn. (a)Yarn diagram;(b)Yarn physical image"

Fig.2

Diagram of section color slub yarn spun by traditional double\|zone drafting"

Fig.3

Diagram of two-channel ring spinning with single-zone drafting"

Fig.4

Diagram of drafting process of decorative roving for spinning section color slub yarn in traditional double\|zone drafting"

Fig.5

Diagram of drafting process of decorative roving for spinning section color slub yarn in single-zone drafting"

Fig.6

Image acquisition unit"

Fig.7

Comparison of processing effect of yarn image. (a)Original yarn drawing;(b)Binary image; (c)Binary image of removing small area noise"

Tab.1

Section color slub length of two spinning ways"

段彩竹节长度
设定值/mm		 单区牵伸两通道 传统双区牵伸
平均长
度/mm		 变异系
数/％		 平均长
度/mm		 变异系
数/％
20 46.1 16.3 53.2 30.5
30 57.9 11.9 70.1 21.9
40 67.5 10.9 80.5 16.5
50 81.9 9.5 100.1 14.1
60 94.5 6.8 114.5 12.8
70 102.7 6.1 126.7 10.4
80 109.3 6.2 133.7 10.1

Fig.8

Weft knitted fabric of section color slub yarn. (a)Traditional double\|zone drafting;(b)Two-channel ring spinning with single\|zone drafting"

Tab.2

Section color slub yarn of different slub lengths and related machine operation parameters"

段彩竹节
长度设定
值/mm		 饰纱平均喂
入长度实
测值/mm		 饰纱单次平
均喂入纤维
质量计算值/g		 段彩竹节平均倍率计算值
单区牵伸
两通道		 传统双
区牵伸
20 1.48 0.062 1.46 1.40
30 2.18 0.092 1.54 1.45
40 2.84 0.119 1.61 1.51
50 3.65 0.153 1.64 1.52
60 4.39 0.184 1.67 1.55
70 5.12 0.215 1.72 1.58
80 5.93 0.249 1.78 1.64
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