Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (02): 81-88.doi: 10.13475/j.fzxb.20211101008

• Textile Engineering • Previous Articles     Next Articles

Effect of sliver blending parameters on blending irregularity of article blended yarn

CAO Qiaoli1, LI Hao1, QIAN Lili1, YU Chongwen1,2()   

  1. 1. College of Textiles, Donghua University, Shanghai 201620, China
    2. Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China
  • Received:2021-11-01 Revised:2021-12-03 Online:2022-02-15 Published:2022-03-15
  • Contact: YU Chongwen E-mail:yucw@dhu.edu.cn

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Abstract:

Poor blending uniformity of different component fibers in yarn leads to the decrease in strength, the deterioration of the strength unevenness, and the increase of the chromatic aberration of the fabric. In order to explore the influence of sliver blending process parameters on the blending uniformity, the index of irregularity blending (IBI) was improved to characterize the blending uniformity, and the simulation of the movement of fibers during sliver blending process was analyzed to obtain the distribution regularity of fibers in the mixed sliver. In this study, the influence of different sliver mixing process parameters such as the number of combined slivers, the passages of slivers, arrangement mode, and blending ratio, on the uniformity of yarn sliver mixing was discussed, and the results were verified by experiments. The research results show that the improved IBI can evaluate more accurately the uniformity of blended slivers. The more the number of drawn passages and the number of combined slivers, the more uniform is the blending; the smaller the linear density of feeding sliver, the easier it is to carry out uniform blending. The IBI becomes less while the feeding sliver arranged at intervals and blending ratio of component close to 50∶50. The draft ratio and the distance of roller center do not show obvious effect on the IBI. The simulation results are in good agreement with the tested results.

Key words: sliver blending, process parameter, blending uniformity, index of blending irregularity, simulation

CLC Number: 

  • TS104.5

Fig.1

Diagram of fiber distribution in sliver. (a) Cross section; (b) Longitudinal view"

Tab.1

Specifications of fibers and slivers"

纤维
颜色		 纱条
定量/
(g·(10 m)-1)		 平均截
面根数		 纱条
半径/
mm		 纤维平
均线密
度/tex		 纤维平
均长度/
mm
白色(W) 7.30 1 094 6 0.667 75
黑色(B) 7.08 1 061 6 0.667 75

Tab.2

Experiment program of sliver blending"

样品
编号		 每道并合根数n
(B涤纶条数+
W涤纶条数)		 混纺比
B涤纶条含量(%)/
W涤纶条含量(%)		 头道并条喂入的
颜色排列方式		 牵伸倍数
(头道×2道×3道×
4道×(5道))		 罗拉中心距/mm
(头道×2道×3道×
4道×(5道))
1# 1+1 49.2/50.8 WB 2×2×2×2(×2)
2# 2+2 WBWB 4×4×4×4(×4)
3# 3+3 WBWBWB 6×6×6×6(×6)
4# 4+4 WBWBWBWB 8×8×8×8(×8)
5# 4+4 49.2/50.8 WWBBWWBB 8×8×8×8 95×95×95×
6# 4+4 WWWWBBBB 95(×95)
7# 1+7 12.8/87.2 WWWBWWWW 8×8×8×8
8# 1+5 17.1/82.9 WWBWWW 6×6×6×6
9# 2+6 25.6/74.4 WWBWWBWW 8×8×8×8
10# 2+4 34.0/66.0 WBWWBW 6×6×6×6
11# 3+5 38.2/61.8 WBWWBWWB 8×8×8×8

Fig.2

Cross-sectional image of blended sliver. (a) Original image;(b) Divide cells"

Tab.3

Simulation scheme"

样品
编号		 头道纱
条截面
平均纤
维根数		 牵伸倍数
(头道×
2道)		 罗拉中
心距
(头道×
2道)/
mm		 并合根数
(B+W)		 头道喂入
颜色排列
方式(混
纺比)
12# 500 6×3
13# 1 000 6×6 95×95
14# 2 000 6×12
15# 1 000 6×3 95×95 3+3 WBWBWB
(50/50)
16# 6×12
17# 80×80
18# 1 000 6×6 95×95
19# 100×100

Fig.3

Relationship between number of combined slivers and blending irregularity. (a)Tested; (b)Simulated"

Fig.4

Relationship between number of combined slivers and IBI. (a)Tested;(b)Simulated"

Fig.5

Relationship between feeding arrangement of first passage and blending irregularity. (a)Tested; (b)Simulated"

Fig.6

Relationship between feeding arrangement of first passage and IBI. (a)Tested;(b)Simulated"

Fig.7

Relationship between blending ratio and blending irregularity. (a)Tested;(b)Simulated"

Fig.8

Relationship between blending ratio and IBI. (a)Tested;(b)Simulated"

Fig.9

Relationship between draft multiple, weight of sliver and blending irregularity, IBI. (a)Draft multiple;(b)Weight of sliver"

Fig.10

Relationship between distance of roller center, blending irregularity and IBI"

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