Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (08): 27-33.doi: 10.13475/j.fzxb.20220402507

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

Effect of air-jet vortex spinning process on properties of viscose/polyester core-spun yarns

ZOU Zhuanyong1(), MIAO Lulu1, DONG Zhengmei1,2, ZHENG Guoquan1, FU Na1   

  1. 1. Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province, Shaoxing University, Shaoxing, Zhejiang 312000, China
    2. China Textile Academy (Zhejiang) Technology Research Institute Co., Ltd., Shaoxing, Zhejiang 312000, China
  • Received:2022-04-06 Revised:2022-05-19 Online:2022-08-15 Published:2022-08-24

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Abstract:

In order to obtain higher strength air-jet vortex spun yarns, the viscose/polyester core-spun yarn was produced on air-jet vortex spinner by adding a polyester filament in the yarn formation process. The effects of core filament linear density and the yarn delivery speed on the strength, elongation, unevenness and hairiness of air-jet vortex spun viscose/polyester core-spun yarn were studied by statistical analysis method. The structure and appearance of core-spun yarns under different spinning conditions was compared and analyzed. The results show that the core filament linear density and yarn delivery speed have different effects on the performance of air-jet vortex viscose/polyester core-spun yarn. In general, either too high or too low yarn delivery speed is not conducive to improving yarn strength-elongation performance and improving yarn evenness for core-spun yarns obtained, and the increase of yarn delivery speed will increase the hairiness H value. In a certain range, increasing the core filament linear density is beneficial to improve the strength and elongation of the core-spun yarn, and the hairiness H value of the core-spun yarn decreases with the increase of the core-filament linear density. In addition, when the larger core-filament linear density and higher yarn delivery speed are selected in air-jet vortex spinning, there is more obvious exposure for the core filament in viscose/polyester core-spun yarn.

Key words: air-jet vortex spinning, core-spun yarn, spinning process, yarn property

CLC Number: 

  • TS101.2

Tab.1

Properties of polyester filament"

编号 长丝
种类		 线密度/
tex		 强力/
cN		 断裂强度/
(cN·dtex–1)		 断裂伸
长率/％
1 DTY 3.33 132 3.96 12.36
2 DTY 5.56 218 3.92 17.15
3 DTY 8.33 331 3.97 19.54

Tab.2

Factor level table"

水平 芯丝线密度X1/tex 纺纱速度X2/(m·min–1)
1 0 350
2 3.33 380
3 5.56 410
4 8.33 —

Tab.3

Full factor test table"

试样
编号		 芯丝线
密度
X1/tex		 纺纱
速度X2/
(m·min–1)		 试样
编号		 芯丝线
密度
X1/tex		 纺纱
速度X2/
(m·min–1)
L1 0 350 L7 5.56 350
L2 0 380 L8 5.56 380
L3 0 410 L9 5.56 410
L4 3.33 350 L10 8.33 350
L5 3.33 380 L11 8.33 380
L6 3.33 410 L12 8.33 410

Tab.4

Process parameter setting"

试样
编号		 集棉器
颜色		 总牵伸
倍数		 后牵伸
倍数		 主牵伸
倍数		 中区牵伸
倍数
L1 白 184 3 30 2
L2 白 184 3 30 2
L3 白 184 3 30 2
L4 淡黄 219 3 30 2.4
L5 淡黄 219 3 30 2.4
L6 淡黄 219 3 30 2.4
L7 黄 243 3 30 2.7
L8 黄 243 3 30 2.7
L9 黄 243 3 30 2.7
L10 黄 283 3.5 35 2.3
L11 黄 283 3.5 35 2.3
L12 黄 283 3.5 35 2.3

Tab.5

Yarn performance test results"

试样
编号		 芯丝线
密度
X1/tex		 纺纱速
度 X2/
(m·min–1)		 断裂强
度 Y1/
(cN·tex–1)		 断裂伸
长率
Y2/％		 条干
CV值
Y3/％		 毛羽
H值
Y4
L1 0 350 12.17 10.54 12.50 3.48
L2 0 380 13.26 11.50 10.43 3.73
L3 0 410 13.30 11.37 12.62 4.03
L4 3.33 350 15.87 12.99 12.02 3.35
L5 3.33 380 16.27 13.09 12.19 3.58
L6 3.33 410 15.86 12.53 12.17 3.81
L7 5.56 350 18.58 13.73 13.21 3.44
L8 5.56 380 18.88 13.97 12.12 3.60
L9 5.56 410 18.53 13.87 12.19 3.76
L10 8.33 350 18.86 14.89 12.18 3.15
L11 8.33 380 18.84 14.59 11.69 3.31
L12 8.33 410 18.98 14.62 11.80 3.41

Tab.6

Regression analysis (p value) of response surface cubic model for different response variables"

项目 断裂强度
Y1		 断裂伸长
率Y2		 条干CV值
Y3		 毛羽H值
Y4
常量 0.012＊ 0.128 0.099 0.265
X1 0.020＊ 0.135 0.254 0.226
X2 0.009＊ 0.104 0.108 0.518
X 1 2 0.230 0.345 0.962 0.028＊
X 2 2 0.010＊ 0.110 0.107 0.285
X1X2 0.027＊ 0.162 0.244 0.240
X 1 3 0.001＊ 0.785 0.513 0.002＊
X 1 2X2 0.018＊ 0.290 0.808 0.928
X1 X 2 2 0.036＊ 0.185 0.235 0.193

Tab.7

Regression equation and R2 for different response variables"

纱线
性能		 回归方程 R2
断裂
强度
Y1		 Y1=–88.5+13.98X1+0.517 3X2+0.090 7 X 1 2–0.000 656 X 2 2–0.065 6X1X2–0.032 64 X 1 3+0.000 654 X 1 2X2+0.000 077X1 X 2 2 0.999 6
断裂
伸长率
Y2		 Y2=–86.3+16.03X1+0.502X2–0.172 X 1 2–0.000 645 X 2 2–0.076 3X1X2–0.001 73 X 1 3+0.000 458 X 1 2X2+0.000 093X1 X 2 2 0.991 9
条干
CV值
Y3		 Y3=259–29.4X1–1.309X2+0.021 X 1 2–0.001 727 X 2 2+0.158X1X2–0.011 3 X 1 3+0.000 251 X 1 2X2–0.000 213X1 X 2 2 0.737 3
毛羽
H值
Y4		 Y4=4.24–0.901X1–0.012X2+0.046 7 X 1 2+0.000 028 X 2 2+0.004 54X1X2–0.004 169 X 1 3+0.000 003 X 1 2X2–0.000 007X1 X 2 2 0.998 5

Fig.1

Effect of core-filament linear density X1 and yarn delivery speed X2 on yarn breaking strength"

Fig.2

Effect of core-filament linear density X1 and yarn delivery speed X2 on yarn breaking elongation"

Fig.3

Effect of core-filament linear density X1 yarn delivery speed X2 on yarn evenness CV value"

Fig.4

Effect of core-filament linear density X1 and yarn delivery speed X2 on yarn hairiness H value"

Fig.5

SEM images of some representative air\|jet vortex spinning yarn samples"

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