Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (07): 35-39.doi: 10.13475/j.fzxb.20191105505

• Textile Engineering • Previous Articles     Next Articles

Effect of taker-in speeds on variation and redistribution of nep

CAO Jipeng1,2(), ZHANG Mingguang1,2, YU Xuezhi1,2   

  1. 1. School of Clothing & Textile, Eastern Liaoning University, Dandong, Liaoning 118003, China;
    2. Liaoning Key Laboratory of Functional Textile Materials, Eastern Liaoning University, Dandong, Liaoning 118003, China
  • Received:2019-11-25 Revised:2020-04-09 Online:2020-07-15 Published:2020-07-23

RichHTML

10

PDF (PC)

286

Abstract:

In order to remove nep effectively in carding so as to improve carding and yarn quality, the cotton fibers were carded at 4 taker-in speeds, the content and size of nep in card sliver, taker-in droppings, flat strips and cylinder screen droppings were tested using USTER AFIS tester. Results show that total neps are reduced by 20.58%-26.7% after laps are carded; the neps in cotton lap are carded and redistributed in card sliver, taker-in droppings, flat strips and cylinder screen droppings, and nep percentage in card sliver is the highest, at about 90%, followed by that in flat strips, that in taker-in droppings and that in cylinder screen droppings; comparing with the average size of total neps in cotton lap, that in card sliver is decreased by 13.1%-14.2%, while that in taker-in droppings and that in flat strips are increased by 12.6%-19.2% and 8.4%-10.3%, respectively, and that in cylinder screen droppings is reduced by 2.6%-4.6%; nep content of card sliver has a tendency to decrease with the increase of taker-in speed.

Key words: cotton card, taker-in, nep, card sliver, flat strip

CLC Number: 

  • TS104.2

Tab.1

AFIS test results of materials used in experiment"

纤维质量
平均长度/
mm		 纤维根数
平均长度/
mm		 5.0%根数
长度/mm		 根数短绒率
(<16 mm)/%		 棉结总数/
(粒·g-1)		 棉结尺寸/
μm		 带籽屑
棉结含量/
(粒·g-1)		 带籽屑
棉结尺寸/
μm		 粒杂含量/
(粒·g-1)		 尘杂含量/
(粒·g-1)		 可见
异物率/
%
25.7 21.7 34.3 25.9 225 675 4 1 136 31 142 0.69

Tab.2

Redistribution of total neps and SCNs in carding process under different taker-in speeds"

刺辊速度/
(r·min-1)		 试样
名称		 试样质量/
kg		 棉结含量/
(粒·g-1)		 棉结
总数/粒		 棉卷经过
梳理后棉结
占比/%		 带籽屑棉
结含量/
(粒·g-1)		 带籽屑
棉结总数/
粒		 棉卷经过梳理后
带籽屑棉结
占比/%
棉卷 26.000 310 8 060 000 — 4 104 000 —
生条 25.041 228 5 709 348 90.17 1 25 041 23.21
800 盖板花 0.585 752 439 920 6.95 94 54 990 50.97
刺辊落棉 0.307 441 135 387 2.14 89 27 323 25.32
锡林漏底落棉 0.067 698 46 766 0.74 8 536 0.50
棉卷 25.700 310 7 967 000 — 4 102 800 —
生条 24.574 227 5 578 298 88.16 2 49 148 32.72
1 000 盖板花 0.601 796 478 396 7.56 84 50 484 33.61
刺辊落棉 0.451 479 216 029 3.41 111 50 061 33.33
锡林漏底落棉 0.074 737 54 538 0.86 7 518 0.34
棉卷 25.330 310 7 852 300 — 4 101 320 —
生条 23.997 224 5375328 87.17 1 23997 21.80
1 200 盖板花 0.578 779 450 262 7.30 87 50 286 45.68
刺辊落棉 0.657 421 276 597 4.49 53 34 821 31.63
锡林漏底落棉 0.098 656 64 288 1.04 10 980 0.89
棉卷 25.525 310 7 912 750 — 4 102 100 —
生条 24.005 206 4 945 030 85.26 2 48 010 33.18
1 400 盖板花 0.578 773 446 794 7.70 91 52 598 36.35
刺辊落棉 0.865 408 352 920 6.08 50 43 250 29.89
锡林漏底落棉 0.077 720 55 440 0.96 11 847 0.59

Tab.3

Average size of total neps and SCNs in card sliver and several droppings under different taker-in speeds"

刺辊速度/
(r·min-1)		 棉卷 生条 盖板花 刺辊落棉 锡林漏底落棉
总棉结
尺寸/μm		 带籽
屑棉结
尺寸/μm		 总棉结
尺寸/μm		 带籽
屑棉结
尺寸/μm		 总棉结
尺寸/μm		 带籽
屑棉结
尺寸/μm		 总棉结
尺寸/μm		 带籽
屑棉结
尺寸/μm		 总棉结
尺寸/μm		 带籽
屑棉结
尺寸/μm
800 681 1 078 590 761 751 1 151 795 1 035 657 765
1 000 681 1 078 592 747 744 1 204 812 1 127 654 842
1 200 681 1 078 590 782 738 1 138 772 1 053 650 859
1 400 681 1 078 584 761 746 1 149 767 1 058 663 889

Tab.4

Content of total neps under different taker-in speeds"

刺辊速度/
(r·min-1)		 棉结/(粒·g-1)
棉卷 生条 盖板花 刺辊
落棉		 锡林漏
底落棉
800 228 752 441 698
1 000 310 227 796 479 737
1 200 224 779 421 656
1 400 206 773 408 720

Tab.5

Content of SCNs under different taker-in speeds"

刺辊速度/
(r·min-1)		 带籽屑棉结/(粒·g-1)
棉卷 生条 盖板花 刺辊
落棉		 锡林漏底
落棉
800 1 94 89 8
1 000 4 2 84 111 7
1 200 1 87 53 10
1 400 2 91 50 11
[1] 谢家祥. 梳棉生产中棉结与短绒的控制[J]. 纺织器材, 2018,45(3):51-58.
XIE Jiaxiang. Control of cotton neps and short fibres in carding process[J]. Textile Accessories, 2018,45(3):51-58.
[2] ARTZT P. Influence of various card clothing parameters on the results obtained in high-speed carding of cotton[J]. Melliand Textilber, 1985,66:707-712.
[3] JUZO Hosokawa. Effect of increasing speed of carding machine on nep formation[C] //Academic Report of Fiber Division in Kyoto Institute of Technology. Kyoto: Kyoto Institute of Technology Press, 1982: 76-87.
[4] MILLS D J. Practical carding at ultra high speed: a theoretical approach[J]. Int Text Bull, 1997,43(1):28-30.
[5] LAWRENCE C A, DEHGHANI A, MAHMOUDI M, et al. Fiber dynamics in the revolving-flats card: part I: a critical review[J]. AUTEX Res J, 2000(1):64-77.
[6] GÖKTEPE F, GÖKTEPE Ö, SÜLEYMANOV T. The effect of the licker-in speed on fiber properties on modern carding machines with a triple licker-in[J]. Journal of The Textile Institute, 2003,94(3/4):166-176.
[7] ISHTIAQUE S M, CHAUDHURI S, DAS A. Influence of fibre openness on processibility of cotton and yarn quality: part Ⅱ: effect of carding parameters[J]. Indian Journal of Fibre & Textile Research, 2003,28(12):405-410.
[8] PRAKASH Vasudevan. An investigation into the effect of licker-in design on carding performance[D]. Leeds: The University of Leeds, 2005: 4.
[9] 孙鹏子. 梳棉机刺辊速度的研究与选择[J]. 棉纺织技术, 2005,33(10):591-595.
SUN Pengzi. Research and choice of licker-in speed of carding machine[J]. Cotton Textile Technology, 2005,33(10):591-595.
[10] 于学智, 孙鹏子. 锡林刺辊速比与生条质量关系的试验探讨[J]. 棉纺织技术, 2009,37(3):146-148.
YU Xuezi, SUN Pengzi. Test and discussion of relationship between cylinder/take-in speed ratio and card sliver quality[J]. Cotton Textile Technology, 2009,37(3):146-148.
[11] GANGWAR A K S. Effect of carding parameters on processibility of cotton fibres[J]. Man-made Textiles in India, 2009,9:317-322.
[12] 曹继鹏, 张明光, 许兰杰, 等. 锡林刺辊线速比与成纱质量关系的探讨[J]. 棉纺织技术, 2018,46(12):1-4.
CAO Jipeng, ZHANG Mingguang, XU Lanjie, et al. Relation between the speed ratio of cylinder and licker-in and yarn quality[J]. Cotton Textile Technology, 2018,46(12):1-4.
[13] 王盼, 程隆棣, 华志宏. 刺辊锯齿螺旋倾角与分梳质量关系的理论研究[J]. 纺织学报, 2017,38(9):131-135,141.
WANG Pan, CHENG Longdi, HUA Zhihong. Theoretical study of influence of spiral angle of licker-in on carding quality[J]. Journal of Textile Research, 2017,38(9):131-135,141.
[14] 陈玉峰. 浅析梳理工艺控制短绒棉结的误区[J]. 纺织器材, 2018,45(3):59-63.
CHEN Yufeng. My tentative views on the misconception of controlling short fibres and neps in carding process[J]. Textile Accessories, 2018,45(3):59-63.
[15] FRYDRYCH I, MATUSIAK M. Trends of AFIS application in research and industry[J]. Fibres & Textiles in Eastern Europe, 2002,10(3):35-39.
[16] CAO Jipeng, LU Qin, SUN Pengzi, et al. Test stability of uster advanced fiber information system (AFIS)[J]. Journal of Donghua University (English Edition), 2010,27(3):412-418.
[1] SHAO Yinghai, ZHANG Mingguang, CAO Jipeng, GUO Xin, HAN Xianguo. Effect of speed ratio between cylinder and taker-in on carding quality [J]. Journal of Textile Research, 2020, 41(01): 39-44.
[2] . Correlation analysis on relationship between short fiber content of  card sliver and yarn parameters [J]. Journal of Textile Research, 2018, 39(12): 30-36.
[3] . Influence of cylinder speed on fiber length distribution of flat strips [J]. Journal of Textile Research, 2015, 36(03): 24-27.
[4] Ji-Peng CAO. Movement law of nep in electrostatic field [J]. JOURNAL OF TEXTILE RESEARCH, 2013, 34(8): 33-0.
[5] CAO Jipeng;SUN Pengzi . Comparative analysis of testing stability between AFIS and aQura [J]. JOURNAL OF TEXTILE RESEARCH, 2010, 31(3): 123-127.
[6] CAO Ji-peng;WANG Rui;SUN Peng-zi. Effect of voltage and gauge of static electricity plate on nep of card sliver [J]. JOURNAL OF TEXTILE RESEARCH, 2010, 31(2): 101-105.
[7] CHEN Yuguo;ZHANG Mingguang;SUN Pengzi;LI Zhiyang;LU Qin. Test stability of Primer aQura [J]. JOURNAL OF TEXTILE RESEARCH, 2010, 31(1): 112-116.
[8] ZHANG Mingguang;SUN Pengzi;WANG Lanprocessed by carding plate.. Effect of pin carding plate on removal of impurities [J]. JOURNAL OF TEXTILE RESEARCH, 2008, 29(5): 110-113.
[9] 辽东学院服装与纺织学院 辽宁丹东000. Comparative study on different types of web cleaner [J]. JOURNAL OF TEXTILE RESEARCH, 2008, 29(4): 111-114.
[10] SUN Pengzi;ZHANG Mingguang;WANG Lan. Effect of pin carding plate on fiber length distribution [J]. JOURNAL OF TEXTILE RESEARCH, 2008, 29(11): 39-43.
[11] SUN Pengzi;ZHANG Mingguang;WANG Lan. Effect of pin carding plate on removal of neps [J]. JOURNAL OF TEXTILE RESEARCH, 2008, 29(10): 34-38.
[12] ZHU Zhengfeng;WANG Junhua;DONG Xinlei. Investigation on the neps producing rule during processing combed yarns with rotor spinner [J]. JOURNAL OF TEXTILE RESEARCH, 2007, 28(8): 39-41.
[13] SUN Peng-zi;WANG Lan;ZHANG Zhi-dan;ZHANG Ming-guang. Study on fiber length distribution of taker-in droppings and card strips [J]. JOURNAL OF TEXTILE RESEARCH, 2006, 27(5): 80-83.
[14] WANG Lan;SUN Peng-zi;ZHANG Ming-guang. Effect of feed plate gauge on fiber length distribution [J]. JOURNAL OF TEXTILE RESEARCH, 2006, 27(4): 70-73.
[15] SUN Peng-zi;SHAO Jing-dang. Influence of wind′s flow of web cleaner in a carding machine on the quality of card sliver [J]. JOURNAL OF TEXTILE RESEARCH, 2006, 27(3): 74-76.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
京ICP备14006648号
Copyright 2021 © Editorial office of Journal of Textile Research
Supported by Beijing Magtech Co.Ltd