Where you are: Home pageYear 2010Issue (78) → Article:

Visualisation and Determination of the Geometrical Parameters of Slub Yarn

Research and development


  • Liu Jihong
    Creative Digital Media Research Centern, School of Textile and Garment, JiangNan University, WuXi, P. R. China
  • Li Zhengxin (j/w)
  • Lu Yuzheng (j/w)
  • Jiang Hongxia
    Faculty of Textile Science and Technologyg, Shinshu University, Nagano, Japan

Download... PDF
Full text


This paper presents an analytical method of determining slub yarn geometrical parameters based on a 2D visualisation image of a slub yarn. The method can be used to adjust the slub yarn mechanism by comparing experimental results with the setting used. Geometrical size data of slub yarn are acquired by DAQ (Data Acquisition Card), and expressed as voltage signals. The dynamic threshold method is used to separate the base and slub parts, and the geometrical parameters of each part can be acquired through analysis of the new curve. The slub length can be plotted against the distance between slubs to give a 2D visualisation of any pattern in the periodicity. Characteristic lengths and spacing can be estimated from the plot. According to the experimental results, the slub length is longer and the slub distance shorter than the values set for the mechanism of the spinning frame.

Tags: slub yarn, geometrical parameter, determination, visualisation, signal.

Citation: Liu J., Li Z., Lu Y., Jiang H.; Visualisation and Determination of the Geometrical Parameters of Slub Yarn. FIBRES & TEXTILES in Eastern Europe 2010, Vol. 18, No. 1 (78) pp. 31-35.

Published in issue no 1 (78) / 2010, pages 31–35.


in Eastern Europe
ul. Skłodowskiej-Curie 19/27,
90-570 Łódź, Poland
tel. (48-42) 638-03-14
e-mail: infor@ibwch.lodz.pl

ul. Skłodowskiej-Curie 1927, 90-570 Łódź, Poland • tel.  (48-42) 638-03-14 • e-mail: infor@ibwch.lodz.plhttp://www.fibtex.lodz.pl

Editor-in-Chief Emilia Jaszczurska-Niedźwiedzka, V-ce Editor-in-Chief Marta Cyrczak, Text Editor Geoffrey Large, Assistant Editor Anna Wahl, Typesetting and Printed at Media-Press • Production IBWCh