Determining the Cross-Sectional Packing Density of Rotor Spun Yarns

X. Y. Jiang, Jinlian Hu, K. P.S. Cheng, R. Postle

Research output: Journal article publicationJournal articleAcademic researchpeer-review

28 Citations (Scopus)


Packing density, the fiber distribution in a yarn cross section, can to a great extent influence the properties and quality of the yarn. Thus, the need for precise and concise information about packing density becomes a must for an in-depth understanding of yarn structure and hence yarn mechanics. This paper describes a detailed method for determining packing density. We begin by acquiring yarn cross-sectional images to provide input data for calculating yarn cross-sectional packing density. These data include the coordinates of each fiber center and fiber radius. A program whose general writing algorithm is also elaborated in detail is compiled to calculate the packing ratio zone by zone. With these discrete packing ratios, a curve-fitting technique yields a continuous packing density function. In addition, a study of the relationship between packing density and yarn parameters such as yarn count and twist factor is included.
Original languageEnglish
Pages (from-to)233-239
Number of pages7
JournalTextile Research Journal
Issue number3
Publication statusPublished - 1 Jan 2005

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics

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