Hypothetical Models of Yarn Cross-section: Comparison of the Shapes and Packing Peculiarities

Abstract

In this paper the models of morphological structure with respect to shape and packing properties of yarn cross-section are analysed. Classification of the modes of yarn cross-section shapes is proposed. According to this classification four types of yarn cross-section shapes, i.e., basic, derivative, combinative, and compound are distinguished. The possibility to compare different models is discussed also the main assumptions on this point are suggested. The hypothetical cross-sectional models, namely open packing, quadratic packing, solid packing, close packing, etc. are compared. Some new suggestions are made for the comparison of the close-packed and open-packed yarn models.