Abstract
In this work, pressure-thickness relation is investigated for a series of plain and rib knitted structures made from cashmere and polyester textured (PET) yarns. The pressure-thickness curve during lateral compression is divided into three regions, namely, the first linear region followed by the non-linear region and second linear region [1]. The portion of these regions and also the slopes of the linear regions are found to differ markedly by knit construction and yarn structure for knit fabrics. A comparison of cashmere and PET knits reveals that the compressibility primarily depends on fiber material. Besides, the compressibility of knitted fabric also depends on the structural parameters of loop length, cover factor and fabric weight.On the other hand, in this study, the compression mechanism of knit fabrics, previously proposed by Postel [2], is modified to describe the experimental data more accurately. It becomes clear that the main structure of the knit fabric begins to deform at the second region of the pressure thickness curve and the main structure and the constituent yarns compressed mainly at the third region.
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