Abstract
In the paper, a new method by which it is possible to define the crimping of the textured filament PES yarns is presented. The method is based on the flow analysis of the force - elongation function. POY multifilament polyester yarns, having the fineness of 167f36x1 dtex were analyzed. The texturing of PES multifilament yarns was performed using different first heater temperatures and maintaining the constant temperature of the second heater, then with different texturing speeds at the extension degree of 1.665 and at the ratio of the disc circumferential speed to yarn speed of 2.20. Moreover, the results were compared with the data obtained using standardized crimping testing method.
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