A Feasibility Study on Producing of High Tenacity Polyethylene Terephthalate Multifilament Yarn with Optimization of Drawing Process Parameters

In this research، the effect of some drawing parameters on the physical properties of polyester filament yarn was investigated. Heating operations were carried out with two simultaneous (heating with drawing) and sequential (heating after drawing). The results showed that the tenacity and initial modulus of PET yarns increased with increasing the draw ratio at a selected optimum heating operation. The simultaneous method gives rise to the resultant drawn yarn with superior tensile properties and low shrinkage.