Impact of draw ratio and winder speed on the fiber properties of PET FDY
Ranjit Turukmane, Chaitanya Mahajan, Kiran Patil
SVKM’S, NMIMS, MPSTME Centre For Textile Functions Shirpur/India
It has been found that spinning machine parameters are the most important factors affecting the final polyethylene terephthalate (PET) filament properties. If the temperature is considered, then low spinning temperature can give higher viscosity, higher flow resistance through the spinneret's nozzle and high die head pressure. The extruded filaments are passed over the heated godets at different speeds to orient and crystallize the molecule by varying the winding speed 4,770, 4,950, 4,500 m/min. The manufactured PET FDY (fully drawn yarn) can be suitable for various end-use applications for high-end undergarments, sportswear and home furnishings. The process optimization helped to develop better filaments that can have a scope to be utilized on a large scale. This project is more oriented toward investigation of the impact of draw ratio and winder speed over the molecule mobilization, fixation and crystallization of drawn filament at standard spinning conditions. It was found that the PET FDY tenacity (3.8, 4.1, 5.7 g/den) increased respectively, whereas elongation (40, 38, 32 %) decreased at different draw ratios.
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Table 1 Effect of winding speed on yarn tenacity & Elongation Table 2
€ 5,75
