Discussion on circular air quench process of polyester POY/FDY composite filament
Using polyethylene terephthalate melt with an intrinsic viscosity of 0.65-0.68 dL/g as raw material,a 135 dtex/128 f polyester pre-oriented yarn(POY)/fully-drawn yarn(FDY)composite filament was produced by circular air quench process using two pairs of hot rolls.The effect of calm zone setting and quench process on the properties of composite filament was studied during circular air quench process.The results showed that the produced polyester POY/FDY composite filament was of high quality when the heat-retarder temperature was 290℃,the calm zone height was 120-140 mm,the circular air pressure was 30-40 Pa,and the height of the air cylinder was 185 mm;and compared with cross air blow method,the circular air quench method contributed a reduction of 38.9%in the variation coefficient of yarn unevenness,an increase of 3.2%in the top-quality rate and a reduction of 22.1%in the broken filament rate to the composite filament.
polyester fiberpre-oriented yarnfully draw yarncomposite filamentcircular air blowquench process
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NSTL
万方数据
维普
