c draw point localizing jet 25 was supplied with steam at a temperature of about 550 u00b0 c and at a pressure of 110 psig draw roll 26a was maintained at a temperature of about 230 u00b0 c and relax roll 27 was maintained at a temperature of about 120 u00b0 c the tension between pretension 23 and feed 24 rolls are increased to 500 grams 0 08 gram per denier yarn tension was increased to about 1 0 gram per denier as the ends passed to relax roll 27 and winder 22 tension was increased to about 0 2 gram per denier the draw ratio was approximately 5 9 table ii below sets forth the physical properties and quality of the yarn so produced table ii______________________________________ yarnyarn physicals qualityex u t s me am de g de u e t s u e chan ple nier nier t s strobe ical______________________________________9 1016 9 23 11 0 7 6 18 6 1 0 1 0______________________________________ with reference to examples 8 and 9 it can be seen that whereas increased draw point localizing steam temperatures reduces u e t s primarily through a t s reduction the other parameters variations of example 9 reduce u e t s principally by reducing u e yarn was produced in accordance with the process of example 1 with the following variations the melt had an intrinsic viscosity of about 0 68 to 0 78 and was supplied at a temperature of about 283 u00b0 c draw point localizing jet 25 supplied steam at a temperature of about 425 u00b0 c to 430 u00b0 c table iii below sets forth the physical properties of yarn so produced yarn was produced in.