obtained with changes in quench air flow and rv are ______________________________________low mr values quench air flow yarn rv mrft sup 3 min m sup 3 min 60 u00b1 3 66 u00b1 3 72 u00b1 3 change______________________________________290 8 21 1 65 1 70 1 70 0 05320 9 06 1 60 1 65 1 75 0 15350 9 91 1 65 1 75 1 70 0 10380 10 76 1 70 1 70 1 75 0 05 mr change 0 10 0 10 0 05high mr values quench air flow yarn rv mrft sup 3 min m sup 3 min 60 u00b1 3 66 u00b1 3 72 u00b1 3 change______________________________________290 8 21 2 35 2 40 2 55 0 20320 9 06 2 30 2 35 2 55 0 25350 9 91 2 40 2 45 2 60 0 20380 10 76 2 45 2 55 2 65 0 20 mr change 0 15 0 20 0 10______________________________________ modification ratios obtained with changes in quench air flow and extrusion temperature are ______________________________________low mr component rv 66 u00b1 3 mr values quench air flow extrusion temperature mrft sup 3 min m sup 3 min 287 u00b0 c 291 u00b0 c 295 u00b0 c change______________________________________290 8 21 1 65 1 70 1 75 0 10380 10 76 1 70 1 75 1 80 0 10 mr change 0 05 0 05 0 05high mr component rv 66 u00b1 3 mr values quench air flow extrusion temperature mrft sup 3 min m sup 3 min 287 u00b0 c 291 u00b0 c 295 u00b0 c change______________________________________290 8 21 2 30 2 45 2 55 0 25380 10 76 2 40 2 60 2 65 0 25 mr change.