2 4 3 0 3 5 3 5 2 4 3 5 10 5nozzel bore mm 0 25 0 25 0 25 0 3 0 25 0 25 0 3 0 3spinning air temperature u00b0 c 300 290 350 350 300 300 155 200specific air quantity nm sup 3 kg solution 1 43 1 63 1 15 1 38 1 43 1 3 8 5 26shaft temperature u00b0 c 180 190 200 200 190 195 120 200spinning drawing off m min 230 315 252 200 820 100 600 300dmf content 11 10 22 23 24 37 16 1titre dtex 10 u00b1 0 5 5 9 u00b1 0 3 20 u00b1 1 35 u00b1 1 5 6 8 u00b1 0 5 18 9 2 8strength cn dtex 0 58 u00b1 0 1 0 58 u00b1 0 1 0 64 u00b1 0 1 0 56 u00b1 0 1 0 55 u00b1 0 1 1 0 u00b1 0 2 0 68 0 9elongation 102 u00b1 12 89 u00b1 8 125 u00b1 13 130 u00b1 14 50 u00b1 10 159 82 450errors per 100 000 lt 10 lt 8 lt 10 lt 5 lt 10 lt 5 lt 5 lt 5__________________________________________________________________________ a copolymer corresponding to example 1 b 100 of pure polyacrylonitrile c segmented polyurea polyurethane the conditions of example 1 are all adhered to only the velocity profile of the radial flow from the air distributors is changed by changing the air distributor in fig6 some blasting profiles of the radial flow from the air distributors are brought together profile 1 is thereby correlated with fig2 profile 3 with fig3 profile 3 with fig4 and profile 4 with fig5 in this drawing the schematic representation.