to 100 m min the filaments are then drawn at a ratio greater than 3 0 at a temperature between 60 u00b0 c and 220 u00b0 c the oriented filaments are annealed at a temperature no greater than the melting point of the composition the monofilaments thus formed were subjected to various mechanical and thermal tests the physical properties were determined according to astm d2256 97 and the thermal shrinkage was established according to astm d204 with the temperature of the test adjusted to 176 7 u00b0 c 350 u00b0 f the loop tenacity was measured using a modification of astm d2256 97 where the single filament was replaced with two monofilaments looped through each other and clamped into the jaws of an instron tensile tester thermal analysis of the monofilaments was performed using a perkin elmer dsc 7 the melting point was determined by ramping the temperature from 30 u00b0 c to 280 u00b0 c at a rate of 20 u00b0 c min the sample was then held at 280 u00b0 c for 3 minutes before being cooled back to 30 u00b0 c at the rate of 20 u00b0 c min in order to determine the crystallization temperature on cooling the sample weight was maintained at approximately 10 mg for each test the invention will be illustrated in more detail with reference to the following example but it should be understood that the present invention is not deemed to be limited thereto the following example describes the formulation and the mechanical properties of a monofilament in accordance.