Abstract
Load-elongation (L-E) curves of undrawn and drawn nylon 6 filaments were plotted on the same abscissa to investigate their drawing behaviors.
1. The elongation at primary yield point of drawn filament was almost same as the drawing ratio of the filament.
2. Drawn filament at slow drawing speed had a higher effective drawing ratio due to higher degree of molecular orientation than that at high speed.
3. When drawn filament was relaxed at a given drawing ratio for various time length, the longer the time of relaxiation, the higher the degree of molecular orientation and the higher the primary yield point shifts according to the longer time length, as if the equivalent higher drawing ratio were applied.
