| 摘要 |
The invention relates to a process for making high-performance polyethylene multi-filament yarn comprising the steps of making a solution of ultra-high molar mass polyethylene in a solvent; spinning of the solution through a spinplate containing a plurality of spinholes into an air-gap to form fluid filaments, while applying a draw ratio DR<SUB>fluid</SUB>; cooling the fluid filaments to form solvent-containing gel filaments; removing at least partly the solvent from the filaments; and drawing the filaments in at least one step before, during and/or after said solvent removing, while applying a draw ratio DR<SUB>solid</SUB>, wherein in a draw ratio DR<SUB>fluid</SUB>=DR<SUB>sp</SUB>xDR<SUB>ag </SUB>of at least 50 is applied, wherein DR<SUB>sp </SUB>is the draw ratio in the spinholes and DR<SUB>ag </SUB>is the draw ratio in the air-gap, with DR<SUB>sp </SUB>greater than 1 and DR<SUB>ag </SUB>at least 1. The invention further relates to a spinplate having spinholes of specific geometry. |
