| abstract |
The invention relates to a process for making a polyethylene multi-filament yarn comprising the steps of na) spinning multiple filaments from a solution comprising between 0.5 and 30 mass% of ultra high molecular weight polyethylene in a solvent; nb) cooling the filament obtained to form gel filaments; nc) removing at least partly the solvent from the gel filaments; nd) drawing the filaments in at least one drawing step with a draw ration of more than 15 before, during or after removing solvent to a strength of at least 1 GPa, characterized in that the solution further comprises between 0.1 and 7 mass% of a sorbitol derivative. nThe invention further relates to a high performance polyethylene multi-filament yarn having a strength of at least 1 GPa, characterized in that the yarn comprises between 0.1 and 5 mass% of a sorbitol derivative. |