| abstract |
Fibers are air-gap spun from a polymeric spinning mass comprising an aromatic polyamide (such as poly-p-phenyleneterephthalamide) by extrusion through a spinneret, passing through an air-gap, passage through a liquid (such as water), and exiting the liquid via an aperture which is variable in size. The use of such an aperture allows easier use of the equipment (especially the stringing up operation) and better fibre properties (such as tensile strength). |