Monofilamentary bicomponent core-sheath fibres

摘要

Core-sheath bicomponent monofilaments have a core containing a liquid crystal polymer and a homogeneous sheath containing a polyester. An Independent claim is also included for the production of the monofilaments by melt extrusion and cooling in a gas stream or liquid below the spinneret to a temperature at least 0-30 degrees C below the glass transition temperature of the sheath material, such that the ratio of the spinning speed (in volume/area - time) to haul-off speed is 1:5-30, preferably 1:(8-15). The monofilament may then be wound up and conditioned.