HOLLOW TRILOBAL CROSS-SECTION FILAMENTS

摘要

This invention relates to a trilobal filament having at least one axially extending void, preferably one axially extending void in each lobe, wherein each lobe has a composite curve profile having a first arm angle alpha and a second arm angle beta , the cross-section has a modification ratio of 2.4 to 5.0, and the total cross-sectional area is 5 to 15 percent void. In a further aspect, this invention is a spinnerette for producing a filament comprising at least one bore group, wherein the bore group has three legs divergent from each other by 130 DEG to 150 DEG and each leg includes two substantially parallel capillary sections and one nipple capillary section which extends to the outermost point of each leg.