PRODUCTION OF MODIFIED CROSS-SECTION COMBINED FILAMENT POLYESTER YARN

摘要

PURPOSE:To obtain the titled combined filament yarn having high quality and free from yarn unevenness and loop, in high stability, by extruding a pair of undrawn fiber filament groups from the same spinneret in molten state, cooling with cooling gas stream, doubling the filament groups, introducing into a hot- fluid zone, taking up at a high speed, and drawing under heating. CONSTITUTION:A modified cross-section combined filament yarn composed of two kinds of filament groups having different cross-sectional shapes is produced by (1) extruding two filament groups 2 through the same melt-spinning spinneret 1, (2) cooling the filaments with cooling air stream, (3) doubling the groups with a collection guide 41, (4) separating the accompanying gas stream from the yarn with the gas-stream separator 5, (5) introducing the yarn into the hot-fluid zone 6 to effect the drawing under heating, (6) treating with a size and an oil with a collecting guide 42 and a spinning oil applicator 7, and (7) winding in the form of a package 11 via the take-up rollers 8, 9.