MELT SPINNING METHOD AND SPINNING SPINNERET OF FLAT CROSS SECTION SYNTHETIC FIBER

摘要

The present invention relates to a melt spinning method of a flat cross-section synthetic fibers, in particular polyamide fibers for producing a covering yarn for stockings, by using a multi-filament mold punctured the discharge hole of the slit type, In the step of melt spinning the polyamide-based multifilament on the phase and simultaneously supplying and cooling the cooling wind by a one-side blowing method, the long axis direction of the flat cross section is the direction of the cooling wind and 5. More than 25 It relates to a melt spinning method of the flat cross-section polyamide fibers with improved spinning stability and uniformity characterized in that spinning through the discharge holes arranged below.;In addition, the present invention is the long axis direction of the discharge hole is the angle ( ) 5 25 It comprises a molten spinneret of flat cross-section synthetic fiber perforated to be.