| 摘要 |
PURPOSE:To decrease the single filament breakage in the high-speed direct spinning and drawing of a polyester fiber, by carrying out the interlocking and collecting treatment of a polyester yarn drawn at a high speed, using a specific air guide. CONSTITUTION:Undrawn polyester yarn is taken up by the take-up roller 8 at a speed of >=1,500m/min, especially >=1,800m/min, and is successively drawn under a draw tension of 0.2-4.0g/d. In the course of drawing, the yarn is subjected to the interlocking and collecting treatment in a cylindrical air guide 14 (14'). The diameter (b) of the yarn path of the air guide 14(14') is 2-10mm., especially 3-8mm., the length (a) of the yarn path is 4-50mm., especially 6-25mm., and the number of nozzles of the fluid is 2-4. The number of filaments of the drawn polyester yarn is set to 90-500, especially 100-440, and the total fineness of the yarn is set to 450-2,000 denier, especially 500-1,800 denier.
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