| 摘要 |
<p>PURPOSE:A specific amount of a hydrophobic silica made by the dry method, with alkyl groups on its surface and blocked silanol groups, having a specific particle size on the average in its primary particles is added to polyester, the mixture is subjected to high-speed spinning, then eluted on the surface to give the titled fiber inhibiting the fiber surface from roughening by cagulating particles. CONSTITUTION:Polyester containing 0.12-1.0wt% of hydrophobic silica particles made by the dry method, which have less than 100mmu average size in primary particles, have alkyl groups on the particle surfaces and blocked silanol groups on the surfaces, is extruded through the spinneret 11, passed through the cooling zone 12 to effect solidification and give yarn Y. A finishing oil is applied to the yarn by means of the applicator 13, the first goddet roller 14 and the second goddet roller 15 are used to regulate its yarn route and yarn speed and the yarn is wound up around the winder 16 at a speed of higher than 5,000m/min. Further, the resultant yarn is treated with a solubilizing or decomposing solvent to elute the surface, thus producting the objective yarn.</p> |
