| 摘要 |
PURPOSE:A yarn extruded from the spinneret is cooled with wind blowing perpendicularly to the yarn-running direction in the first step, then, while the yarn temperature stays in a certain range, the yarn is cooled with another wind blowing in the reverse direction in the second step, thus enabling high-speed production of synthetic fiber without melt-sticking between filaments. CONSTITUTION:The polymer is melted, extruded through the distributor 2 in the pack and the spinneret into the yarn Y and the yarn is cooled, in the first step, by blowing a wind from the direction A perpendicular to the yarn-running direction Sn. Subsequently, while the yarn temperature is in the range from 20-115 deg.C lower than the spinning temperature, the second-step cooling is effected by blowing a different wind blowing in the reverse direction B to the direction A to give the objective yarn.
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