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    • 16. 发明授权
    • Process for high-speed spinning of polyamides
    • 聚酰胺高速纺丝工艺
    • US4181697A
    • 1980-01-01
    • US913893
    • 1978-06-08
    • Gunter KoschinekDietmar Wandel
    • Gunter KoschinekDietmar Wandel
    • D01D5/08D01D5/088D01F6/60D01F7/04
    • D01F6/60D01D5/08D01D5/088
    • A method for draw-off of polyamide threads at very high speeds, say 1800 to 5000 m/min, while maintaining high quality threads and producing stable packages. The method comprises heat treating the threads, after an initial air-blast cooling, by passing them through a spinning duct the walls of which are heated to a preselected temperature below 140.degree. C. and above T.sub.min. Minimum calculated from the following equation: ##EQU1## wherein v=draw-off speed in m/min, and T.sub.a is a temperature value=O for spinning ducts over 1500 mm in length, or 6.degree. C. for each 100 mm reduction in duct length under 1500 mm. The heat treated threads are subjected to a finishing and wetting operation and then drawn off at the high speed.
    • 一种用于以非常高的速度(例如1800-5000m / min)抽出聚酰胺丝线的方法,同时保持高质量的丝线并产生稳定的包装。 该方法包括在最初的鼓风冷却之后,将丝线热处理通过纺丝管,其壁被加热到预定温度低于140℃和高于Tmin。 最小从以下公式计算:其中v =以m / min为单位的抽出速度,Ta是长度超过1500mm的纺丝管道的温度值= 0,或者每100mm减少6℃的温度值 管道长度在1500毫米以下。 经热处理的纱线经受精整和润湿操作,然后以高速抽出。
    • 20. 发明授权
    • Process for melt-spinning of synthetic polymers
    • 合成聚合物熔融纺丝方法
    • US4436688A
    • 1984-03-13
    • US253780
    • 1981-04-13
    • Gunter KoschinekDietmar WandelBernd KretschmannRolf Zinsser
    • Gunter KoschinekDietmar WandelBernd KretschmannRolf Zinsser
    • D01D5/092D01D5/08
    • D01D5/092
    • An improved process and apparatus for the melt-spinning of synthetic polymers are disclosed. The process and apparatus are preferably adapted to polymers such as polyamide 6, polyamide 66, polyester and their copolymers. The polymers are melt-spun in a spinneret and the resulting filaments are withdrawn at a speed between 600 and 6000 meters/min. The distance between the uppermost blow point of the cooling zone and the spinneret surface is selected so that the distance is within a range, the upper limit of which is defined by the relation B and the lower limit is defined by one of the relations A.sub.1 or A.sub.2 or A.sub.3 as follows:B=48.2 (log v)-109 (mm)A.sub.1 =34.4 (log v)-71 (mm)A.sub.2 =-32 (log v-3.356).sup.2 +34 (mm)A.sub.3 =-44 (log v-3.221).sup.2 +32 (mm),where v is the spinning withdrawal speed in meters/min.
    • 公开了用于熔融纺丝合成聚合物的改进方法和设备。 该方法和装置优选适用于聚合物如聚酰胺6,聚酰胺66,聚酯及其共聚物。 将聚合物在喷丝头中熔融纺丝,并以600至6000米/分钟的速度取出所得长丝。 选择冷却区域的最上吹点与喷丝头表面之间的距离,使得距离在一个范围内,其上限由关系B定义,下限由关系A1或 A2或A3如下:B = 48.2(log v)-109(mm)A1 = 34.4(log v)-71(mm)A2 = -32(log v-3.356)2 + 34(mm)A3 = -44 (log v-3.221)2 + 32(mm),其中v是以米/分钟为单位的纺丝提取速度。