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Manufacturing method of polyester fine denier multifilament and polyester fine denier multifilament yarns
Manufacturing method of polyester fine denier multifilament and polyester fine denier multifilament yarns
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机译：聚酯细旦复丝和聚酯细旦复丝的制造方法
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摘要
Disclosed is to provide a manufacturing method for polyester fine denier multifilament. The length of a protective delay shroud of the radial outer-flow quenching system used in melt spinning process for manufacturing fine hollow polyester filaments is from 2 to 20 mm, and the length of quenching air tube is from 15 to 40 centimeters. The velocity of quenching air is between 0.2 m/sec to 0.6 m/sec. For the layout of the spinneret orifices, the diameter difference of outermost layer orifice and the innermost layer orifice is set less than 20 mm; and the distance between the diameter of innermost orifice layout and the diameter of quenching air tube is at least 12 and less than 33 mm. The orifice density of spinneret layout (orifice density) is set as 7∼21 orifices per square centimeter.The fine polyester filaments produced in this invention has 0.3 to 2.0 denier per filament (d.p.f), uster half inert value (u% 1/2 inert) less than 0.3%, variation of thermal stress in spindles less than 2%, and have an excellent dyeability.
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机译：公开了提供聚酯细旦复丝的制造方法。用于制造中空聚酯细丝的熔融纺丝工艺中使用的径向外流淬火系统的保护性延迟罩的长度为2至20 mm，淬火空气管的长度为15至40厘米。骤冷空气的速度在0.2 m / sec至0.6 m / sec之间。对于喷丝板孔的布置，最外层孔和最内层孔的直径差被设定为小于20mm。最内孔口布局的直径与淬火空气管的直径之间的距离至少为12且小于33 mm。喷丝板布局的孔密度（孔密度）设定为每平方厘米7〜21个孔。在本发明中生产的聚酯细丝具有每根长丝0.3-2.0旦尼尔（dpf），半惰性值（u％1/2惰性）的吸水率小于0.3％，纺锤中的热应力变化小于2％，并且具有极好的染色性。
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