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    • 2. 发明授权
    • Process of making elastane yarn
    • 制造弹性纱线的工艺
    • US06602453B1
    • 2003-08-05
    • US09720708
    • 2000-12-29
    • Ulrich ReinehrTilo SehmWolfgang AnderheggenToni Herbertz
    • Ulrich ReinehrTilo SehmWolfgang AnderheggenToni Herbertz
    • D01D506
    • D01F6/70Y10T428/2913Y10T428/2929Y10T428/2967
    • Described are a process for producing elastane yarn having a linear density of at least 2500 dtex by the wet spinning process and the thereby producible coarse linear density elastane yarn having a wide cross section and a low residual solvent content. The process comprises the steps of spinning an up to 35% strength by weight stable-viscosity elastane solution into a coagulation bath, washing and optionally drawing, drying by contact heating, setting, spin finishing and winding the yarn, the filaments leaving the coagulation bath passing around a diverting roller disposed just above the coagulation bath liquid, the as-spun filament linear density amounting to not more than 1% of the value of the final linear density, the jet stretch ratio being within the range from 0.5 to 50, the contact heating temperature being at least 220° C. and the contact time of the elastane yarn being at least 2 seconds.
    • 描述了通过湿法纺丝法制造线密度为2500dtex的弹性纤维的方法,从而生产出具有宽截面和低残留溶剂含量的粗制线性密度弹性纤维纱。 该方法包括以下步骤:将高达35%的重量比的稳定粘度的丙烯腈溶液旋转到凝固浴中,洗涤并任选地拉伸,通过接触加热,凝固,旋涂和卷绕纱线干燥,离开凝固浴的长丝 围绕设置在凝固浴液体正上方的转向辊,所述纺丝长丝线密度为不超过最终线密度值的1%,喷射拉伸比在0.5至50的范围内, 接触加热温度至少为220℃,弹性纤维的接触时间为至少2秒。