Continuous process for the production of polyacrylonitrile filaments and
fibers
    21.
    发明授权
    Continuous process for the production of polyacrylonitrile filaments and fibers 失效
    连续生产聚丙烯腈长丝和纤维的方法

    公开(公告)号:US4622195A

    公开(公告)日:1986-11-11

    申请号:US586578

    申请日:1984-03-06

    CPC分类号: D01F6/18 D02G1/122

    摘要: Polyacrylonitrile filaments and fibers may be obtained without interruption by spinning the spinning solution into a hot-air spinning duct, washing, drawing, crimping, preparing, steaming, drying cooling and, optionally, cutting at a take-off rate kept at 150 to 400 m/minute and for a tow weight of from 10 to 100 g/m when(a) the washing process is carried out in several stages on the countercurrent principle and a vibrating duct is used for transporting the spun tow through the washing process,(b) drawing is carried out before and/or after washing in a steam atmosphere at 100.degree. to 120.degree. C.,(c) crimping is carried out in an aerodynamic crimping unit using a hot, gaseous medium under a pressure of from 5 to 16 bars and at a temperature in the range from 50.degree. to 210.degree. C.,(d) the preparation is continuously applied to the tow before, during or after crimping,(e) for steaming, the tow is transported through a steaming apparatus in folded form and in the absence of tension on a vibrating duct and, at the same time, treated with steam at 100.degree. to 120.degree. C.,(f) finally, the tow is dried in folded form on a belt dryer using hot air at 60.degree. to 180.degree. C., subsequently cooled with cold air to temperatures below 50.degree. C. and, optionally, delivered to a cutting machine.

    摘要翻译: 可以通过将纺丝溶液旋转成热风纺丝管,洗涤,拉伸,卷曲,制备,蒸煮,干燥冷却和任选地以保持在150至400的起飞速率进行切割而获得聚丙烯腈长丝和纤维 (a)按照逆流原理在数个阶段进行洗涤过程,并且使用振动管道通过洗涤过程输送纺丝丝束(m / min,丝束重量为10-100g / m 2) b)在100-120℃的蒸汽气氛中洗涤之前和/或之后进行拉伸,(c)在空气动力学压接单元中使用热气体介质在5〜 16巴,温度范围为50至210℃,(d)在卷曲之前,期间或之后将制品连续施加到丝束上,(e)蒸汽时,丝束通过蒸汽装置 以折叠的形式和在没有紧张的情况下 振动管道,同时用100-120℃的蒸汽处理,(f)最后,使用60℃至180℃的热空气将丝束以折叠形式在带式干燥机上干燥,随后 用冷空气冷却到低于50℃的温度,并且任选地被输送到切割机。

    Method for producing textured filament yarns with improved yarn
qualities from preorientated polyamide 6
    22.
    发明授权
    Method for producing textured filament yarns with improved yarn qualities from preorientated polyamide 6 失效
    从预取向聚酰胺6提高纱线质量的织造长丝纱线的方法6

    公开(公告)号:US4103480A

    公开(公告)日:1978-08-01

    申请号:US776412

    申请日:1977-03-10

    IPC分类号: D02G1/08 D02G1/02 D02G3/04

    CPC分类号: D02G1/0286

    摘要: The invention is related to a method for producing texturized yarns from polyamide 6 which have small parts of a transitional structure in the .alpha.-modification in addition to the predominant .alpha.-modification, using a rapidly spun yarn in the .alpha.-modification, wherein a yarn with an elongation of 40 to 100% and a density of 1.130 to 1.140 is texturized at texturizing speeds of from 4000 to 1600 m/min at a temperature of from 170.degree. to 220.degree. C while maintaining a constant thread tension ratio of twister outlet to twister inlet of from 1 : 1.0 to 1 : 1.5 by means of a frictional twister while simultaneously stretching in a ratio of from 1 : 1.05 to 1 : 1.5.

    摘要翻译: 本发明涉及一种用聚酰胺6制造增稠纱线的方法,该方法除了主要的α-改性之外,在α-改性中具有小部分过渡结构,其中使用在α-改性中的快速纺丝纱线,其中纱线 伸长率为40〜100%,密度为1.130〜1.140,在170〜220℃的温度下,以4000〜1600m / min的组织化速度进行组织化,同时保持捻线器出口恒定的线张力比 扭转器入口通过摩擦扭转器为1:1.0至1:1.5,同时以1:1.05至1:1.5的比例进行拉伸。