Process for producing polyester fibers
    2.
    发明授权
    Process for producing polyester fibers 失效
    生产聚酯纤维的方法

    公开(公告)号:US4917848A

    公开(公告)日:1990-04-17

    申请号:US295524

    申请日:1989-01-10

    CPC分类号: C08G63/80 D01F11/08 D01F6/62

    摘要: Process for producing polyester fibers of high tenacity and high modulus, by melt-spinning a polyester having an intrinsic viscosity of not lower than 0.3, to obtain extruded filaments of low orientation having a birefringence not higher than 10.0.times.10.sup.-3, post-polymerizing the filaments in a heating medium, and subjecting the filaments to multi-stage drawing in at least two stages.

    摘要翻译: 通过对特性粘度不低于0.3的聚酯进行熔融纺丝来制造高强度和高模量的聚酯纤维的方法,以获得双折射率不高于10.0×10-3的低取向挤出长丝,后聚合 在加热介质中的长丝,并且使丝经历至少两个阶段的多级拉伸。