False twist-crimped polyester yarns production
    2.
    发明授权
    False twist-crimped polyester yarns production 失效
    假捻卷曲聚酯纱生产

    公开(公告)号:US3936999A

    公开(公告)日:1976-02-10

    申请号:US425995

    申请日:1973-12-19

    IPC分类号: D02G1/02

    CPC分类号: D02G1/0286

    摘要: A false twist-crimped polyester yarn having a density (d) of 1.3800.ltoreq.d.ltoreq.1.3970 (g/cm.sup.3) and total percentage crimp (TC) of TC 30% is produced by false twisting a polyester multi-filament having a birefringence (.DELTA.n) of 0.030.ltoreq..DELTA.n.ltoreq.0.145 while heat setting the filament in the twisted state at 160.degree. to 210.degree. at a draft (dr) which satisfies the following equation:-150(.DELTA.n) + 17.ltoreq.dr.ltoreq.0.9 .times. 10.sup.4 (.DELTA.n.sup.2)-29 .times. 10.sup.2 (.DELTA.n)+248.

    摘要翻译: 通过假捻加捻密度(d)为1.3800(d)= 1.3970(g / cm 3)和TC 30%的总卷曲百分比(TC))的假捻卷曲聚酯纱, 同时将纤维在160°至210°的捻合状态下,以满足以下等式的牵伸(dr)进行热定形:0.030