公开(公告)号：US3816994A

公开(公告)日：1974-06-18

申请号：US34993073

申请日：1973-04-11

Applicant: BURLINGTON INDUSTRIES INC

Inventor： SMALL R

IPC: D02G1/02

CPC classification number: D02G1/0286

Abstract: Improvements in a conventional false-twist texturing process are disclosed which produce textured polyester yarn of improved quality (compared with that produced by conventional false-twist texturing) of the type obtained by known draw-texturing processes without the unstable feed yarn problems and feed yarn rupturing at start-up (and hence apparatus modification) problems incident thereto. The improvements comprise utilizing as the feed yarn in a conventional false-twist texturing process, a polyester yarn having (1) a spin-drawn orientation, free of mechanically-drawn orientation, with a birefringence within a range of the order of 0.02 to 012, (2) a percentage elongation-to-break within a range of the order of 60% to 200%, and (3) a zero-strength temperatue above approximately 235*C; and continuously positively feeding the feed yarn into and out of the texturing zone provided by the apparatus in performing the process, while maintaining the twistsetting temperature or heater temperature of the apparatus below the zero-stength temperature of the feed yarn, at feed rates into and out of the texturing zone in accordance with the formula DR > (OR) (EB/100 + 1)) wherein DR is the feed rate of the feed yarn out of the texturing zone divided by the feed rate into the texturing zone, or is a constant within a range of the order of 0.63 to 0.70, and EB is percentage elongation-to-break of the feed yarn.

Abstract translation: 公开了传统的假捻加工方法的改进，其通过已知的拉伸变形方法获得的类型，其具有提高质量的织构化聚酯纱线（与通过常规假捻加工产生的织物相比），而没有不稳定的进料纱线问题和进料纱线 在启动时（以及因此装置修改）在其中发生的问题破裂。 这些改进包括在传统的假捻织造工艺中作为进给纱线使用聚酯纱线，其具有（1）无机械拉伸取向的自旋拉伸取向，双折射率在0.02至012的范围内 ，（2）在60％〜200％的范围内的断裂伸长率 - 断裂百分比，（3）高于约235℃的零强度温度; 并且在进给过程中，在进给纱线的零长度温度保持低于进给纱线的零长度温度的同时，以进给速率将进给纱线连续地正确地进给和输出由设备提供的变形区域 根据公式DR>（OR）[EB / 100 + 1]]进入和离开变形区，其中DR是从纹理区域中的进给纱线的进给速率除以进入纹理区域的进料速率， 或者在0.63〜0.70的范围内为常数，EB为进给丝的断裂伸长率。