公开(公告)号：US4731217A

公开(公告)日：1988-03-15

申请号：US764840

申请日：1985-08-09

申请人： Siegmar Gerhartz ,  Rolf Kalthoff ,  Siegfried Putsch

发明人： Siegmar Gerhartz ,  Rolf Kalthoff ,  Siegfried Putsch

IPC分类号： D01D7/00 ,  D01D10/02 ,  D01D5/08 ,  B65H54/38

CPC分类号： D01D7/00 ,  D01D10/02

摘要： A method for melt spinning thermoplastic filament yarn is disclosed, wherein a plurality of filaments are withdrawn from a spinneret, and combined to form an advancing yarn. The advancing yarn is traversed onto a rotating bobbin to form a wound package, and the traversing speed is periodically rapidly changed so as to avoid the formation of undesirable patterns or ribbons. In addition, the advancing yarn is heated so as to lower its modulus of elasticity, so that the yarn tension and yarn denier remain within an acceptable range of variation during each change of the traversing speed.

摘要翻译： 公开了一种熔融纺丝热塑性长丝纱线的方法，其中多根长丝从喷丝头中取出，并组合形成前进纱线。 将前进纱线横过旋转筒管以形成缠绕包装，并且周期性地快速地改变运动速度，以避免不希望的图案或带状物的形成。 此外，前进纱线被加热以降低其弹性模量，使得纱线张力和纱线旦数在每次移动速度变化期间保持在可接受的变化范围内。

公开(公告)号：US4504021A

公开(公告)日：1985-03-12

申请号：US476852

申请日：1983-03-18

申请人： Heinz Schippers ,  Erich Lenk ,  Gerhard Martens ,  Manfred Mayer ,  Werner Pieper ,  Siegfried Putsch

发明人： Heinz Schippers ,  Erich Lenk ,  Gerhard Martens ,  Manfred Mayer ,  Werner Pieper ,  Siegfried Putsch

IPC分类号： B65H54/38

CPC分类号： B65H54/38 ,  B65H2701/31

摘要： A method and apparatus for producing a ribbon free randomly wound yarn package is disclosed, and wherein a plurality of critical winding ratios at which undesirable pattern formations or ribbons would normally occur are determined and stored in a microprocessor control unit. During the winding operation, the spindle speed and traversing frequency are monitored by sensors and are transmitted to the control unit, and the control unit computes the optimum time for rapidly changing the traversing frequency so that the actual winding ratio moves rapidly through each of the approaching critical winding ratios. The original traversing frequency is re-established after having passed beyond each of the critical winding ratios.

摘要翻译： 公开了一种用于生产无带状无规卷绕纱线卷装的方法和装置，并且其中通常发生不期望的图案形成或带状物的多个临界卷绕比率被确定并存储在微处理器控制单元中。 在卷绕操作期间，主轴转速和运行频率由传感器监控，并被传送到控制单元，控制单元计算快速变化运行频率的最佳时间，使实际的卷绕速度快速地通过每个接近 关键卷绕比。 在超过每个临界卷绕比之后，重新建立原始的运行频率。