公开(公告)号：US4954302A

公开(公告)日：1990-09-04

申请号：US238507

申请日：1988-08-31

申请人： Ernest K. A. Marchildon ,  Douglas W. Muzyka ,  Michel M. Dumoulin

发明人： Ernest K. A. Marchildon ,  Douglas W. Muzyka ,  Michel M. Dumoulin

IPC分类号： D01D1/06

CPC分类号： D01D1/06

摘要： A process for controlling the relative viscosity of synthetic yarns during production thereof. At least three pressure measurements are taken at three spaced locations in a transfer line for carrying molten polymer to a spinneret. Temperature and throughput of polymer in said transfer line are measured. An estimated relative viscosity of yarn produced by employing a predetermined correlation between pressure drop, throughput, temperature and relative viscosity is then calculated. A meaningful operating condition in the melting zone is adjusted in response to deviations in the estimated relative viscosity of said yarn from a desired relative viscosity of said yarn.

摘要翻译： 一种在制造合成纱线时控制合成纱线的相对粘度的方法。 在传送管线中的三个间隔位置处进行至少三次压力测量，以将熔融聚合物运送到喷丝头。 测量所述传输线中聚合物的温度和通量。 然后计算通过使用压降，通量，温度和相对粘度之间的预定相关性所产生的纱线的估计相对粘度。 响应于所述纱线的估计相对粘度与所述纱线的期望相对粘度的偏差而调整熔融区域中的有意义的操作条件。