METHOD AND DEVICE FOR PRODUCING A COMPOSITE YARN

摘要

The invention relates to a method and device for producing a composite yarn from two synthetic yarns. The yarns are formed by melt spinning two separate bands of filaments from a polymer melt. One of the yarns is drawn and stretched after cooling and bundling the associated filaments into a partially oriented yarn (POY), and the second yarn is drawn and stretched after cooling and bundling the associated filaments into a fully drawn yarn (FDY). The two yarns are joined to form a composite yarn prior to winding. In order to be able to produce the composite yarn with as little machine usage as possible, according to the invention the partially oriented yarn is drawn after extruding and cooling at a drawing speed that is equal to a stretching speed of the fully drawn yarn. One of the last stretching galettes of the stretching unit can thus be associated directly with one of the spinning jets of the adjacent spinning device for drawing off the partially oriented yarn, wherein the stretching galette comprises an unstepped galette jacket for jointly guiding the two yarns.