POLYAMIDE YARN AND INTEGRATED STRETCH SPINNING METHOD FOR MANUFACTURING SAME

摘要

The invention discloses a stretch spinning method for manufacturing a multifilament yarn and a polyamide yarn with a high shrinkage force. It concerns more particularly a novel polyamide yarn obtained by an integrated stretch spinning method. Yarn stretching is effected by passing the yarn (1) over two rolls (7, 8) arranged in such manner that the yarn describes an S. The yarn forms an open loop on each roll. It is heated by the device (10) to its stretching temperature, then after stretching it is subjected to a relaxation treatment by being heated with the nozzle (11) before being coiled on a reel.