HIGH SPEED PROCESS FOR MAKING FULLY-ORIENTED NYLON YARNS AND YARNS MADE THEREBY

• Main Authors: OVERTON, FRANK, HUDSON, ROSS, ROGER, ALLEN, JAEGGE, WALTER, JOHN, MALONE, FRANCIS, JOSEPH, JR, STEELE, RONALD, EDWARD
• Format: Patent
• Language: English; French
• Published: 15.08.1996
• Edition: 6
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TEXTILES

A coupled spin-draw process for making a fully-oriented nylon yarn including extruding molten nylon polymer with a selected RV through a spinneret and cooling to produce a yarn. The yarn is withdrawn from the quench zone with a feed roll rotating at a speed of at least 4500 mpm. The process further includes cold drawing followed by relaxing the yarn using a steam intermingling jet and then winding up. Un procédé de fabrication conjugué par filage-étirage d'un fil de nylon pleinement orienté consiste à extruder un polymère de nylon fondu présentant une viscosité relative sélectionnée par une filière et à refroidir ce polymère pour obtenir un fil. Le fil est retiré de la zone de trempe à l'aide d'un rouleau délivreur tournant à une vitesse d'au moins 4500 m/min. Le procédé comprend également un étirage à froid suivi d'un relâchement du fil s'effectuant à l'aide d'un jet de mélange de vapeur et l'enroulement de ce fil.