MELT SPINNING AND WINDING OF NYLON 66 YARN

摘要

PURPOSE:To obtain yarn having improved structural stability, good level dyeing, providing processed yarn having improved crimping characteristics, in good operation efficiency of yarn preparation stably, by subjecting a nylon 66 polymer containing a specific amount of a copolymer component to melt spinning, cooling and solidifying it, winding it at a high rate. CONSTITUTION:A copolymer component (e.g., epsilon-caprolactam, etc.) is added to hexamethylene diammonium adipate in such a way that a ratio (W mol%) of the copolymer component to repeating unit of nylon 66 is in a range shown by the formula I and formula II, and monomers are polymerized. The prepared nylon 66 polymer is melted, and spun in such a way that an extruded amount per single hole during spinning is =1g/min. The yarn is cooled and solidified, and wound at a winding rate (Vm/min) in a range of 4,000=V=8,000.