| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing potentially crimpy hollow yarns by a drawing machine, and for realizing high degree of crimps. SOLUTION: This method for producing hollow and potentially highly crimpy polyester yarns draws undrawn polyester yarns having a hollowness of 30% or more, impregnated with 0.3 to 5 wt.% of a lubricant, by a preheating roll kept at 80 to 85 deg.C, by a heating plate kept at 120 to 150 deg.C, and by a drawing roll at 600 to 900 m/min, in this order.
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