METHOD AND APPARATUS FOR HEAT TREATMENT OF YARN UNDER RELAXATION

摘要

PROBLEM TO BE SOLVED: To provide both a method and an apparatus for heat-treating a yarn under relaxation, having a compactness and a high heat transfer efficiency, capable of traveling the yarn at a high speed. SOLUTION: A yarn is heat-treated under relaxation by a heater composed of a heating roller 6a and an auxiliary yarn winding tool 6b arranged between yarn feed rollers 5 and take-off rollers 7 having a lower speed than that of the feed rollers 5.