Manufacturing method of spring yarn

摘要

The present invention relates to a method of manufacturing a spring yarn for producing a spring yarn having a soft feel and elasticity at a proper position and more particularly to a method of manufacturing a spring yarn And two pairs of twisted yarns (first and second yarns of the same yarn) twisted by the left and right yarns of about 1100 to 1350 times per meter (m) A settling step of setting the quadrupled yarn by the twisting process to a temperature of about 160-200C; ) Of about 2500 to 3500 times per one cycle of the spun yarn.