HIGH ELASTIC SYNTHETIC FIBER YARN DYEING METHOD AND HIGH ELASTIC SYNTHETIC FIBER YARN MANUFACTURED THEREBY AND CHEESE YARN MANUFACTURING DEVICE THEREFOR

Disclosed is a high elastic synthetic fiber yarn dyeing method in which a synthetic fiber false-twist yarn is thermally shrunk in advance to manufacture a re-wound cheese yarn and add the same to the dyeing process to increase processability and dyeing efficiency. The method comprises the steps of: combining the synthetic false-twist yarn to manufacture a false-twist combined yarn; spraying steam at a temperature of 80-100°C to thermally shrink the yarn by 30-70% while the false-twisted combined yarn is unwound; winding the thermally shrunken yarn on a dyeing bobbin with a tensionless force; and dyeing the yarn. COPYRIGHT KIPO 2018 ...