Winch and Overflow Dyeing Machines
topic
Winch dyeing machines process fabric in rope form lifted over a rotating reel through an open or pressurised oval trough at liquor ratios of 15 to 30 litres per kilogram, with the rope transit speed and reel speed determining the mechanical action and creasing tendency, while overflow machines use liquor flow to transport fabric without mechanical contact in very gentle processing suitable for delicate knitted fabrics at liquor ratios above 20.
Role
Provides the most accessible and versatile exhaust dyeing format for small to medium fabric lots in rope form at moderate investment cost, with winch machines being widely used in smaller dyehouses and developing market textile operations for their operational simplicity and flexibility across fibre types, while their high liquor ratio is increasingly limiting their competitiveness versus lower liquor ratio jet machines for environmental and water efficiency reasons.