Continuous Scouring Range Design and Operation
topic
Continuous scouring ranges process fabric through steamer or J-box dwelling systems at 95 to 100 degrees Celsius with sodium hydroxide, surfactant, and sequestrant chemistry that saponifies natural waxes and oils, emulsifies non-cellulosic impurities, and removes spinning lubricants from cotton and synthetic fabrics, followed by hot and cold counter-current washing zones that rinse scoured fabric to pH below 7 before neutralisation.
Role
Achieves the high absorbency and cleanliness needed for level dyeing by removing natural waxes, pectin, proteins, and process lubricants that repel dye solution from fibre surfaces, with scoured fabric absorbency measured by sinking time test being the primary preparation quality indicator that predicts dyeing uniformity and dye uptake rate in subsequent exhaust or continuous dyeing processes.