Desorption Kinetics of Hydrolyzed Reactive Dyes in Continuous Wash Ranges
Continuous wash ranges clear hydrolyzed reactive dye by maximizing thermal diffusion and maintaining steep counter-current concentration gradients across wash stages.
Continuous Range Speed
Production Rate
Operational parameters defined by the linear distance a fabric travels through a finishing line per unit of time dictate the output of a dye house. The continuous range speed determines the dwell time of the textile inside chemical pads, steamers, washers, and drying ovens. Synchronization across different units in the range is necessary to prevent tension or slack.
This value is measured in meters per minute.
Thermal Equilibrium
Maintaining a steady velocity ensures that heat transfer remains consistent across the entire length of the batch. If the continuous range speed fluctuates, the moisture content and color fixation may become uneven. Overdrying occurs when the speed drops too low, while damp fabric exits the machine if the speed is too high for the burner capacity.
Dwell Time
Fixation of dyes or resins depends on a specific duration at a set temperature. The continuous range speed is the primary control for this duration.
Chemical Uptake
Immersion in the padding trough must last long enough for the liquor to penetrate the core of the yarn. A high continuous range speed reduces this contact time, which might lead to surface only dyeing. This limitation defines the maximum throughput for heavy fabrics like canvas or denim.