Electrolyte Dosing Rates in Low Liquor Jet Dyeing Heavy Cotton Duck
Progressive exponential electrolyte dosing prevents surface strike and core un-dyed voids when reactive dyeing heavy cotton duck in low liquor ratio jet machines.
Jet Rope Speed Synchronization
Velocity Alignment
Mechanical coordination between the driven reel and the liquid nozzle velocity maintains a constant cloth speed during overflow dyeing. When this balance is achieved, jet rope speed synchronization prevents physical damage to delicate knitted and structured fabrics. This process ensures that the fabric rope moves at a speed that matches the liquor flow rate.
Tension Reduction
Minimizing the drag on the fabric rope prevents elongation and surface abrasion during high-temperature cycles. When jet rope speed synchronization is maintained, the fabric experiences minimal mechanical pull, preserving yarn structure and stitch definition. This gentle handling prevents creases in polyester and nylon fabrics.
Dyeing Uniformity
Regular circulation of the fabric rope ensures even exposure to the dye liquor. Without correct jet rope speed synchronization, fabric dwells in the bottom of the kier too long, leading to temperature differences and blotchy dyeing. Continuous movement guarantees that dye molecule exhaustion remains uniform throughout the batch.
This uniform exhaustion prevents the formation of horizontal bandings and shade variations along the length of the fabric roll.
Nozzle Calibration
Frequency inverters adjust the drive motor speeds dynamically based on encoder feedback from the guide roller. Operators verify jet rope speed synchronization by monitoring fabric turnaround times and adjusting the nozzle pressure settings.