Padding Mangle Design and Wet Pickup Control
topic
Padding mangles squeeze fabric to defined wet pickup percentage of 60 to 100 percent through two nip rolls at hydraulic pressures of 2 to 8 bar, with roll hardness, diameter, and nip gap controlling the wet pickup level that must be consistent across the full fabric width and throughout the processing run for uniform dye concentration application, with edge-to-edge wet pickup variation below plus or minus 1 percent being required for shade uniformity.
Role
Controls the dye concentration applied to the fabric through wet pickup management that is the primary variable governing dye concentration in the pad-fixed fabric, with across-width wet pickup uniformity being the most critical parameter for achieving level dyeing in continuous processes where any wet pickup variation translates directly and proportionally into shade variation in the fixed fabric.