Why does powder packaging often experience dosing fluctuations?
• Bulk density and flowability shift with humidity; screw volumetric fill varies over ±2% and triggers alarms.
• Powder bridging or rat-holing in the screw feeder and hopper destabilizes dosing cycle time; add agitator or vibrator.
• Dust buildup on load cells causes zero drift over 0.5 g; clean and recalibrate every shift.
• Residual air in the film tube blows powder during heat-sealing, causing net content deviation over 1%.
• Use servo-driven screw with gravimetric feedback loop to hold dosing error within ±1%.
• Powder bridging or rat-holing in the screw feeder and hopper destabilizes dosing cycle time; add agitator or vibrator.
• Dust buildup on load cells causes zero drift over 0.5 g; clean and recalibrate every shift.
• Residual air in the film tube blows powder during heat-sealing, causing net content deviation over 1%.
• Use servo-driven screw with gravimetric feedback loop to hold dosing error within ±1%.