Operational boundaries of tablet Coating -film/enteric

1. Inlet air
• Volume
• Temperature
• Moisture control
Exhaust Air
• Volume
• Temperature
• Moisture content
Control
system
Coating formulation
• Volatility
• Tackiness
• Viscosity
• Surface tension
• Solid content
• Mechanical properties
Spraying system
• Gun design
• Air cap design
• Fluid nozzle design-spray pattern
• Number of spray guns
• Angle of spray guns to tablet bed
• Distance of guns from tablet bed
• Spray rate
• Atomising air pressure /Volume
• Pattern air pressure/volume
Coating pan
• Pan diameters
• Pan speed
• Tablet charging
• Bed porosity
• Surface area
• Mixing baffles
• Perforated area
• Bed temperature
Tablet core
• Size
• Shape
• Hardness
• Friability
• Surface roughness
• Surface chemistry
• Tablet property
Operation boundaries of tablet coating – film / enteric
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