Capacity Calculation of Coating Machine

The working capacity of the coating pan machine is determined by the brim volume of the coating pan. Brim volume is the total volume of the water when the pan is fully filled at its current position. Brim volume is different from the total volume of the pan. Brim volume is given in the equipment manual.

Calculate the Maximum Capacity of the Coating Pan

Maximum Capacity of the Coating Pan in (in Kg) = Brim Volume (in Ltrs) x Bulk Density of Tablets (mg/ml)

Calculate the minimum Capacity of the Coating Pan

The minimum capacity of the coating pan is simply 60% of the maximum capacity as given above.

Minimum Capacity of coating Pan (in Kg) = Brim Volume (in Ltrs) x Bulk Density of Tablets (mg/ml) x 60/100

Example to Calculate Capacity of Tablet Coating Machine

For example:

48” coating machine pan generally has brim volume 160 ltrs

Bulk Density of Tablets = 620 mg/ml

Maximum Capacity of the Coating Pan in (in Kg) = Brim Volume (in Ltrs) x Bulk Density of Tablets (mg/ml)

Maximum Capacity = 160x620/1000 = 99.2 Kg 

Minimum Capacity of coating Pan (in Kg) = Brim Volume (in Ltrs) x Bulk Density of Tablets (mg/ml) x 60/100

Minimum Capacity = 99.2kg x60/100 = 59.52 Kg

The size and form (shape) of the tablets affect the coating machine’s maximum and minimum capacities because changes in tablet size and shape result in differences in bulk density. Large-size tablets have a lower bulk density than small tablets of the same composition.

Size of the coating pan	Minimum Batch Size	Maximum Batch Size
24”	8	15 Kg
32”	20	40 Kg
36”	30	55 Kg
37”	35	100 Kg
48”	90	170 Kg
60”	170	330 Kg