Tablet Coating Machine

A Tablet Coating Machine is specialized pharmaceutical equipment used to apply a thin, uniform polymer-based or sugar-based coating onto compressed tablets. The coating serves multiple purposes: protecting the active ingredient, masking taste/odor, controlling drug release (e.g., enteric or sustained release), improving appearance, and enhancing swallowability.

In order to prevent heartburn, coating machines have an interlocking electrical circuit that only activates the heaters when the blower is turned “on.” To prevent the accumulation of dirt or contaminated medication, the coating SS Pan Mouth ring is soldered at its rim cavities. Standard equipment includes an induction motor, a helical gearbox, and all electrical controls from reputable manufacturers. On-demand thermostat control is available. Gearboxes and electrical components, including motors, can be made flameproof or explosion-proof per customer request. We produce coating pans that range in size from an 8-inch small coating pan to a 48-inch industrial coating pan.

Tablet Coating Machine Video

Key Components

1. Coating Pan/Drum

   • Stainless steel, perforated (for film coating) or solid.

   • Rotates at 2–30 RPM depending on batch size.

2. Spray System

   • Peristaltic pump + spray guns (air-atomized or airless).

   • Precise control of spray rate and pattern.

3. Air Handling Unit (AHU)

   • Supplies heated, dehumidified process air.

   • Exhaust removes solvent vapors (aqueous or organic).

4. Baffles

   • Inside the pan to ensure tablet mixing and uniform exposure to spray.

5. Control System (PLC/HMI)

   • Automates parameters: inlet temp, spray rate, pan speed, airflow.

Coating Process Steps

1. Loading: Tablets loaded into pan (50–80% fill volume)

2. Pre-heating: Pan rotates; hot air warms tablets (35–45°C)

3. Spraying: Coating solution sprayed in pulses

4. Drying: Hot air (50–80°C) evaporates solvent

5. Curing (optional): Extended drying at lower temp

6. Unloading: Coated tablets discharged

Advantages

• Uniform coating thickness

• Improved product stability

• Compliance with GMP standards

• Scalable from lab (1 kg) to production (300 kg)

Exclusive Features of Tablet Coating Pan

• Compact GMP Model.

• Sanitary design of pan

• Excellent tablet rolling welded baffle.

• Spraying system with peristaltic pump and solution tank (Optional)

• Quick dismantle & adjustment of spray guns (Optional)

• Effective coating of tablets

• Adjustment angle of pan

• Interchangeable pans from higher to lower capacity

• Exhaust blower with motor (Optional)

• IQ/OQ documentation can be provided.

• PLC system with Graphical User Interface can be offered.

Working Principle of Tablet Coating Pan

The coating round pot in the machine is rotated on variable speeds and the coating material is sprayed by the spraying system provided in the machine. The spraying process is always in line with the technological requirements and protocols in place. The coating round pot rotates and the hot air blower system of the machine supplies hot air at the same time. As a result the surface of medicines gets dried with an even coating.

For more information related to our conventional coating pan feel free to drop us a line.

Technical Specification of Tablet Coating Pan

* Power voltage can be adjusted as per customer’s domestic power voltage requirements.
* Rights of technical improvements & modification reserved.
* Illustrations & dimensions are shown for information purpose only.