Available batch range
1kg to 600kg
Auto Coater - Tablet Coating System
Ensures uniform particle size reduction and de-lumping of granules with a gentle milling action that preserves product integrity and flow properties. All of this without the heat, friction, or degradation of conventional mills.
Film Coating
Enteric Coating
Sugar Coating
PLC/SCADA
WIP/CIP Ready
40+ installations
Engineered for coating precision
Every component of the GEM Auto Coater is designed to deliver uniform coat weight, batch-to-batch reproducibility, and full GMP compliance, at any scale.
Perforated pan drum
Fully perforated stainless steel drum allows inlet air to pass through the tablet bed and exhaust through the pan perforations – achieving uniform drying and efficient solvent removal across the entire batch.
Multi Gun Spray systems
Twin-fluid or airless spray guns mounted on a stainless manifold. Adjustable spray rate, atomisation pressure, and pattern width per gun – ensuring even distribution across the tablet bed at every pan fill level.
Integrated AHU
High-efficiency air handling unit with HEPA-grade inlet filtration, steam or electric heating, dehumidification, and chilled water cooling. This helps in delivering fully conditioned process air at a controlled temperature and humidity.
PLC / SCADA automation
Fully programmable recipe management with up to 500 stored coating recipes. Real-time process trending, alarm management, batch reporting, and FDA 21 CFR Part 11-compliant electronic records.
Inlet / exhaust air balance
Automatic inlet and exhaust airflow balancing maintains consistent negative pressure within the drum — preventing coating mist escape, maintaining cleanroom conditions, and ensuring reproducible drying profiles.
Automated WIP / CIP
Spray nozzles inside the drum and manifold for validated wash-in-place cycles. Quick-release spray bar and gun assembly enables full product changeover with minimal downtime and zero cross-contamination risk.
Specifications
Materials & construction
| Product contact parts | SS 316L, electropolished |
| Non-contact frame | SS 304 |
| Internal surface finish | Ra ≤ 0.4 µm |
| Drum type | Fully perforated, side-vented |
| Baffles | Removable GMP baffles, SS 316L |
| Seals | FDA-approved silicone / PTFE |
Process parameters
| Pan diameter range | 10 mm – 1800 mm |
| Batch charge range | 1 kg – 600 kg |
| Pan speed | 1–20 RPM (VFD controlled) |
| Inlet air temperature | Ambient to 80 °C |
| Spray system | Twin-fluid / airless, multi-gun |
| Spray rate control | Peristaltic pump, gravimetric opt. |
| Exhaust air handling | VFD fan with differential control |
Regulatory Compliance
cGMP complaint
Atex / FLP option
FDA 21CFR Part 11
EU GMP
WHO GMP
IQ/OQ Docs
Every coating type. One machine.
The GEM Auto Coater handles the full spectrum of pharmaceutical tablet coating, from simple film coatings to complex functional coatings for controlled drug delivery.
Film coating
The most widely used coating method — applies a thin, uniform polymer film layer to improve appearance, taste masking, stability, and ease of swallowing.
- HPMC, HPC, Eudragit, PVA-based formulations
- Precise coat weight control ±0.5%
- Colour and logo printing compatibility
- Immediate-release profile maintained
Enteric coating
Acid-resistant coating that protects the tablet through the stomach and releases active ingredient specifically in the small intestine — critical for acid-sensitive APIs.
- Cellulose acetate phthalate (CAP), Eudragit L/S
- pH 5.5 to 7.0 dissolution triggering
- NSAIDs, proton pump inhibitors, probiotics
- USP dissolution test method compliant
Sugar coating
Classic multi-layer sucrose coating process for taste masking, improved appearance, and consumer appeal — commonly used in OTC and traditional formulations.
- Sealing, sub-coating, smoothing & colouring layers
- PLC-controlled syrup addition and drying cycles
- Polishing and glossing capability
- Compatible with conventional pan panning
Modified & sustained release
Functional coatings that control the rate, timing, and location of drug release, which is essential for once-daily dosing, chronotherapy, and colonic drug delivery.
- Ethylcellulose, Eudragit RS/RL, Aquacoat
- Extended-release, delayed-release, pulsatile
- Coat weight precision critical – ±0.3% tolerance
- Compatible with multi-particulate pellet systems