en.Wedoany.com Reported - Global engineering technology company GEA has launched the ConsiGma® FC Lab Coater (CFC Lab), addressing bottlenecks in traditional tablet coating processes such as slow batch cycles, high material consumption, and the disconnect between laboratory results and production scale.
Traditional tablet coating drums operate at speeds as low as 5 RPM, creating a rolling bed to apply the coating solution. This method has significant drawbacks at laboratory scale: long batch cycle times, high material waste, and unsuitability for the rapid iterations required by Design of Experiments (DoE). Operators often find that parameters optimized in the lab cannot be transferred to production equipment, leading to costly re-validation work. Soft or friable tablet cores can suffer abrasion from prolonged tumbling in traditional drums, causing yield loss and uneven coating, whereas the CFC Lab's gentle processing environment accommodates mechanically sensitive tablets without the need to harden or reformulate the tablet cores. For formulators handling highly potent active pharmaceutical ingredients (HPAPIs), the sealing requirements of traditional open-pan systems add complexity and cost.
Based on GEA's ConsiGma® coating technology, the CFC Lab employs a different process approach: combining high drum rotational speed with an air knife mechanism to separate and rotate each tablet as it passes through the spray zone. Tablets are coated in a free-fall cascading flow, receiving 90 micro-coatings per minute, with each coating dried immediately before the next application, achieving highly uniform 360° coating in a single pass. This continuous flight method achieves coating uniformity at just 2% weight gain, compared to the 3% typically required by conventional processes, thus reducing coating material consumption by 33%. The entire batch cycle is compressed to as short as 6 minutes, allowing a complete Design of Experiments to be finished within a single working day.
Mark Rowland, Director of Product Management for Solid Dosage at GEA, noted that traditional coaters "can cause abrasion for softer tablets, leading to yield loss and uneven coating." He added that this new method "can coat products previously considered impossible to coat, such as shaped tablet cores."
The CFC Lab eliminates the scale-up issues inherent in traditional development. All ConsiGma® film coaters share the same drum diameter; to accommodate larger production batches, the depth of the coating wheel can be increased and additional nozzles added, but the fundamental process geometry remains unchanged. The CFC Lab is equipped with an 80 mm wheel and can handle batch sizes from 0.5 to 1.5 kg. Using the same drum diameter, production sub-batches can be linearly scaled up to 9 kg without increasing the 6-minute sub-batch process time. This means process parameters developed in the lab can be directly applied to commercial production lines without scale-up rework.
Except for the rarely used sugar coating, the CFC Lab can handle various applications in pharmaceutical R&D. For aesthetic coating, the system provides uniform color application with batch-to-batch consistency; protective coating can shield the API from oxygen, moisture, and light; functional coating supports enteric, sustained-release, and delayed-release formulations. The system comes standard with OEB4-ready containment, and BUCK® MC split valves enable high-containment tablet loading and unloading, reducing operator exposure risk. An optional wet-in-place cleaning feature provides an additional layer of contamination control.
The CFC Lab integrates with GEA's AirConnect platform, a modular platform supporting fluid bed drying, granulation, and tablet coating processes from 100 grams to 10 kg pilot scale. The CFC Lab uses a single control unit to complete the entire oral solid dosage (OSD) R&D workflow from granules to coated tablets. The integration consolidates automation and air handling functions for all processes into a single platform, reducing capital investment and operational expenditure, and simplifying operator training, validation, calibration, and maintenance activities.
GEA states that the CFC Lab features: faster optimization shortening development cycles; identical lab-to-production geometry eliminating re-validation costs; reduced coating material consumption cutting waste by over 90%; and built-in containment reducing the need for engineering controls or personal protective equipment.
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