Coating is the final quality-defining step in solid dosage manufacturing. Whether you are applying film coating for swallowability and brand identity, enteric coating for site-specific drug release, or building pellet layers for controlled release — the coating process determines appearance uniformity, dissolution performance, stability, and patient compliance.
Canaan supplies GMP-compliant pharmaceutical coating equipment covering conventional film and sugar coating, interchangeable-pan coating for multi-product flexibility, automatic spray gun adjustment for precision coating, and centrifugal granulating & coating for pellet production — serving pharmaceutical, nutraceutical, chemical, and health product manufacturers worldwide.
Precision peristaltic pump and spray control maximise coating powder utilisation — reducing material cost per batch and minimising waste on every production run.
All BGX series coaters supply 100,000-grade purified hot air under negative pressure — maintaining cleanroom standards inside the coating pan throughout the process.
Cantilever roller structure, no front support, no splicing gaps, and optimised spray ball layout eliminate dead angles — making CIP validation straightforward and reliable.
Full PLC automation, airbag-sealed operating doors with leak alarm, high-quality 316L stainless steel contact surfaces — meeting FDA and cGMP requirements by design.
The right coating machine depends on your tablet or pellet type, your coating application (film, sugar, enteric, or pellet coating), and your production flexibility requirements. Use this guide to identify the right starting point.
| Coating Type / Need | Best For | Canaan Equipment |
|---|---|---|
| Film coating + multi-product flexibility | Multiple tablet sizes or batch sizes; R&D + production on one line; minimising changeover time | BGX Series — Interchangeable Pan |
| Film / sugar coating + precision spray control | High-volume commercial production; consistent coating thickness; automated spray angle optimisation | BGX Series — Auto Spray Gun |
| Pellet production + coating | Starting from powder to make pellets; controlled-release multi-layer pellet coating; spheronizing | LB Centrifugal Granulating & Coating Machine |
All Canaan coating equipment is built with high-quality stainless steel, all-arc-transition interiors with no dead corners, and PLC automation — complying with FDA and cGMP requirements. IQ/OQ/PQ validation documentation available on request.
Coating failures are expensive — a batch with uneven film thickness, coating defects, or failed dissolution testing has to be reworked or rejected. Most coating problems trace back to equipment design rather than formulation.
Manual spray gun positioning drifts during long coating runs, causing thin spots and colour variation — leading to failed appearance inspection or dissolution failure.
Solution: BGX Auto Spray Gun with online laser ranging continuously adjusts spray angle in real time, maintaining optimal spray distance regardless of tablet bed depth changes.
Coating powder is expensive. Poor spray efficiency, improper airflow, or dead angles in the pan drive material loss — directly increasing cost per batch.
Solution: BGX series achieves up to 95% coating material utilisation through precision peristaltic pump control, negative-pressure pan operation, and optimised spray coverage.
Traditional coating pan designs with front support structures, spliced frames, and poor spray ball positioning create cleaning dead angles that fail CIP validation — a critical GMP non-conformance.
Solution: BGX cantilever roller structure eliminates the front support, and the seamless frame with optimised spray ball layout removes all dead angles — making CIP validation straightforward.
Running a fixed-volume coater on small batches wastes energy, increases coating time, and risks tablet damage from excessive tumbling — but purchasing separate machines for each size is expensive.
Solution: BGX Interchangeable Pan allows the same machine to run BGX20 through BGX350 drum volumes — covering R&D through commercial production on a single platform.
The BGX Interchangeable Pan version is designed for multi-product flexibility — the coating drum can be swapped between different volumes (20 L to 350 L) on the same machine, making it ideal for manufacturers running diverse products or batch sizes. The BGX Auto Spray Gun version adds automatic spray angle adjustment and online laser ranging for higher precision and consistency in commercial-scale coating operations, and is available up to 600 L. Both versions share the same core platform: negative-pressure pan, 100,000-grade purified hot air, CIP-compliant design, and FDA/GMP compliance.
Yes. Both BGX variants support film coating and sugar coating in the same machine. Film coating uses the automated PLC-controlled peristaltic pump and spray system with the pan under negative pressure and purified hot air. Sugar coating is operated manually (or with a diaphragm pump) with the syrup sprayed onto tablets rotating clockwise in the pan, with hot air applied to remove surface moisture and achieve the polishing effect. The operator selects the process mode; no hardware changes are required between coating types.
The LB centrifugal granulating and coating machine is a pellet technology platform — it starts from raw powder and produces spherical pellets, whereas a coating pan is used to apply a coating onto already-formed tablets or pellets. The LB machine uses rotary centrifugal force, friction, and annular gas buoyancy to agglomerate powder with binder solution into spherical pellets (0.25–2.5 mm), then shapes and coats them in the same vessel. It is used for controlled-release multi-layer pellet systems, capsule-fill pellets, and any application where pellets are produced from scratch rather than coated onto an existing substrate.
The BGX series operating doors are sealed with inflatable airbags that conform precisely to the door frame geometry when inflated — creating a hermetic seal that prevents coating mist, solvent vapour, or cross-contamination from escaping the process zone. The system automatically detects seal leaks and inflates to restore the seal, and triggers an alarm if the leak cannot be corrected. This design meets GMP requirements for contained coating operations and eliminates the risk of operator exposure to coating aerosols or potent drug dust during the coating cycle.
Select the drum size where your batch volume (in litres) falls within approximately 60–80% of the maximum drum capacity — operating at less than 50% capacity can lead to poor tablet movement and uneven coating, while overfilling risks tablet damage and coating defects. For example, a 120 L batch is well suited to the BGX150 (max 150 L). For multi-product lines with varying batch sizes, the BGX Interchangeable Pan allows switching between drum sizes on the same machine. Contact our process engineers with your batch weight, tablet bulk density, and target coating weight gain for a specific recommendation.
Yes. The BGX series supports enteric coating applications using standard enteric polymers (HPMC-AS, Eudragit, CAP, etc.) applied by the film coating process. The precision spray control, negative-pressure pan operation, and accurate temperature and airflow management are essential for enteric coating — where even small variations in coating weight or uniformity can affect the pH-dependent dissolution profile. Contact our application engineers for enteric coating process recommendations and spray parameter guidance for your specific polymer system.
Tell us your tablet type, batch size, coating application (film / sugar / enteric / pellet), and production scale — our coating process engineers will recommend the right model and configuration within 24 hours.
✓ Response within 24 hours ✓ Dedicated coating process engineer ✓ NDA available on request
Coating is the final step before packaging. Canaan supplies the complete upstream OSD equipment — all built to the same cGMP standard and available as an integrated turnkey line.
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