Tablet Coating Machine Case Study: 3X Efficiency & 99.5% Yield

In pharmaceutical solid dosage manufacturing, the tablet coating process is often the most critical bottleneck. Whether applying a traditional sugar coating, a protective film, or an enteric release layer, manufacturers demand flawless uniformity, fast drying times, and strict cGMP compliance.

Recently, a leading cardiovascular pharmaceutical company (producing large volumes of antihypertensive tablets) partnered with JianPai Technology to replace their outdated conventional coating pans. By upgrading to our flagship High-Efficiency Tablet Coating Machine, they achieved unprecedented results: reducing batch time from 12 hours to just 2.5 hours, and boosting yield to 99.5%.

Here is a deep dive into how JianPai’s technology overcame their biggest production hurdles.

The Customer’s Challenge: Bottlenecks in the Traditional Coating Process

Before the upgrade, the client utilized conventional, open-style coating pans for their complex three-step sugar coating process (Subcoating, Color Coating, and Polishing).

The old process suffered from critical pain points:

• Subcoating (65-70% weight gain): Required multiple manual powder sprinklings and syrup spraying. Drying relied heavily on the operator’s experience, making the process highly labor-intensive.

• Color Coating (10% weight gain): Traditional pans often resulted in color variations and spotting across different batches.

• Polishing (0.05% weight gain): Manual wax addition made it difficult to control the time and consistency of the glossy finish.

The Baseline Production Data (Old Process):

• Batch Size: ~50kg (approx. 500,000 core tablets)

• Total Processing Time: 10 to 12 hours per batch

• Yield Rate: Only 92% (Common defects included edge wear, color spotting, and uneven wax layers)

• Labor Requirement: 2 dedicated operators per machine

The JianPai Solution: High-Efficiency Automated Tablet Coating Machine

To eliminate these inefficiencies, the client installed the JianPai JGB-Series High-Efficiency Tablet Coating Machine. Designed for global mid-to-high-end markets, this closed-loop system features a fully perforated drum, precision atomization spray guns, and an advanced thermodynamic hot air exhaust system.

By transitioning to our automated system, the client achieved continuous, one-button execution for all three coating phases.

How JianPai Engineering Solved the Process Challenges

• Handling High-Solid Suspensions (Subcoating)

  • The Tech: Equipped with large-caliber, anti-clogging spray guns and variable-frequency peristaltic pumps.

  • The Result: Effortlessly handles heavy suspensions with up to 70% solid content (like talc/sucrose mixtures). The drum speed and auto-reverse functions are precisely controlled by the PLC, eliminating the need for machine stoppages and manual tablet flipping.

• Flawless Color Uniformity (Color Coating)

  • The Tech: Independent atomization pressure controls across multiple spray nozzle arrays.

  • The Result: Ensures highly uniform droplet distribution, completely eradicating color spots and ensuring aesthetic perfection batch after batch.

• Automated Polishing

  • The Tech: A dedicated polishing program utilizing low-speed drum rotation, isolated hot air shut-off, and an automatic wax powder spraying device.

  • The Result: Delivers a consistent, brilliant surface gloss without manual intervention.

• Data Integrity & cGMP Compliance

  • The Tech: The built-in PLC Recipe Management automatically calculates the total liquid spray volume based on the core tablet weight.

  • The Result: Eliminates human calculation errors, ensuring full compliance with FDA CFR 21 Part 11 Data Integrity guidelines. Additionally, the integrated Clean-In-Place (CIP) system allows for rapid, cross-contamination-free batch changeovers.

The ROI: 300% Efficiency Boost & 99.5% Yield

The implementation of the JianPai High-Efficiency Tablet Coater delivered immediate, transformative data for the client’s antihypertensive production line:

Beyond Sugar: The Ultimate Solution for Film & Enteric Coating

While this specific case study highlights our machine’s exceptional capability to handle difficult, high-solid sugar coatings, this same robust engineering makes standard Film Coating and Enteric Coating effortless.

If a coating machine can perfectly process heavy, 70%-solid suspensions without clogging, it guarantees unmatched precision and reliability when spraying advanced polymer film coatings required by the European and North American markets.

JianPai’s Tablet Coating Machines are expertly designed for:

• Aqueous and organic film coating

• Enteric-release and sustained-release coating

• Handling moisture-sensitive and friable core tablets

Upgrade Your Solid Dosage Line with a Top 10 Chinese Manufacturer

With over two decades of innovation since 1997, Zhejiang JianPai Technology Co., Ltd is globally recognized as a “National High-Tech Enterprise” and a “Top 10 Pharmaceutical Equipment Manufacturer in China.”

Our flagship Tablet Coating Machines, alongside our High Shear Mixers and Fluid Bed Dryers, provide pharmaceutical companies with world-class, turnkey solid dosage manufacturing solutions.

Ready to maximize your tablet coating efficiency and product yield?
Contact JianPai Technology today to request a free process consultation, equipment sizing guide, or to schedule a Factory Acceptance Test (FAT).