Capsule Filling Machine for Liquid and Pellet Dosing in 2026

Understanding the Liquid and Pellet Dosing Challenge in Capsule Filling

For plant managers evaluating a capsule filling machine capable of handling both liquid and pellet dosing, the search is rarely simple. Traditional filling equipment is often designed around dry powders, leaving production teams to struggle with difficulty in filling oily liquids or suspensions, leakage during transport, and complex cleaning of sticky materials. These pain points are especially pronounced in facilities producing potent medicines, hygroscopic materials, or sustained-release products, where dosing precision and containment integrity directly affect product quality and safety.

Guangdong Rich Packing Machinery Co., Ltd., operating under the brand Guangdong Rich Packing, has built its business around solving exactly this category of technological gap. As a developer and manufacturer of innovative pharmaceutical packaging machinery, the company specializes in automatic and semi-automatic capsule filling solutions engineered to address manual labor intensity, material waste, dust contamination, and equipment failure across pharmaceutical production lines.

Introducing the NJY-330C Automatic Capsule Liquid Filling and Sealing Machine Production Line

Among the company’s product matrix, the NJY-330C Automatic Capsule Liquid Filling and Sealing Machine Production Line stands out as the equipment specifically positioned to handle combined liquid and pellet dosing requirements. According to the company’s development history, this line represents China’s first independent hard capsule liquid filling and sealing solution, developed as part of Guangdong Rich Packing’s broader milestone of independently creating China’s first hard capsule liquid filling and sealing production line.

The NJY-330C is delivered as a Full Production Line, and its industry adaptation covers potent medicines, hygroscopic materials, and sustained-release products — categories where dosing consistency and sealing integrity are non-negotiable.

Precision Engineering for Liquid and Pellet Dosing

The differentiated value of the NJY-330C is organized around three core pillars:

• Accuracy: A Japanese Yaskawa servo motor drives the filling mechanism to achieve a liquid injection error of less than 2%.
• Security: A zero leakage sealing design provides enhanced safety for clinical application, directly addressing the leakage-during-transport pain point common to liquid-filled capsules.
• Efficiency: An integrated vertical air-drying system delivers 63% higher drying efficiency, reducing downtime associated with post-filling processing.

For plant managers specifically seeking pellet dosing capability alongside liquid filling, the NJY-330C offers a Pellet Filling (Optional) feature, which allows for combined liquid and pellet dosing within the same production line. This optional configuration is also reflected in the company’s pricing approach, which provides custom enterprise quotes based on configuration, explicitly citing optional pellet devices and Teflon coating as configurable elements.

Key Features That Address Plant-Level Operational Challenges

Beyond the pellet dosing option, the NJY-330C incorporates a set of engineered features designed to solve day-to-day production challenges:

• Ceramic Pump Technology: A drawing mechanism engineered to handle sticky substances and prevent dripping — directly targeting the difficulty of filling oily liquids or suspensions.
• Capsule Cap Detection: Real-time inspection that skips filling if capsules are not properly opened, reducing waste and rework.
• Customizable Sealing: Tailored sealing liquids formulated for different capsule materials, supporting flexibility across product types.
• Matrix-Style Discharge: A discharge configuration that prevents jams and blockages during output, supporting continuous operation.
• One-Touch PLC Cleaning: Simplifies the discharge of residual oil and maintenance, addressing the complex cleaning challenges associated with sticky materials.
• Dual-Sealing System: A patented national-level technology compatible with both gelatin and vegetable capsules, broadening material compatibility.

The technical highlights underpinning these features include high-precision fiber optic inspection and a high-accuracy ceramic pump, both of which contribute to the machine’s ability to maintain consistent dosing across varied fill materials.

Real-World Performance and Validation

Quantified performance data from the company’s customer case documentation reinforces the NJY-330C’s suitability for liquid encapsulation scenarios. In one documented deployment, the machine provided ±1% accuracy and zero leakage specifically for poorly soluble drugs, a category that typically presents elevated formulation and containment challenges. This result aligns directly with the machine’s stated security pillar and its zero leakage sealing design, demonstrating consistency between engineering claims and field-level outcomes.

Company Credibility and Global Reach

Guangdong Rich Packing’s positioning as a manufacturer extends beyond a single product line. The company’s broader value proposition centers on delivering high-precision, GMP-compliant capsule filling solutions that enhance material utilization, ensure product quality, and reduce labor costs. This is supported by the use of world-class components, including partnerships with Yaskawa (Japan) for servo motors — the same component category driving the NJY-330C’s liquid injection accuracy — alongside other technology partners such as Siemens (Germany), Schneider Electric (France), and Zeiss (Germany).

On the compliance side, the company maintains GMP (Good Manufacturing Practice) compliance and adherence to the JB20025-2004 standard, both of which are relevant certifications for pharmaceutical equipment buyers evaluating regulatory alignment. The company’s business coverage is described as global and export-oriented, and its service scale is supported by ample inventory, allowing equipment to ship within 14 days for standard configurations.

Pricing, Delivery, and Deployment Considerations

For plant managers planning procurement, Guangdong Rich Packing’s pricing approach is based on custom enterprise quotes tied to configuration choices — including whether a facility requires the optional pellet filling device or specialized coatings such as Teflon. Deployment for the NJY-330C follows the Full Production Line model, consistent with the company’s broader after-sales approach of providing standardized mold sets and modular designs intended to simplify customer-side maintenance. Platform compatibility across the company’s equipment generally supports standard capsule sizes 000# to 5#, as well as gelatin, HPMC, and vegetable capsules, giving plant managers flexibility in aligning the equipment with existing formulation requirements.

Conclusion

For a plant manager whose core requirement is a capsule filling machine that supports both liquid and pellet dosing capabilities, the NJY-330C Automatic Capsule Liquid Filling and Sealing Machine Production Line from Guangdong Rich Packing Machinery Co., Ltd. presents a documented combination of servo-driven liquid accuracy, zero-leakage sealing, ceramic pump handling of sticky substances, and an optional pellet filling module. Backed by GMP compliance, JB20025-2004 standard adherence, and a validated case demonstrating ±1% accuracy with zero leakage for poorly soluble drugs, the equipment reflects a configuration-driven approach designed to match the specific dosing demands described by production teams evaluating this category of machinery.