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Fluidized Bed Bottom Spray Coating Machine – Advanced Coating Solution for Pharmaceutical Applications

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Fluidized Bed Bottom Spray Coating Machine
18
Mar

Introduction to Multi-Functional Fluidized Bed Systems

In modern industries such as pharmaceuticals, nutraceuticals, and chemicals, processing powder and granular materials requires high precision, consistency, and efficiency. The fluidized bed system is one of the most advanced solutions designed to meet these demands.

Today’s fluidized bed equipment is no longer limited to simple drying or granulation. It integrates multiple processing technologies, including:

  • Drying

  • Granulation

  • Coating

Among these, bottom spray coating technology stands out as the most accurate and efficient method, especially for coating pellets and fine particles.

 

learn Fluidized Bed Bottom Spray Coating Machine

Core Function: Bottom Spray Coating Technology

What is Bottom Spray Coating?

Bottom spray coating (fluidized bed bottom spray coating) is a process in which coating liquid is sprayed upward from the bottom of the chamber, allowing particles to be coated evenly while suspended in a fluidized state.

This technology is widely used in:

  • Pharmaceutical manufacturing

  • Nutraceutical production

  • Chemical processing

Key Applications

Bottom spray coating enables:

  • Moisture and oxidation protection

  • Controlled-release and sustained-release coatings

  • Taste masking for bitter substances

  • Improved product stability and appearance

👉 It is an essential process for producing high-quality pellets and coated particles.

Working Principle of Bottom Spray

The machine operates based on a combination of fluidization and upward spraying:

  1. Heated air enters from the bottom, creating a fluidized state

  2. Particles (pellets/granules) are lifted and circulate inside the chamber

  3. Materials move through a central Wurster column

  4. Coating liquid is sprayed upward from the bottom, aligned with airflow

  5. Particles pass through the spray zone and receive a coating layer

  6. The coated particles are dried immediately

  7. They fall back and repeat the cycle continuously

👉 Result:

  • Uniform coating layer

  • Smooth surface

  • Precise thickness control

Compared to other coating methods, bottom spray provides the highest level of accuracy and consistency.

Additional Functions of Fluidized Bed Equipment

Besides bottom spray coating, the fluidized bed system offers multiple processing capabilities.

1. Drying Function

  • Uses heated air to remove moisture

  • Suitable for powders and granules

  • Fast and uniform drying performance

2. Top Spray Granulation

  • Liquid is sprayed from the top downward

  • Combines mixing, granulation, and drying in one step

  • Reduces processing time and operational cost

3. Tangential Spray (Side Spray)

  • Uses a centrifugal disc for particle movement

  • Materials rotate in circular motion

  • Suitable for pelletizing and surface coating

👉 Quick comparison:

  • Top spray → Granulation

  • Side spray → Pelletizing / coating

  • Bottom spray → High-precision coating ⭐

Key Features of the Fluidized Bed Coating Machine

1. Multi-Functional Design

A single system can perform:

  • Drying

  • Granulation

  • Coating

👉 Reduces investment costs and saves space.

2. Flexible Configuration

  • Interchangeable modules:

    • Top spray

    • Side spray

    • Bottom spray

  • Adaptable to different production processes

3. Advanced Filtration System

  • Stainless steel filter cartridges

  • Reverse air cleaning system

👉 Prevents clogging and ensures stable operation.

4. Online Spray Gun Replacement

  • Spray nozzles can be replaced or cleaned during operation

  • No need to stop the machine

👉 Ensures continuous production.

5. Intelligent Control System

  • PLC-based automatic control

  • Real-time data monitoring and storage

  • Data export via USB

6. GMP Compliance

  • Designed for pharmaceutical standards

  • Ensures hygiene, safety, and traceability

Technical Specifications

Technical specifications and key parameters of the test model:

Model Name Mini-XYT XYT-I XYT-III XYT-V
Effective Volume (L) 2 5 12 25
Granulation Capacity (kg/batch) 0.1 ~ 0.6 0.2 ~ 2.0 0.2 ~ 4.0 0.2 ~ 8.0
Coating Capacity (kg/batch) 0.05 ~ 0.4 0.1 ~ 1.5 0.1 ~ 3.0 0.3 ~ 5.0
Fan Power (kw) 1.5 2.2 5.5 7.5
Heating Power (kw) 1.5 9 12 15
Power Supply 220V/50Hz Single-phase 380V/50Hz Three-phase 5-wire
Air Source Pressure (MPa) 0.3-0.6 0.3-0.6 0.3-0.6 0.3-0.6
Compressed Air Consumption (m³/min) 0.4 0.6 0.6 0.6
Equipment Dimensions (mm) 910×710×1540 1400×790×2045 1580×830×2065 1850×1100×2445
Machine Weight (kg) 150 550 750 950

Manufacturing specifications and key technical parameters:

Thiết bị / Model XYT-15 XYT-30 XYT-60 XYT-120 XYT-200 XYT-500
Thể tích hiệu dụng (L) 100 150 215 450 620 875
Năng suất tạo hạt (kg/mẻ) 5-15 10-30 30-60 50-120 100-200 200-500
Năng suất bao phim (kg/mẻ) 4-14 8-28 25-55 45-110 90-180 200-500
Công suất quạt gió (kw) 7.5 11 18.5 37 45 75
Công suất gia nhiệt (kw) 30 48 81 126 144 180
Tổng công suất (kw) 37.5 59 98.5 163 189 255
Nguồn điện 380V/50Hz 3 pha 5 dây
Áp suất khí (MPa) 0.6 0.6 0.6 0.6 0.6 0.6
Lưu lượng khí nén (m³/min) 0.6 0.9 1.2 1.8 3.0 4.0
Kích thước thiết bị (mm) 1000×1200×3000 1200×1300×3200 1710×1560×3960 1970×1700×5040 2300×2000×5620 2610×2250×8000
Trọng lượng máy (kg) 2200 2500 3000 4000 5000 6000
Ghi chú: Năng suất được tính toán dựa trên khối lượng riêng của nguyên liệu là 0.3g/cm³

Advantages of Bottom Spray Coating Technology

Compared to other coating methods, bottom spray offers significant benefits:

  • High coating uniformity

  • Minimal agglomeration

  • Precise thickness control

  • Reduced material loss

  • Improved production efficiency

👉 This is why bottom spray coating is widely adopted in modern pharmaceutical manufacturing.

Industrial Applications

Pharmaceutical Industry

  • Pellet coating

  • Capsule coating

  • Controlled-release drug production

Nutraceutical Industry

  • Coating of functional granules

  • Taste masking

  • Stability enhancement

Chemical Industry

  • Fertilizer coating

  • Micro-particle coating

Supply and Installation Services in Southeast Asia

We provide comprehensive supply, installation, and technical support services for fluidized bed equipment across Southeast Asia. With extensive experience in the region, our team ensures smooth project execution from equipment delivery to on-site commissioning and operator training.

Our services include:

  • Equipment supply and customization

  • On-site installation and commissioning

  • Technical training and operation guidance

  • After-sales support and maintenance

We currently support customers in the following countries:

  • Vietnam

  • Thailand

  • Indonesia

  • Malaysia

  • Philippines

  • Singapore

  • Cambodia

  • Laos

  • Myanmar

👉 With a strong regional presence, we are committed to delivering reliable solutions and long-term technical support to our partners throughout Southeast Asia.

Contact us for a quote and consultation on fluidized bed coating machines.

The fluidized bed system is an essential piece of equipment in modern manufacturing. Among its various capabilities, bottom spray coating technology plays a critical role in improving product quality and performance.

With advantages such as:

  • Uniform coating

  • Precise control

  • Multi-functional operation

This system is suitable for both laboratory research and large-scale industrial production.

Tin Nghi Dac Pharmaceutical Equipment Co., Ltd.

Tax Code: 3703422032
Office phone: (+84)28 66719989
Mobile: (+84)329 280 289
Email: info@xinyite.com.vn
Address: 49C D11 Street, Group 18, Quarter 4, An Phu Ward, Ho Chi Minh City, Vietnam.

👉 If you are looking for an efficient and reliable coating solution, the fluidized bed bottom spray coating machine is the ideal choice.

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