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How Blister Sealing Machines Work And Their Main Components

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Have you ever wondered how products are securely packaged? Blister sealing machines play a vital role in ensuring safety and freshness.

These machines are essential in industries like pharmaceuticals, food, and electronics.

In this article, we’ll explore how blister sealing machines work and their main components.

 

Core Working Principles of Blister Sealing Machines

Understanding the Sealing Mechanism

When it comes to blister sealing machines, two dominant sealing mechanisms stand out: rotary sealing and platen sealing. Each method has its unique features and applications.

What are the Two Dominant Sealing Mechanisms?

1.  Rotary Sealing

a.  This method uses a rotating mechanism to seal blister packs.

b.  It operates at high speeds, often reaching up to 180 cycles per minute.

c.  Advantages of Rotary Sealing:Efficiency: Ideal for high-volume production.

i.  Precision: Offers accurate sealing with less heat exposure.

ii.  Space-Saving: Compact design fits in smaller production areas.

2.  Platen Sealing

a.  Platen sealing involves two heated plates pressing together to seal the blister.

b.  This method is generally slower but suitable for thicker materials.

c.  Advantages of Platen Sealing:Versatility: Can handle complex shapes and sizes.

i.  Material Compatibility: Works well with various materials, including thicker films.

ii.  Heat Control: Allows for better management of heat application.

Comparison Table

Feature

Rotary Sealing

Platen Sealing

Speed

Up to 180 cycles/min

Slower, varies by model

Material Thickness

Best for thin films

Handles thicker materials

Shape Compatibility

Limited to standard shapes

Excellent for complex shapes

Heat Application

Less exposure

Higher exposure possible

Both sealing methods have their place in the industry. Depending on the production needs, one might be more suitable than the other.

In summary, understanding these mechanisms helps manufacturers choose the right blister sealing machine for their specific applications.

 

How Does Rotary Sealing Work?

Rotary sealing is a highly efficient method used in blister sealing machines. It involves a rotating mechanism that seals blister packs quickly and effectively. Let’s dive into how this process works and its advantages.

Description of the Rotary Sealing Process

In rotary sealing, blister packs are fed into the machine where heated rollers apply pressure to the packaging material. Here’s a step-by-step breakdown:

1.  Feeding: Blister cards and lidding materials are loaded into the machine.

2.  Heating: The heated rollers warm the lidding material to the required temperature.

3.  Sealing: As the rollers rotate, they press the lidding onto the blister packs, creating a secure seal.

4.  Cutting: After sealing, the packs are cut to the desired size for packaging.

Advantages of Rotary Sealing

● Speed:

○ This method can achieve speeds of up to 180 cycles per minute.

○ Ideal for high-volume production environments.

● Precision:

○ Offers accurate sealing, ensuring that each blister is tightly closed.

○ Reduced heat exposure minimizes the risk of damaging sensitive products.

● Space Efficiency:

○ The compact design of rotary machines saves valuable floor space.

○ Perfect for facilities with limited room for equipment.

Limitations of Rotary Sealing

While rotary sealing has many benefits, it does have some drawbacks:

● Less Suitable for Irregular Shapes:This method works best with standard blister shapes.

○ It struggles with irregular shapes, such as ampoules, which may require more specialized equipment.

Advantage/Limitations

Description

Speed

Up to 180 cycles/min

Precision

Accurate sealing, less heat exposure

Space Efficiency

Compact design saves floor space

Irregular Shapes

Not ideal for non-standard shapes

Rotary sealing is a powerhouse in the blister sealing industry. Its speed, precision, and efficiency make it a popular choice for many manufacturers.

 

How Does Platen Sealing Work?

Platen sealing is another crucial method in the operation of blister sealing machines. It employs a different process compared to rotary sealing, making it suitable for various applications. Let’s explore how platen sealing works and its advantages.

Description of the Platen Sealing Process

In platen sealing, two heated plates press together to create a seal. Here’s how the process unfolds:

1.  Setup: Blister cards and lidding materials are placed between the heated platens.

2.  Heating: The plates are heated to the required temperature, activating the sealing layer.

3.  Pressing: The platens close, applying uniform pressure across the entire surface.

4.  Cooling: After a brief cooling period, the platens open, and the sealed blisters are ready for further processing.

Advantages of Platen Sealing

● Better for Complex Shapes:

○ Platen sealing excels at handling intricate designs, such as those found in medical devices.

○ It accommodates various shapes and sizes effectively.

● Suitable for Thicker Materials:

○ This method works well with thicker films, making it versatile for different packaging needs.

○ It ensures a secure seal even under challenging conditions.

Limitations of Platen Sealing

Despite its strengths, platen sealing has some limitations:

● Slower Operation:

○ The process is generally slower than rotary sealing, which may affect production rates.

○ It’s not ideal for high-volume environments.

● Higher Energy Consumption:

○ The heating of large platens requires more energy, increasing operational costs.

○ This can be a concern for manufacturers focused on efficiency.

● Increased Risk of Blister Deformation:

○ Prolonged heat exposure can lead to blister deformation.

○ This is particularly problematic for heat-sensitive products.

Advantages/Limitations

Description

Complex Shapes

Excellent for intricate designs

Thicker Materials

Handles thicker films effectively

Slower Operation

Generally slower than rotary sealing

Energy Consumption

Higher energy use due to heating large plates

Blister Deformation

Risk of deformation from prolonged heat exposure

Platen sealing is a powerful method in the blister sealing landscape. Its ability to handle complex shapes and thicker materials makes it a valuable choice for many applications.

 Blister Sealing Machine

Key Components of a Blister Sealing Machine

Understanding the key components of a blister sealing machine is crucial for grasping how these machines operate efficiently. Let's explore the essential parts and their functions.

Sealing Station

The sealing station is the heart of any blister sealing machine. Here’s how it works:

● Heating Roller/Mold:

○ In rotary models, grooved stainless steel rollers maintain fixed temperatures, typically around 220°C.

○ Platen models use dual heated plates to achieve the necessary sealing temperature.

● Pressure System:

○ The pressure system plays a vital role in ensuring effective sealing.

○ Pneumatic or hydraulic cylinders operate at pressures between 0.4 and 0.8 MPa, delivering consistent force for proper foil adhesion.

● Cooling Mechanism:

○ Many machines include water-cooled molds (optional) to prevent overheating during continuous operations.

○ This cooling feature enhances the longevity and efficiency of the machine.


Material Handling System

The material handling system is essential for maintaining smooth operations:

● Dual-Reel Feeding:

○ High-end machines often feature twin PVC/PET rolls for seamless operation.

○ This setup allows for continuous production without stops, improving efficiency.

● Fast-Lock Foil Loaders:

○ These loaders enable quick lidding material replacement in under 10 seconds.

○ This capability minimizes downtime during production runs.

● Waste Trimming:

○ Integrated cutters can significantly reduce material waste, achieving reductions of 15–20% compared to manual systems.

○ This feature not only saves costs but also promotes sustainability.


Control and Automation Features

Advanced control and automation features enhance the machine's usability:

● PLC and Touchscreen Interfaces:

○ Programmable Logic Controllers (PLC) and intuitive touchscreen interfaces allow operators to adjust sealing time, temperature, and format settings easily.

○ This flexibility is crucial for adapting to different production needs.

● Servo Motors:

○ Servo motors play a critical role in material feeding.

○ They provide precise traction control, which is essential for high-speed models that can reach 20m/min line speeds.

● Vision Inspection:

○ Cameras integrated into the system enhance quality control by detecting misalignments or defects.

○ This technology achieves over 99% rejection accuracy, ensuring only quality products are packaged.


Forming and Feeding Mechanisms

The forming and feeding mechanisms are vital for efficient production:

● Universal Feeders:

○ These track-based systems handle various shapes, including tablets, capsules, and irregular shapes, achieving high loading efficiency of 98%+.

○ Their versatility is a significant advantage in diverse production environments.

● Splicer Integration:

○ Splicer integration allows for quick material changes without downtime.

○ This feature can boost uptime by 30% in mid-range machines, making production more efficient.

Component

Function

Sealing Station

Core of sealing process

Heating Roller/Mold

Applies heat for sealing

Pressure System

Ensures proper foil adhesion

Cooling Mechanism

Prevents overheating

Material Handling System

Manages material flow and reduces downtime

Control Features

Allows for easy adjustments

Forming Mechanisms

Handles various shapes efficiently

These components work together seamlessly to ensure that a blister sealing machine operates effectively and efficiently, meeting the demands of modern packaging needs.

 Blister Sealing Machine

Competitive Landscape and Market Trends

High-Speed Segment Overview

High-speed blister sealing machines are specifically engineered to meet the increasing demands of modern packaging, particularly in industries such as pharmaceuticals and food. Let’s explore some examples and the key features that make these machines highly competitive.

Examples of High-Speed Blister Sealing Machines

One prominent example is the DPH-260. This machine showcases the capabilities of high-speed blister sealing technology, efficiently handling large volumes while maintaining exceptional quality standards.

● Specifications:

○ Output Speed: Up to 260 blisters per minute.

○ Film Width: Accommodates various film sizes for enhanced versatility.

Key Features That Make These Machines Competitive

High-speed blister sealing machines come equipped with several standout features:

● Dual-Reel PVC:

○ The dual-reel system facilitates continuous operation.

○ This design minimizes downtime, allowing operators to switch rolls without interrupting the production flow.

● Water-Cooled Seals:

○ Water-cooled seals prevent overheating during prolonged runs.

○ This feature enhances the machine's efficiency and extends its overall lifespan.

● GMP Compliance:

○ These machines emphasize Good Manufacturing Practices (GMP).

○ Stainless steel interiors ensure cleanliness and durability.

○ Sealed work zones help prevent contamination, which is crucial in sensitive environments.

Feature

Description

Dual-Reel PVC

Enables uninterrupted production

Water-Cooled Seals

Prevents overheating, enhancing efficiency

GMP Compliance

Ensures high standards of cleanliness and safety

High-speed blister sealing machines like the DPH-260 are equipped with advanced features that enhance productivity and compliance, making them essential assets in high-demand production settings.

 

Desktop Models for SMEs

Desktop blister sealing machines are ideal for small and medium enterprises (SMEs) looking to streamline their packaging processes. These compact machines offer a blend of efficiency and convenience, making them a popular choice in various industries.

Overview of Compact Machines

One notable example is the DPP-80. This model is designed specifically for SMEs, providing a robust solution for blister packaging needs. Its compact size does not compromise performance, allowing businesses to achieve high-quality seals without requiring extensive floor space.

● Specifications:

○ Footprint: Small enough to fit in limited work areas.

○ Output: Handles a variety of products efficiently.

Key Selling Points for Small and Medium Enterprises

When considering a desktop blister sealing machine, SMEs benefit from several key features:

● Cycle Speeds:

○ The DPP-80 operates at cycle speeds ranging from 10 to 40 cycles per minute.

○ This flexibility allows businesses to adjust production rates based on demand.

● Portability:

○ Weighing approximately 450 kg, the machine is easy to move.

○ This portability makes it suitable for dynamic work environments where space may be limited.

Feature

Description

Cycle Speeds

10–40 cycles/min for varying production needs

Portability

Lightweight design for easy relocation

Additional Benefits

● User-Friendly Interface:

○ The DPP-80 features an intuitive control panel, making it accessible for operators of all skill levels.

● Versatile Applications:

○ Ideal for pharmaceuticals, cosmetics, and food packaging, ensuring diverse usability.

In summary, desktop models like the DPP-80 provide SMEs with a practical solution for their blister sealing needs, combining efficiency, portability, and user-friendly design.

 

Innovations in Blister Sealing Technology

The blister sealing industry is rapidly evolving, driven by advancements in technology. These innovations enhance efficiency, improve product quality, and streamline operations. Let’s dive into some of the most exciting developments in blister sealing machines.

Emerging Features: Perforation-Embossing Separation

One of the standout innovations is perforation-embossing separation. This feature allows for precise control over how blisters are sealed and opened.

● Benefits:

○ Improved User Experience: Consumers can easily access products without damaging the packaging.

○ Reduced Waste: Enhanced sealing techniques minimize the chances of product spoilage.

The integration of this feature not only boosts functionality but also meets consumer expectations for convenience.

The Role of AI in Defect Detection and Quality Assurance

Artificial Intelligence (AI) is transforming how blister sealing machines operate. By incorporating AI, manufacturers can significantly enhance their quality control processes.

● Key Advantages:

○ Defect Detection: AI algorithms analyze each blister for imperfections in real-time. This ensures only high-quality products reach consumers.

○ Quality Assurance: Continuous monitoring reduces the likelihood of errors, maintaining consistent production standards.

Feature

Impact

AI Defect Detection

Identifies issues quickly, enhancing quality

Operational Efficiency

Decreases manual oversight, saving time

Reducing Manual Oversight

By automating defect detection, companies reduce the need for extensive manual checks. This shift leads to:

● Increased Productivity: Operators can focus on other critical tasks, boosting overall efficiency.

● Cost Savings: Less labor is required for quality checks, reducing operational costs.

With these innovations, blister sealing machines are becoming smarter, faster, and more reliable. They not only enhance production capabilities but also ensure that products meet the highest quality standards.

 

Conclusion

Blister sealing machines play a crucial role in packaging. They enhance product protection and improve shelf life. Key features include advanced technologies like perforation-embossing separation and AI integration for quality control.

Understanding these machines is vital for industry professionals. It helps optimize production processes and ensures high-quality packaging. Embracing innovations in blister sealing technology can lead to significant operational benefits.

 

FAQ

Q: What industries commonly use blister sealing machines?

A: Blister sealing machines are widely used in pharmaceuticals, food packaging, cosmetics, and electronics.

Q: How do I choose the right blister sealing machine for my needs?

A: Consider production volume, product type, required features, and budget when selecting a machine.

Q: What are the maintenance requirements for blister sealing machines?

A: Regular cleaning, lubrication, and inspection of components are essential for optimal performance.

Q: How do blister sealing machines contribute to product safety and compliance?

A: They ensure secure packaging, preventing contamination and maintaining compliance with industry regulations.

Q: What are the typical cycle speeds for different types of blister sealing machines?

A: Cycle speeds generally range from 10 to 260 cycles per minute, depending on the machine model.

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