Yangzhou Meida Filling Machinery Co., Ltd. is one of the leading manufacturers and suppliers of pressure filling of aerosols in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to buy advanced pressure filling of aerosols at competitive price from our factory.
Aerosol pressure filling refers to the process of introducing products (liquids, creams, gases) into pressurized containers, typically using a propellant to create the necessary pressure for dispensing.
There are two types of aerosol pressure filling methods, each with distinct characteristics depending on the type of product and propellant being used. Below are the main types
Bag-on-Valve (BOV) Filling
Process: This method separates the product from the propellant. The product is filled into a bag inside the aerosol can, and the propellant is added around the outside of the bag.
Product/Propellant Flow: The propellant is usually air or nitrogen, and it only serves to pressurize the product. The product is expelled without mixing with the propellant.
Usage: Common in cosmetics, pharmaceuticals, food (like whipped cream), and medical sprays (such as saline nasal sprays).
Advantages: Ensures complete product evacuation.
The product doesn't come into contact with the propellant, ensuring a clean and pure spray.
Allows use of eco-friendly propellants.
Disadvantages: The cost of aerosol filling equipment and materials is often higher.
Under The Cup (UTC) Filling
Process: Propellant is introduced under vacuum conditions into the can. This method pulls a vacuum in the can first, and then fills it with product and propellant.
Product/Propellant Flow: Product and propellant are introduced after the can is evacuated, which helps ensure no air is trapped inside the can.
Usage: Preferred for more sensitive formulations, where oxygen or air exposure can degrade the product.
Advantages: Minimizes product contamination by air.
Useful for products that require precise filling accuracy.
Disadvantages: More complex and expensive to implement.
BOV filling VS UTC filling
The Under-Cap Filling Machine and the Bag-on-Valve (BOV) Filling Machine are two advanced aerosol filling technologies that serve different purposes and product types. Below is a detailed comparison between the two:
Filling Method
Under-Cap Filling Machine:
In under-cap filling, the product is filled under the valve and immediately crimped in a vacuum environment.
Suitable for gases, such as refrigerants (R134a, R12, R22), and other technical aerosols that need precise handling under pressure.
The filling process combines vacuuming, dosing, and crimping in a controlled sequence.
Bag-on-Valve (BOV) Filling Machine:
The product is filled inside a bag placed within the aerosol can, separated from the propellant gas, which is filled in the space outside the bag.
It is ideal for products that need to stay separate from the propellant, such as cosmetics, pharmaceuticals, food-grade aerosols, and personal care products (e.g., nasal sprays, self-defense pepper sprays).
The product is dispensed by the pressure from the propellant squeezing the bag, without the product ever coming into contact with the gas.
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Applications
Under-Cap Filling Machine:
Primarily used for technical aerosols and gases that need to be filled directly into the container, such as refrigerants, air conditioners, and spray paints.
Suitable for products where the propellant and product are mixed.
Common in industrial and automotive applications (e.g., refrigerants like R134a).
BOV Filling Machine:
Ideal for personal care, pharmaceuticals, and food aerosols where the product needs to remain separate from the propellant.
Suitable for applications requiring continuous spray, sterility, or products sensitive to contamination (e.g., sunscreen, medical sprays).
Used in consumer industries for high-end and health-conscious products.
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Propellant/Product Interaction
Under-Cap Filling Machine:
The propellant and product can mix directly within the can.
This is essential for gases and technical aerosols where propellant mixing is required.
BOV Filling Machine:
The product and propellant are kept completely separate.
The propellant never comes into contact with the product, preserving product purity, sterility, and quality.
Allows for non-flammable propellants such as compressed air or nitrogen.
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Filling Process Control
Under-Cap Filling Machine:
Filling occurs under the cap, with vacuum-based precision.
Ensures tight sealing and purity, especially when filling sensitive gases or flammable products.
BOV Filling Machine:
Fills the product into a flexible bag within the can, while the propellant is filled around the bag.
Ideal for achieving constant pressure and high product output consistency.
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Environmental Impact
Under-Cap Filling Machine:
Often uses traditional propellants, which may include hydrocarbons or CFCs in certain applications.
Some applications might require strict handling due to environmental regulations.
BOV Filling Machine:
The separation of product and propellant allows the use of eco-friendly propellants such as air or nitrogen, making it a more sustainable option for certain products.
The use of non-flammable propellants also adds safety advantages.
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Advantages
Under-Cap Filling Machine:
Offers a high degree of precision for filling volatile or sensitive gases.
Suitable for applications that require a mix of product and propellant.
High-performance option for refrigerants and industrial aerosols.
BOV Filling Machine:
Ensures product purity by keeping the product and propellant separate.
Suitable for health-conscious products that need to be free of propellant contamination.
Offers continuous spray without losing pressure.
Eco-friendly due to the ability to use air or nitrogen as propellants.
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Disadvantages
Under-Cap Filling Machine:
May have limitations in applications where product purity is essential since the product and propellant mix.
The propellants used may have environmental concerns, particularly for certain gases.
BOV Filling Machine:
More complex in design and higher initial costs due to the need for separate product and propellant systems.
Suitable for niche markets like pharmaceuticals and high-end personal care, but less ideal for industrial aerosols.
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Why Meida?
Yangzhou Meida Filling Machinery produces both Bag-on-Valve (BOV) filling machines and Under-the-Cap (UTC) filling machines, each offering distinct advantages tailored to different applications.
Here are the key advantages of both types of filling machines:
Advantages of BOV (Bag-on-Valve) Filling Machines:
1.Separation of Product and Propellant:
BOV technology ensures that the product and the propellant are completely separated, maintaining product purity and preventing contamination. This is ideal for applications such as cosmetics, pharmaceuticals, food products, and personal care items.
2.Consistent Product Delivery:
BOV filling machines provide a continuous and even spray throughout the product's usage. The pressure inside the can remains constant until the product is completely used, ensuring no sudden drops in performance.
3.Environmental Benefits:
BOV systems can use eco-friendly propellants like compressed air or nitrogen, reducing the environmental impact compared to traditional aerosol propellants like hydrocarbons or CFCs.
The separation of propellant and product allows for safer use of non-flammable propellants.
4.Versatile Applications:
BOV technology is versatile and can handle a wide range of products, from self-defense sprays like pepper spray to medical-grade products (e.g., nasal sprays) and cosmetic aerosols (e.g., hair sprays, sunblock).
Ideal for sterile and hygienic applications, ensuring that the product does not come into contact with air, maintaining its integrity.
5.Reduced Waste:
BOV technology ensures that nearly all the product in the can is used, minimizing waste. Consumers get more value as less product is left unused.
6.Safe for Sensitive Products:
BOV systems are particularly suitable for sensitive products, such as pharmaceutical sprays or personal care aerosols, that cannot be mixed with propellants.
Advantages of UTC (Under-the-Cap) Filling Machines:
Precision Filling with Vacuum Technology:
UTC filling machines incorporate vacuum filling technology, ensuring precise dosing of propellants and products. This is essential for products like refrigerants (e.g., R134a), technical gases, or automotive aerosols where accuracy is key.
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Filling and Crimping in One Process:
The UTC machine fills the product under the valve and immediately crimps the can in one integrated operation. This ensures a secure and tight seal, preventing leaks and preserving the product's quality.
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Ideal for High-Pressure Products:
UTC machines are designed for handling pressurized gases, including refrigerants, industrial aerosols, and flammable substances. The vacuum environment during filling ensures that the product remains safe and stable during and after filling.
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Reduced Gas Loss:
The vacuum-based filling process reduces gas loss and ensures that the product is filled to the desired pressure. This is particularly useful for applications where maintaining the correct pressure is critical, such as in refrigeration systems.
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Fast and Efficient:
UTC machines offer high-speed filling capabilities, making them suitable for large-scale production runs. This is particularly beneficial for industries where efficiency and high output are crucial, such as automotive, HVAC, and technical aerosol industries.
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Versatility in Gas Types:
UTC filling machines can handle a variety of gases and mixtures, making them suitable for refrigerants, air-conditioning systems, spray paints, and technical aerosols.
The ability to work with high-purity gases like oxygen or nitrogen adds to their versatility in various industrial sectors.
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Recovery System:
Some UTC filling machines incorporate a recovery system, which recovers any excess gas during the filling process. This reduces waste, makes the process more environmentally friendly, and lowers operational costs.
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Why Choose Yangzhou Meida's Aerosol Pressure Filling Machines?
1.High Precision: Both types of machines are built with advanced PLC-controlled systems and touch screen interfaces, ensuring precise and consistent filling.
2.Automation and Efficiency: Yangzhou Meida's machines feature fully automated systems that reduce manual intervention, allowing for unattended operations in some cases.
3.Customizability: The machines can be customized based on specific production needs, whether it's for cosmetic, pharmaceutical, refrigerant, or industrial aerosols.
4.Durability and Reliability: Yangzhou Meida is known for producing robust, high-quality machines that offer long service life and reliable performance, backed by strong after-sales support.
BOV filling machines are ideal for products requiring separation between product and propellant, maintaining purity and ensuring continuous spray, making them perfect for personal care, cosmetics, and pharmaceutical aerosols.
UTC filling machines excel in filling pressurized gases and technical aerosols like refrigerants and industrial products, with the precision and efficiency required for large-scale production.
Yangzhou Meida's expertise in both filling technologies ensures that manufacturers can find the right solution tailored to their product needs, with a strong focus on precision, efficiency, and environmental responsibility.
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