Analysis of BOV Aerosol Packaging Technology and Filling Equipment

BOV(bag-on-valve) aerosol packaging mainly consists of contents (active ingredients) and propellants. The contents serve as the core functional carrier, such as the insecticidal active ingredients in insecticides or the styling polymers in hair spray, directly determining the product's efficacy. The propellant acts as the power source, releasing pressure to convert the contents into a mist for spray application. Common hydrocarbon propellants, such as propane and butane, exist as gases at room temperature and are stored in compressed form within the canister to ensure stable and efficient spray performance

(1) Safety and Hygiene Advantages  

① Eliminates the risk of raw material leakage: The propellant uses purified compressed air, replacing corrosive components such as dimethyl ether and propane, thereby reducing the risk of raw material leakage caused by corrosion in aerosol cans.
② Isolated design for enhanced hygiene: The liquid is enclosed in a bag and suspended at the center of the canister, separated from the external propellant gas, preventing direct contact between the liquid and the canister and reducing the risk of contamination.

(2) Production Process and Filling Advantages

① Precise and controllable forced filling: During production, the liquid is first sealed and pressurized, then forced into the balloon bag, ensuring precise filling efficiency and stability.
② Safer gas usage: The external propellant gas is compressed air, which reduces safety hazards during production and use compared to flammable and explosive gases such as propane.

(3) Usage and environmental advantages

① Reusability: When the contents of the bottle are depleted, the compressed air remains unused, and the tank can be refilled and reused, reducing packaging waste and aligning with environmental principles.
② Reduced resource waste: There is no need to discard the entire tank due to gas consumption, thereby lowering usage costs and environmental impact.

(4) Design and structural advantages

More reliable structural isolation: The valve with an airbag and the tank's sealed design, combined with the structure where the liquid is suspended at the center, ensure complete separation of gas and liquid, enhancing product reliability.

Weijing Intelligent Equipment provides manufacturers with the latest semi-automatic dual-component aerosol Filling Machines and fully automatic dual-component filling machines to choose from. We offer optimal solutions for aerosol production across various industries. Manufacturers can select either a small-scale dual-component aerosol filling machine or a fully automatic dual-component aerosol filling production line based on their budget and production volume.

(1) Semi-automatic BOV aerosol filling machine

(2) Fully automatic BOV aerosol filling machine