Conventional aerosol and Bag on Valve (BOV) are two different technologies used in the packaging of pressurized products, such as aerosols. The main difference between the two technologies lies in the way that the product is held inside the can and dispensed.

In a conventional aerosol, the product is held in a reservoir within the can and is dispensed through a nozzle using the pressure of a propellant gas. The propellant gas is a substance, such as a hydrocarbon or a compressed gas, that is used to pressurize the can and push the product out through the nozzle. The propellant gas is in contact with the product and may affect the properties or stability of the product, depending on the specific gas and product being used.

In a BOV, on the other hand, the product is held in a flexible bag inside the can and is dispensed through a valve at the bottom of the can. The bag is sealed at the top and is attached to the valve. When the valve is opened, the product is dispensed directly from the bag. The bag is not in contact with the propellant gas, which is contained in a separate chamber within the can. This allows for the filling of products that are sensitive to certain gases or that may react with the propellant, such as food products, pharmaceuticals, and cosmetics.

Overall, the main difference between conventional aerosol and BOV is the way that the product is held and dispensed inside the can. Conventional aerosols use a reservoir and a nozzle to dispense the product using the pressure of propellant gas, while BOV uses a flexible bag and a valve to dispense the product directly from the bag.

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