Many companies spend millions of dollars every year developing, manufacturing and approving their products. Some companies will turn to aerosol packagings to house their healthcare products. But have you ever wondered what is used to drive the product out of the can?
Traditional aerosol cans are designed to mix the propellant with the product. Therefore, what cost your company a lot to develop, manufacture and approve, must then be mixed with a propellant to dispense your healthcare product.
Bag on Valve, is used as an alternative method to package pharmaceuticals and medical devices. Unlike traditional aerosol packaging, Bag on Valve (BoV) keeps the product separate from the propellant, housing it in a film laminate bag, which is welded to an aerosol valve. Therefore, your precious product maintains its integrity and remains separate from propellants at all times.
Standard BoV packaging covers a broad range from 30 to 500 ml containers. BoV typically uses standard aerosol aluminium cans with 1 inch can openings, together with foil-based packaging bags of four-layer film laminates (for instance PET/ALU/OPA/PE). The film laminate bag is welded to the aerosol valve, which is crimped to the aerosol can in the filling process.
Due to the low permeability rate, BoV is also compatible with commercially available liquefied propellants. These propellants make good choices for products that call for a steady dispensing rate over the life of the can, such as post-foaming gels and creams.
Almost all fluids and more viscous products can be filled into a BoV system, as long as the product’s viscosity is low enough to get it through the valve stem. However, the system does not work well with products that need to be shaken before use, since the bag is filled and doesn’t improve mixing when shaken.