By Aurena Laboratories
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Bag-on-Valve (BoV) spray products from Aurena Laboratories
Bag-on-Valve (BoV) technology provides an advanced solution for sprayable medical products, delivering a clear set of user benefits. These include environmental friendliness, enhanced economy and efficiency, ease of use and greater comfort for end-user.
Aurena Laboratories AB is a specialist in the manufacturing of BoV-based products for the consumer and healthcare markets.
Bag-on-Valve (BoV) applications
Bag-on-valve technology can be used to dispense most products that can be delivered by conventional aerosol, as well as some products that are not suitable for aerosol dispensing. These include viscous gels, creams and ointments, as well as liquids.
BoV is gaining in popularity as an innovative packaging, particularly in applications with sensitive high purity products or where user convenience is a consideration.
Aurena Laboratories uses BoV delivery for its skin and wound care products as well as its high purity saline formulations.
However, a far wider range of BoV applications are possible including:
- Pharma & Medical Devices: where safety is indispensable
- Food & Nutrition: to preserve taste and goodness
- Cosmetics: Easy to use and pleasant on the skin
The core of the Bag-on-Valve system is an aerosol spray valve welded to a sealed poly-laminated aluminum bag. The bag, filled with product, is placed inside a tinplate or aluminum can that is then pressurized with compressed air or nitrogen propellant.
The propellant then exerts pressure on the outside of the bag, ‘squeezing’ product through nozzle in a spray when the valve is actuated.
The key difference with a standard aerosol is that product and propellant remain physically separate.
This technology allows a number of potent benefits in delivery and user convenience:
- Suitable for both liquid and viscous products
- Up to 100% product emptying
- No risk of diluting, adulterating or contaminating product
- Longer shelf life with less or no preservatives
- Even and controlled spraying pattern for optimal result
- No pumping motion needed
- Can be used at all angles
- Reduced spray noise
- Less-chilling product discharge
- Hygienic and sterilizable
- Eco-friendly and non-flammable compressed air or nitrogen propellant
- Fully recyclable
BoV therefore provides a superior form of spray dispensing that is particularly valuable in high quality products.
BoV is also a flexible solution that can be integrated into the full range of modern packaging formats with a wide choice of can shapes and formats, valve types, caps, etc.
Aurena has produced a Bag-on-Valve White Paper that explains the technology in greater detail. including materials selection, filling methods used in manufacture and discussion of potential BoV applications (see Resources below).
How Bag-on-Valve works: diagram shows (1) male or female valve, (2) welded bag containing (3) product kept under pressure by (4) propellant squeezing product out of bag through valve to (5) actuator nozzle mounted on (6) can.