For certain kinds of products, the content and the propellant
must be kept separate; in some cases the product must be
dispensed in whatever position the can is held, from upright to
upside down.
To meet these requirements, dual-compartment
systems were developed, consisting of a valve on which
a flexible, multi-layer bag containing the product is mounted.
The propellant, liquid gas or compressed gas (nitrogen, air),
is contained inside the can, outside the bag. Dual-compartment
systems are suitable for use with gels, shampoos and other
technical, pharmaceutical and cosmetics products.
Coster’s dual-compartment solutions are known as BOV
(Bag-On-Valve) systems. |
