Lots of high-value liquid products, like paint or wine, require their packaging to be effectively resealed in-between usages, to stop their volatile gaseous components from escaping.
Today’s invention is an alternative to the established technique of ensuring good seals and possibly reducing internal air pressure, so that a vapour-rich, stable atmosphere is maintained inside.
It consists of a small cannister, like a ‘soda bomb’, which contains extra, pressurised vapour of the type given off by the contained liquid.
A valve on this is briefly opened each time the container is sealed, so that less volatile material is lost from the liquid into the headspace above. Opening the can also results in an enhanced scent of the product being given off (which for wine is good thing).