A special packaging ("bag in a box") for drinks that was invented in 1955 by William R. Scholle. It became popular in the 1970s and was mainly used for milk, fruit juices and later also wine. The liquid is contained in a bag made of composite film material (e.g. aluminium/polyethylene or polyethylene/ethyl vinyl alcohol), which is protected by a stabilising sleeve made of corrugated cardboard or wood.
In addition to the classic bag-in-boxes with a cuboid carton, there are also visually more sophisticated versions in a cylindrical shape (bag-in-tube). There is a pouring valve on the bag (see picture below). When emptying, the bag contracts so that the leaking volume is not replaced by air and oxygen contact is avoided. This ensures longer flavour stability. The volume for wine containers is 1.5 / 3 / 5 and 10 litres. Special, inexpensive cool boxes are now also available for this purpose, which can hold up to three bag-in-boxes. Power can be supplied via the normal electrical network, but also via a car cigarette lighter. Initially, this form quickly established itself overseas in countries such as Australia, New Zealand and Argentina, as well as in Northern Europe.
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Thorsten Rahn
Restaurantleiter, Sommelier, Weindozent und Autor; Dresden