See under Bag-in-Box.
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...
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Technischer Lehrer, staatl. geprüfter Sommelier, Hotelfachschule Heidelberg