A disposable container developed by the company Lightweight Containers BV for the filling and storage of liquids of all kinds. The system works according to the well-known "bag-in-ball principle" (bag in the ball). The cylinder / barrel-shaped container PET (Plastic off polyethylene terephthalate ) contains a special inner bag that contains the respective beverage. The material of the bag is odorless and tasteless. The content is conveyed by pressure generation in the area between the bag and the outer jacket to the outside, without the used propellant gas comes into contact with the beverage. In addition, the inner bag allows effective sunscreen. Further advantages are reduced transport and storage costs.
The container was for cider. beer and sparkling wine developed because it is particularly suitable for carbonated drinks. Increasingly, it is now used for wine. The system provides protection and longer shelf life of the drink after tapping and is used especially in the catering for the open-plan. According to the manufacturer KeyKeg is an improved alternative to the conventional ones Bag-in-box containers, There are two sizes with 20 or 30 liters volume (corresponds to 26 or 40 bottles Wine à 0.75 l). At by the research institute Geisenheim Tests have shown a high barrier property (low loss) carbonic acid and more important for durability sulphurous acid ). See also below wine vessels,