Bag-in-box

The BiB is currently used to package wine, soda fountain syrup products, milk, liquid chemicals, and water.

The first commercial BiB system was invented by American chemist William R. Scholle in 1955 for the safe transportation and dispensing of battery acid.

[1] BiB technology is still used for its original application of dispensing sulfuric acid for filling lead-acid batteries in garages and dealerships.

The port itself contains a one-way valve which opens only under pressure from the attached connector and which prevents contamination of the syrup in the bag.

BiB also offers environmental benefits by allowing contents of 1.5–1,000 litres (0.4–264.2 US gal), so that less packaging or labeling is required.

McDonald's procures syrup for its soda fountains from The Coca-Cola Company in stainless steel tanks rather than BiBs for this reason.

An original design required that the consumer cut the corner off the bladder inside the box, pour out the desired quantity of wine and then reseal it with a special peg.

[6] In 1967, Charles Malpas and Penfolds Wines patented a plastic, air-tight tap welded into an aluminised film bladder, making storage much more convenient for consumers.

[1] All modern wine casks now utilise some sort of plastic tap, which is exposed by tearing away a perforated panel on the box.

These packs are typically from 10 to 1200 liters and offer the advantage of cheap, disposable and transport efficient packaging.