Bag-in-box

A bag-in-box or BiB is a type of container for the storage and transportation of liquids. It consists of a strong (or plastic bag), usually made of several layers of metallised film or other plastics, seated inside a corrugated fiberboard box. The bag is supplied to the company which will fill it as an empty pre-made bag. The company filling the bag with its product generally removes the tap, fills the bag (with wine, juice or other liquid) and replaces the tap and then the bag is placed in the box. The bags are available as singles for semi-automatic machines or as web bags, where the bags have perforations between each one. These are used on automated filling systems where the bag is separated on line either before the bag is automatically filled or after. Depending on the end use there are a number of options that can be used on the bag instead of the tap. The bags can be filled from chilled product temperatures up to 85 degrees Celsius.

Bag-in-box packaging can be made using form seal fill (FSF) technology, where the bags are manufactured on-line from reels of film, then the FlexTap is inserted then filled on an integral rotary head filler. This technology is currently limited to the packing of wine and soda fountain syrup products.

The first commercial bag-in-box system was invented by William R. Scholle in 1955 for the safe transportation and dispensing of battery acid. In 1991, William Scholle was inducted into the packaging hall of fame for his invention.

The BiB has many common commercial applications. One of the most common uses of BiBs by commercial users are to supply syrup to soft drink fountains and to dispense bulk supplied condiments such as ketchup or mustard in the foodservice industry specifically in fast food outlets. BiB technology is still used for its original application of dispensing sulfuric acid for filling lead-acid batteries in garages and dealerships. As explained further below, BiBs have also been implemented for consumer applications like boxed wine.

For commercial syrup applications, the customer opens one end of the box (sometimes via a pre-scored opening) and connects a compatible connector to a fitment on the bag to pump out its contents. The fitment itself contains a one-way valve which opens only with pressure from the attached connector and which prevents contamination of the syrup in the bag. For consumer applications like boxed wine, there is a tap already present on the bag, so all the consumer has to do is locate the tap on the outside of the box.

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Wikipedia