Compressed air can be used to generate vacuum used in the packaging process, air is also used in conveying systems to move food and ingredients.
High pressure oil free compressed air is fed into the bottle blower machine moulds where preforms are heated and the plastic is streched to form the bottle.
Food filling machines use compressed air to fill products such as cakes, pies, and liquid products.
Compressed air is used as a clean medium for cutting products. It is also used for peeling products such as fruit and onions.
To keep oxygen levels low when bottling beer, breweries typically use one of two methods. The first involves flushing the bottle with carbon dioxide before filling it with beer using a long-tube filler. While effective, this method uses a lot of CO₂. The second method is more efficient: the bottle is first evacuated to remove oxygen and then flushed with CO₂, which greatly reduces gas consumption while still protecting the beer.
Air hoists and cylinders are used to move products, at very high speeds able to keep up with modern production practices.
Compressed air is generated to operate pumps such as diaphragm pumps to move liquid products in the production and filling process.
