Extending shelf-life through packaging: The complexities and variations
Food packaging has a number of key roles. Firstly, it aims to keep food safe from its environment, so it doesn’t get dirty or contaminated. Secondly, it makes it more convenient to transport. Thirdly, it can serve to extend food shelf life. It is this third purpose that combats a range of causes of food decay, and must use a range of materials.
Source: foodnavigator.com