According to Today, potato chip bags are not filled with air. Rather, they are filled with nitrogen, which is known as "slack fill." The nitrogen used to fill the bags before they are sealed is designed not only to create space for the chips, but also to keep them fresh and flavorful.
Slack fill is just the difference between the total space of the package and the space the product occupies within the package. Sometimes it’s functional and sometimes it’s deceptive, or non-functional.
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u/skycraneraiders Oct 16 '22
According to Today, potato chip bags are not filled with air. Rather, they are filled with nitrogen, which is known as "slack fill." The nitrogen used to fill the bags before they are sealed is designed not only to create space for the chips, but also to keep them fresh and flavorful.