"An investment in knowledge pays the best interest." -Benjamin Franklin
Sunday, May 29, 2016
Why are the insides of chip bags shiny?
When you open a chip bag, you'll likely notice that the inside is shiny and foil-like. This shiny material is a metallized polymer layer that is usually coated with aluminum. The metallized layer serves as an effective air and moisture barrier, playing a large role in extending the product's shelf life. The layer thus serves primarily to better preserve the chips inside.