When you need top-notch barrier protection for your product, aluminum foil is often the go-to choice. This versatile material is added to laminate structures to provide unbeatable protection against moisture, oxygen, and other environmental factors. However, when only slightly better barrier properties are needed, metalized films can be used instead of foil. One key difference is that foil is a separate layer in the laminate, while metalized film is a plastic film that has been coated with a thin layer of aluminum. So whether you need maximum protection or just a little extra, the right choice of barrier material can make all the difference in keeping your product fresh and protected.