Will Mylar Bags Set Off Metal Detectors

Mylar bags are a popular choice for storing and protecting a variety of items, including food, documents, and other valuable goods. One question that many people have when using Mylar bags is whether or not they will set off metal detectors.

The short answer is that it is possible for Mylar bags to set off metal detectors, but it is not necessarily a common occurrence.

Mylar bags are made of a type of plastic called polyethylene terephthalate (PET). PET is a non-metallic material, so Mylar bags do not contain any metal on their own. However, Mylar bags can sometimes contain metal objects or be placed in close proximity to metal objects, which can cause them to set off a metal detector.

For example, if a Mylar bag contains a can of food that has a metal pull-tab, the metal detector may pick up on the metal in the can and cause the alarm to sound. Similarly, if a Mylar bag is placed near a metal object, such as a metal zipper on a bag or a metal belt buckle, the metal detector may be able to detect the metal through the Mylar bag.