PE foam is a packaging or protective material made of polyethylene, a type of plastic that is widely used because of its lightness, water resistance and flexibility. Polyethylene foam has a structure like tiny bubbles that form by extruding or pumping air into a soft plastic.
The most prominent characteristic of PE foam is its ability to provide good protection and shock absorption, so it is often used as a protective material in the packaging of fragile or breakable goods during shipping and transportation.