Understanding Styrofoam What is Styrofoam? Styrofoam is a lightweight, insulating material made from expanded polystyrene (EPS) foam. It is commonly used for packaging materials, disposable food containers, and drink cups due to its low cost, insulating properties, and lightweight nature. Is Styrofoam the Same as Polystyrene? While Styrofoam is often used as a generic term for expanded polystyrene foam, they […]