Where does Styrofoam beads originate from?

Styrofoam beads originate from polystyrene, a synthetic polymer derived from petroleum. The production process involves the expansion of polystyrene granules through the addition of a blowing agent, which creates lightweight, air-filled beads. These beads are commonly used in various applications, including packaging materials and insulation. The term "Styrofoam" is actually a trademarked brand name for a specific type of expanded polystyrene foam developed by the Dow Chemical Company.