Expanded polystyrene (EPS) is among the biggest commodity polymers produced in the world. The total world demand in 2007 was over 4 million tonnes. EPS is used in many applications like thermal insulation board in buildings, lightweight fill in road building, packaging, cushioning of valuable goods and food packaging. Western Europe contributes 27 percent of the global demand for EPS and was more than 1 million tonnes in 2007. The corresponding value of this volume is approximately 3 billion Euro. The average annual growth is expected to be 2.5 percent per annum up to 2010.