Welcome. 1  Welcome to the Internet home of Park County School District 6. Together, the eight schools that comprise our district provide a safe, empowering learning environment for kindergarten through twelfth grade students in Cody, Wyoming.
Insulation. Styrofoam insulates much more effectively than plastic, which means your cold drinks stay colder longer and your hot drinks stay hotter. Plastic cups are not recommended for hot drinks, and they do not have the insulation properties of Styrofoam.
Polystyrene, which already had been invented, was a good insulator but too brittle. McIntire tried to make a new rubber-like polymer by combining styrene with a volatile liquid called isobutylene under pressure. The result was a foam polystyrene with bubble, and was 30 times lighter than regular polystyrene. The Dow Chemical Company introduced Styrofoam products to the United State in 1954. How Are Foamed Polystyrene or Styrofoam Products Made. Foamed polystyrene starts as small spherical beads that contain an expanding agent called hydrocarbon.