Foam is a substance that is formed by trapping many gas bubbles in a liquid or solid. These Flexible or cushioning materials can bend, flex or absorb an impact without cracking and delaminating. Typical materials used include Ethylene, Propylene, PVC, ABS, and Urethanes; applications include molded foam moldings, cast foam castings, or extruded foam extrusions. KEYWORDS for this process: open cell, closed cell, foam rubber, elastomeric foam