Foam structures Several types of polymeric foams are used for cushioning, the most common being expanded polystyrene, polypropylene, polyethylene, and polyurethane. These can be molded engineered shapes or sheets which are cut and glued into cushion structures.
Foam structures Different types of polymeric foams are used for cushioning; examples include expanded polystyrene, polypropylene, polyethylene, and polyurethane. These materials can be molded into shapes or sheets that are later assembled into cushion structures.