Polyurethane foam has become one of the most widely used insulation and cushioning materials, finding use in many areas of industry because of its versatile physical properties. It is a form of polyurethane that is obtained by the expansion and solidification of a liquid mixture of polyols and diisocyanates in the presence of blowing agents, catalysts and additives. This foam can be either flexible or rigid, depending on the formula used, and has multiple applications.