US Patent 7754120 Three layer composite panel from recycled polyurethanes

A process for the manufacture of a three layer composite panel with improved moisture resistance, minimal thickness swell, thermal stability, and a smooth hard surface suitable for direct lamination. The composite panel is produced utilizing recycled polyurethanes, preferably obtained from vehicle headliners, insulated foam panels, foam insulation, energy absorbent panels, and polyisocyanurate foams along with materials incidental to at least one recycled component including composite resins, cloth, adhesives, fiberglass, and plastics. The composite panel is composed of a core layer pressed between two surface layers.