Polyurethane Foam Softener: Achieving Plush Comfort for Ergonomic Cushioning Introduction Polyurethane (PU) foam is a versatile material widely employed in various applications, particularly in ergonomic cushioning for seating, mattresses, and other comfort products. Its inherent properties, such as adjustable density, resilience, and durability, make it a favorable choice. However, achieving a truly plush and comfortable...