| abstract |
(57) Abstract: A seat cushion pad having a high damping property capable of lowering the vibration transmissibility around 6 Hz to the same level as or less than the conventional one while reducing the resonance magnification at 2 to 4 Hz. provide. A seat cushion pad made of a polyurethane foam molded by injecting a polyurethane foam material into a mold, wherein the air permeability of the seat cushion pad is in the range of 0.05 to 1.5 cfm, and a core is provided. The layer has a hysteresis loss of 17% or less. More preferably, the air permeability is 0.1 to 1.5 cfm, and the hysteresis loss of the core layer is 15% or less. |