| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyol composition capable of manufacturing an urethane pad capable of suppressing shaking feeling.SOLUTION: Tensile stress of a soft urethane foam 10 can be reduced by blending polyrotaxane 13 with a polyol composition. Compressive stress in a vertical direction by body weight of a user seated and tensile stress by vibration input in a lateral direction act on an urethane pad. However, the tensile stress of the soft polyurethane foam 10 is reduced so that the direction (inclination) of a resultant force obtained by synthesizing the compressive stress and the tensile stress can approach the vertical direction. Shaking feeling can be suppressed by reducing an angle at which the hip (ischium) of the user becomes inclined with respect to the vertical direction by vibration input in the lateral direction.SELECTED DRAWING: Figure 1 |
