| 摘要 |
PROBLEM TO BE SOLVED: To provide a seat cushion pad improving comfort. SOLUTION: In the pad made of urethane foam, a density ratio of a surface layer A (1 mm thick) located at the seating surface to the core layer E (10 mm thick) located at the middle of the pad is set in a range of 1.13 to 1.60. The rigidity of the surface layer A is higher than that of the core layer E. By this, a loaded pressure is properly distributed to give a user a flat feeling. On the other hand, the core layer has enough elasticity against deformation to give the user elastic feeling at the same time. |
