| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve cushion characteristics.SOLUTION: A cushion body 20 is formed of two block materials 22 and 32 made by forming a resin foam having resilience in a rectangular parallelepiped shape. The cushion body is formed by curving the block materials 22 and 32 in a U-shape followed by fitting alternately into the U-shaped inside, and joining the fitting parts. In the cushion body 20, compression deflection is different in a part where two block bodies 22 and 32 are combined to join four opposite piece parts 24, 24, 34, and 34 to each other, and curved parts 26 and 36.</p> |
