| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide solid rubber having superiority in both of the durability and the repulsion performance. <P>SOLUTION: This solid rubber 11 is provided with a base 13 and multiple pimples 15 projecting upward from the base 13. This solid rubber 11 comprises a first layer 17 and a second layer 19. The first layer is superimposed on the second layer 19. The first layer 17 includes all of the pimples 15 and the upper part of the base 13. The second layer 19 comprises the lower part of the base 13. A boundary corner part C is included in the first layer 17. The first layer 17 is molded by cross-linking a rubber composition including natural rubber or polyisoprene of 70 mass% or more in the base polymer. The second layer 19 is molded by cross-linking the rubber composition including polybutadiene of 40 mass% or more in the base polymer. <P>COPYRIGHT: (C)2004,JPO</p> |
