| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber expansion joint having high slide resistance property and prevent peeling-off of a slip preventing particle. SOLUTION: This rubber expansion joint 10 is provided with an elastic material layer 30 laminated on a surface of a basic material 20 and a hard resin material layer 40 laminated on an upper face of the elastic material layer 30. The elastic material layer 30 and the hard resin material layer 40 hold the slip preventing particle 50. Modulus of elasticity of the elastic material layer 30 is higher than modulus of elasticity of the basic material 20 and is lower than modulus of elasticity of the hard resin material layer 40. COPYRIGHT: (C)2007,JPO&INPIT
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