Patent ID: 9534110
Date: 2017-01-03
CPC Classifications: B60C,C08J,C08K,C08L

Claim:
1. A rubber composition comprising: a rubber component; and a hydrophilic resin, wherein the rubber composition includes a complex, the complex being formed by coating at least a portion of the hydrophilic resin with a resin having affinity for the rubber component so that a cavity is formed in the complex, and the complex is made of a fiber having a core-sheath structure, the core-sheath structure including a core portion made of the hydrophilic resin and a sheath portion made of the resin having affinity for the rubber component, wherein the rubber composition further comprises a foaming agent, the rubber composition containing the foaming agent is foamed by kneading and vulcanizing, the resin having affinity for the rubber component is a low melting point resin having a melting point lower than a highest vulcanizing temperature, and the cavity has an average diameter of 0.01 mm to 1 mm.