| http://www.w3.org/ns/prov#value | - ied with a solution of a unvulcanized rubber in an organic solvent, such as toluene and the like, that is a rubber cement anddried, after which the thus treated vulcanized rubber and an unvulcanized rubber are superposed and pressed and vulcanized to ahdere the unvulcanized rubber to the vulcanized rubber.
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