a splice joint is for joining first and second synchronous drive belt ends , of the belt type comprising a reinforcement material layer covering a base layer formed from a first thermoplastic material . the joint comprises a fused portion of the base layer of the first and second belt ends that define a splice region . at least one coating layer of thermoplastic material overlaps the reinforcement layer of the end portions in the splice region . the coating layer is comprised of a second elastomeric material intended to melt and penetrate into interstices of the reinforcement material layer while within the mold press . migration of the base layer material through the reinforcement material layer to the pulley - engaging outer surface is thereby inhibited . the second elastomeric material composing the coating layer may be selected to provide desired frictional and wear characteristics .