Splicing joint and method for synchronous drive belt

摘要

A splice joint is for joining first and second synchronous drive belt ends (22, 24) of a belt type comprising a reinforcement material layer (19, 20) covering a base layer (17) formed from a first thermoplastic material. The joint comprises a fused portion of the base layer (17) of the first and second belt ends (22, 24) that define a splice region. At least one coating layer (62) of thermoplastic material overlaps the reinforcement layer of the end portions in the splice region. The coating layer (62) is comprised of a second elastomeric material intended to melt and penetrate into interstices of the reinforcement material layer (19, 20) while within the mold press. Migration of the base layer material through the reinforcement material layer (19, 20) 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.