Patent ID: 7261929

Claim:
A conveyor belt comprising at least one spliced joint, said spliced joint comprising a plurality of steel strands and a rubber composition applied to said steel strands, said rubber composition comprising 100 parts by weight of rubber, said rubber comprising from about 1 to about 20 parts by weight of syndiotactic polybutadiene; wherein said rubber composition is applied to said steel strands via a process comprising: exposing a plurality of strands at two belt ends; and providing two arrays of unvulcanized strips of said rubber composition, each strip of rubber having a preformed cross-sectional profiles, one array of strips being an array of bottom strips having a plurality of substantially parallel strand receiving grooves located on a first side or a second side of the strips, the other array of strips being an array of top strips; placing the exposed strands of the belt ends being joined in the grooves of the one array of bottom strips; placing the array of top strips overlying the array of bottom strips; and vulcanizing the strips together and to strands thereby forming the spliced joint; wherein said spliced joint has a dynamic adhesion rating of at least 30,000 cycles, based on AS-1333, Appendix K, wherein the dynamic adhesion is measured at a frequency of 10 cycles/80 seconds with a minimum load of 6 percent of the static pullout force and a maximum load of 50 percent of the static pullout force.