Numerous industries rely on conveyor belts for production and transportation. Since they run over long distances and are subjected to mechanical stress from goods and idlers, conveyor belts must be extremely stiff, highly tear-resistant (especially at the edges) and durable, as well as abrasion resistant. Adding ULTRASIL® rubber silica as an active filler helps to achieve all these qualities in rubber compounds for conveyor belts. The Silica/Silane-system of Evonik can further enhance the performance of conveyor belts by reducing heat buildup and by lowering the rolling resistance, which means that the lines require less energy. Silanes provide additional material properties. COUPSIL®, a product in which silica is already pre-reacted with silanes, optimizes the rubber's ability to bond to steel cords or metal parts. Evonik can adjust a Silica/Silane-system to the customers’ individual needs.