Conveyor belt comprising a plurality of adjacent conveyor belt elements and a plurality of rods connecting adjacent conveyor belt elements, wherein each belt element comprises: - an elongate body having a support surface; - first protrusions arranged on a first side of the elongate body and having aligned openings; - second protrusions arranged on a second side opposite of the first side and having aligned openings, wherein the first protrusions interlock with second protrusions of an adjacent belt element and a connecting rod extends through the openings of the interlocked first and second protrusions, and wherein at least some of the belt elements further comprise a friction layer arranged on the support surface, wherein the support surface is provided with a plurality of through holes extending from the support surface to the opposite surface of the elongate body, and wherein the friction layer material extends through the through holes and at least partially over the opposite surface of the elongate body to provide anchoring elements for the friction layer characterized in that the elongate body widens linearly from one longitudinal end to the other longitudinal end, wherein the friction layer material extending through a pair of through holes is connected to each other via friction layer material extending over the opposite surface of the elongate body and between the pair of through holes. - an elongate body having a support surface; - first protrusions arranged on a first side of the elongate body and having aligned openings; - second protrusions arranged on a second side opposite of the first side and having aligned openings, wherein the first protrusions interlock with second protrusions of an adjacent belt element and a connecting rod extends through the openings of the interlocked first and second protrusions, and wherein at least some of the belt elements further comprise a friction layer arranged on the support surface, wherein the support surface is provided with a plurality of through holes extending from the support surface to the opposite surface of the elongate body, and wherein the friction layer material extends through the through holes and at least partially over the opposite surface of the elongate body to provide anchoring elements for the friction layer characterized in that the elongate body widens linearly from one longitudinal end to the other longitudinal end, wherein the friction layer material extending through a pair of through holes is connected to each other via friction layer material extending over the opposite surface of the elongate body and between the pair of through holes. wherein the first protrusions interlock with second protrusions of an adjacent belt element and a connecting rod extends through the openings of the interlocked first and second protrusions, and wherein at least some of the belt elements further comprise a friction layer arranged on the support surface, wherein the support surface is provided with a plurality of through holes extending from the support surface to the opposite surface of the elongate body, and wherein the friction layer material extends through the through holes and at least partially over the opposite surface of the elongate body to provide anchoring elements for the friction layer characterized in that the elongate body widens linearly from one longitudinal end to the other longitudinal end, wherein the friction layer material extending through a pair of through holes is connected to each other via friction layer material extending over the opposite surface of the elongate body and between the pair of through holes.