Poly v-belts is a flat belt as the base, the inner surface is lined with equally spaced longitudinal 40°trapezoidal wedge, and poly v-belts’ working surface is the side of the wedge. Common PL type tooth pitch 4.7, there are 4 models: PJ , PK, PL and PM, poly v-belts has the softness and toughness of flat belt and the compactness and efficiency of v- belt! It is especially suitable for high speed transmission with compact structure and high transmission power, generally used in all kinds of traction machines and extruders, and has high efficiency traction for cables, PVC pipes, hoses, shaped strips, plastic products and other products!