1, First determine the processing of v-belts type and transmission power determine the type.

 2, According to the belt and power transmission belt tension at runtime.

 3, According to the tape tension to determine the bearing capacity of strong layer. 

4, According to the bearing capacity of the powerful layer and the size of the triangle section and power cord, number of root diameter choose cord . 

5, Polyester Cord selection principle: 

(1) In the area of cord carrying wire breaking strength in the range of 10% ~ 30%.

 (2) The selection of cord meet the dynamic performance of tape finally, including adhesive force.

 (3) The cord arrangement, there is a certain gap between line and line, in order to meet the requirement of penetration at rubber vulcanization.