re:how to improve the flatness of plastic woven bags?

how to improve the flatness of plastic woven bags?
Not only the quality of the raw materials is required, but also important in the production. For example, the speed of the three machines, such as the pick-up weft feeder, the speed governor and the wire drawing machine, must be synchronized so as to ensure the balance of four wefts and wefts, At the same time to improve the shelves from the shelves from the motor gear and force from the gear teeth of the motor, so that the balance between the various components, such as tension cloth roll cloth smooth. The most important time to improve circular ball machine jumper spring straight, so that his elastic increased, so that the direction of the cam and the four comb smooth pressure, there will be no twisted wire phenomenon, the appearance of woven bags will be much flat.