Processing method of electrostatic flocking

According to the direction of fluff flying, flocking processing can be divided into descending method, ascending method, lateral leaping method and upward and downward leaping method. More than 80% of the domestic flocking processing equipment adopts the descending method, so the descending method is used as an example to illustrate its working principle. Its upper pole plate is a plate-shaped metal mesh frame, and the lower pole plate is a metal flat bracket, which is covered with a base cloth to be flocked with screen-printed adhesive, and the upper and lower pole plates are respectively connected by wires to high voltage Positive and negative outputs on the electrostatic generator. The fluff in the hopper falls on the negative electrode of the metal mesh due to the rotation of the supply shaft. The fluff is charged due to contact with the negative electrode during the fall, resulting in partial alignment in the direction of the electric field. At the same time, the fluff is polarized in the electric field, and the charge with the same polarity as the negative electrode is concentrated at the end far from the negative electrode, while the positive charge is concentrated at the end close to the negative electrode. When the fluff is in contact with the negative electrode, since the conductivity of the electrode is higher than that of the fluff, a conductive current will be generated in the fiber, and the fluff will generate a negative electrostatic charge, which makes the fluff have great straightness and flying in the electric field. The speed falls vertically to the base cloth with the adhesive pattern printed on the screen, forming exquisite suede graphics. In the electrostatic flocking process, the fluff is not only charged due to contact, but also charged due to the polarization of the incoming electric field, which ensures that the fluff moves in the direction of the positive plate, and promotes the fluff to rotate continuously in a uniform electric field, so that the fluff stands upright in the direction of the positive plate. The surface of the base fabric will not lie flat on it.