Impact of Wire Spacing on Surface Potential Uniformity in PP Films Corona Charged by Two - and Three-Wire Electrodes
Résumé
Corona discharge is applied in a wide range of industries, including ozone generation, surface treatment, and specifically in electrostatic applications including electrostatic precipitation and separation. Corona discharge is an efficient method of charging insulating films, non-woven media, and granular materials in certain situations. The success of the process depends on the degree and consistency of the electric charge distribution on the surfaces of the materials being exposed. The goal of this work is to assess the uniformity of discharge generated by two-wire or three-wire corona electrodes by modifying the distance between wires. The experiments were carried out with the objective to record the electric potential at the surface of polypropylene (PP) films after exposure to a corona discharge generated by these electrode configurations. The obtained results revealed that the uniformity of the charge distribution depends on the number of wires and the relative distance between them.
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