| 摘要 |
Spark perforation of synthetic plastic film is carried out by applying electrodes to opposite ends of a portion of the film submerged in a water bath, and applying short fast rise time electrical pulses of an amplitude sufficient to ensure dielectric breakdown of the film. The size of the perforations formed can be controlled by altering the temperature of the water bath. By using short fast pulses, energy consumption, film decomposition and electrode erosion are minimized, and the high dielectric strength of water can be exploited to control perforation whilst its conductivity can be exploited to remove residual electric charges from the film. |
