抄録
Charges caused by ESD on PET film surfaces are neutralized with an AC eliminator. In our experiment, the space between the eliminator and a fixed film is set to 7mm, and the film is also paralleled with an earthed copper plate with distance from 3mm up to 100mm. To neutralize the charges on the film, at least several cycles of AC voltage must be applied. At low frequencies, the minimum numbers of cycles for the neutralization are 2 for the film/plate distance of 3mm and 5 for the distance of 8mm. When the frequency becomes higher than 100Hz, the charge coming to the film's surface decreases. Therefore, more cycles of AC voltage are required. It is also found that a capacity coupled eliminator neutralizes the charges faster than a direct coupled eliminator. The total charge coming to the film during the minimum numbers of cycles of AC voltage is estimated, and it seems to be the same for the two eliminators and for all the frequencies.
