| 摘要 |
PURPOSE:To maintain creeping distances between electrodes and make a cut surface clean by a method wherein a laser beam is applied to the cut surface to burn the electrodes exposed on the end surface and the edges of the electrodes are made to retreat from the end surface. CONSTITUTION:A defocused laser beam with a relatively low energy density i s applied to the whole cut surface 24 of a zigzag type film capacitor 22 successively. As a film sheet 12 is thicker than electrodes 16a and 16b and has a higher transmittance of a laser beam, the laser beam is mostly absorbed by the electrodes 16a and 16b and only the electrodes 16a and 16b are burnt and the respective edges 28a and 28b of the electrodes 16a and 16b are made to retreat from the cut surface 24 of the film capacitor 22. With this constitution, the creeping distance between the adjoining electrodes 16a and 16b can be increased and, at the same time, adhering substances on the cut surface 24 such as electrode metal pieces can be removed and a clean end surface can be obtained.
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