JPS6477917A - Manufacture of capacitor - Google Patents

Abstract

PURPOSE:To miniaturize a capacitor, and to reduce cost by fixing a resin sheet only onto the cut surface of an element through heating and pressing at specific temperature and pressure. CONSTITUTION:An element 1 has electrodes 5 and cut surfaces 6. Continuous epoxy resin sheets 2 are conformed to the cut surfaces 6, trowels 3 building in heaters are pressed, the sheets 2 and the cut surfaces 6 are fixed, and the epoxy resin sheets are cut in conformity with element size, thus acquiring a finished product 4. A temperature range as the conditions of the fixing of the epoxy resin sheets is brought to 60-200 deg.C, a pressure range is brought to 0.2-6.0kg/cm<2>, and a temperature and pressure are applied simultaneously. Since the temperature range and pressure range are determined by the combined evaluation of the kind, thickness, fixing force, etc., of a base film and a coating resin for the epoxy resin sheets, these ranges are extended comparatively. Accordingly, the sheathing thickness of a product acquired extends over 0.02-0.15mm, and the sheets 2 are fastened only to the out surfaces, thus making the volume ratio of the product smaller than that of products obtained through conventional transfer molding to 20-60% in a shape.