METHOD OF MANUFACTURING ELECTROLYTIC CAPACITOR
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United States of America Patent
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Issued Date -
Sep 29, 2011
app pub date -
Mar 25, 2011
filing date -
Mar 26, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of manufacturing an electrolytic capacitor according to the present invention includes the steps of: forming a capacitor element by winding an anode foil having a roughened surface on which a dielectric film is formed, a cathode foil, and a separator containing a synthetic fiber and a water-soluble binder; immersing the capacitor element in a chemical conversion solution containing water as a main solvent for re-chemical conversion; subjecting the capacitor element subjected to re-chemical conversion to first heat treatment at a temperature of not less than 60° C. and less than 100° C.; and subjecting the capacitor element subjected to the first heat treatment to second heat treatment at a temperature of not less than 150° C. and less than a melting point of the synthetic fiber.
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