Title:
MANUFACTURE OF ELECTRODE FOIL FOR ALUMINUM ELECTROLYTIC CAPACITOR
Document Type and Number:
Japanese Patent JP3155969
Kind Code:
B2
Abstract:
PURPOSE: To enhance an aluminum electrolytic capacitor more in electrostatic capacity by a method wherein an etched aluminum foil is boiled in pure water of high temperature and then anodized in boric acid water solution which contains at least unsaturated dicarboxylic acid or its salt.
CONSTITUTION: An etched aluminum foil is dipped into pure water of high temperature for a prescribed time for a boiling treatment and then subjected to a main chemical conversion treatment (anodization) and furthermore a second chemical conversion treatment. The etched aluminum foil is anodized at least once in boric acid water solution which contains at least unsaturated dicarboxylic acid or its salt in both a main chemical conversion treatment and a second chemical conversion treatment. By this setup, an electrode foil high in electrostatic capacity can be manufactured.
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Inventors:
Manabu Kazuhara
Kazuyuki Adachi
Yuu Endo
Noboru Haga
Mikio Sasaki
Kazuyuki Adachi
Yuu Endo
Noboru Haga
Mikio Sasaki
Application Number:
JP41074190A
Publication Date:
April 16, 2001
Filing Date:
December 14, 1990
Export Citation:
Assignee:
ELNA Co., Ltd.
International Classes:
C25D11/06; C25D11/16; C25F3/04; H01G9/04; (IPC1-7): H01G9/04; C25D11/06
Domestic Patent References:
| JP55124226A | ||||
| JP5558391A | ||||
| JP60157215A | ||||
| JP1289107A |
Attorney, Agent or Firm:
Takuya Ohhara