ALUMINUM ELECTROLYTIC CAPACITOR AND ITS MANUFACTURING METHOD

Title:

ALUMINUM ELECTROLYTIC CAPACITOR AND ITS MANUFACTURING METHOD

Document Type and Number:

WIPO Patent Application WO/2005/076300

Kind Code:

A1

Abstract:

An aluminum electrolytic capacitor wherein an anode foil to which an anode lead is connected, a cathode foil to which a cathode lead is connected, and a separator are wound together, a capacitor element impregnated with a driving electrolyte is contained in a metal case of a bottomed tube, the opening of the metal case is closed by a sealing body, and the leads are bent along the outer surface of the sealing body. The aluminum electrolytic capacitor is characterized in that the sealing body is formed of a rubber composition containing a rubber component the main component of which is butyl rubber produced by crosslinking isobutylene-isoprene copolymer having 1.2 to 2.5 mol% of degree of unsaturation is crosslinked with alkylphenol formaldehyde resin and 100 to 200 parts by mass of reinforcing material based on 100 parts by means of the rubber component and in that the Wallace hardness conforming to the international rubber hardness (IRHD) of the rubber composition is 80 Hw or more, and the tensile elastic modulus at the solder reflow temperature is 4 N/mm² or more.

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Inventors:

MINATO KOICHIRO
KURIMOTO HIROSHI
YAMANE JUNJI
WATANABE YOSHIHIRO

Application Number:

PCT/JP2005/001494

Publication Date:

August 18, 2005

Filing Date:

February 02, 2005

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC IND CO LTD (JP)
MINATO KOICHIRO
KURIMOTO HIROSHI
YAMANE JUNJI
WATANABE YOSHIHIRO

International Classes:

H01G9/00; H01G9/035; H01G9/004; H01G9/10; H01G9/145; (IPC1-7): H01G9/10

Foreign References:

JPS6289125U	1987-06-08
JP2002289482A	2002-10-04
JPH07307254A	1995-11-21
JP2001351587A	2001-12-21
JPH07122467A	1995-05-12
JP2002203751A	2002-07-19
JP2003031448A	2003-01-31

Attorney, Agent or Firm:

Kotani, Etsuji (2-2 Nakanoshima 2-chome, Kita-k, Osaka-shi Osaka 05, JP)

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