Matsushita Electric Industrial Co., Ltd.

Seita Takahashi

Masanori Okabayashi

Kazuo Okamura

Mitsuhisa Yoshimura

Hiroyuki Nakano

Kenji Yoshida

Takahiro Suzuki

Katsuyuki Nakamura

Naomi Kurihara

Katsunori Matsuda

Kazuaki Nakanishi

A method of manufacturing a positive electrode foil of an aluminum electrolytic capacitor is provided in which anodizing conditions are optimally determined and automatically set to minimize the loss of production and to produce a constant quality of the positive electrode foil. The method comprises an etching process and an anodizing process. An etched foil produced in the etching process is subjected to a constant current inspection, and then, the anodizing conditions are determined from the result of the constant current inspection. The anodizing conditions are transferred to a control panel in the anodizing process where they are automatically registered as its settings. Also, an apparatus for manufacturing the positive electrode foil is provided which has a voltage sensor connected between an output running roller and cathode electrodes in an anodizing tank. A voltage measured by the voltage sensor is fed back to a direct-current source for controlling its output voltage.

Method and apparatus for manufacturing positive electrode foil of aluminum electrolytic capacitor

A method for making an anode foil for an aluminum electrolytic capacitor which comprises a first anodizing step of forming an anodized film on the surface of an aluminum foil, an immersion treatment step of immersing this aluminum foil in an aqueous solution containing alkaline metal ions, a step of feeding an electric current to the aluminum foil from a current feeding cell having a current feeding solution 6 and a current feeding electrode connected to the anode of a direct-current power source , and a second anodizing step of forming by applying a higher voltage than in the first anodizing step.

Method for making anode foil for aluminum electrolytic capacitor

Growing community of inventors

Hirakata, Japan

Seita Takahashi