Panasonic Intellectual Property Management Co., Ltd.

Hayato Kato

Takashi Sato

Toru Tanaka

Kazuhito Odane

Mitsuhisa Yoshimura

Kazuo Fujiwara

Masami Tsubaki

Katsuyoshi Shingu

Tatsushi Ota

An electrolytic capacitor including a porous sintered body formed by a mold. The electrolytic capacitor element including the porous sintered body having a first surface, a second surface opposed to the first surface, a third surface and a fourth surface that are opposed to each other and intersect the first surface and the second surface, and a fifth surface and a sixth surface that are opposed to each other and intersect the first surface, the second surface, the third surface, and the fourth surface. The porous sintered body satisfies a relationship of La≤Lb, where La represents a shortest length in the longitudinal direction from the boundary line to the first surface and Lb represents a shortest length in the longitudinal direction from the boundary line to the second surface, when viewed from a normal direction of the fifth surface or the sixth surface.

Electrolytic capacitor having improved leakage current suppression

A mold includes a pair of first mold parts, a pair of second mold parts, and a pair of third mold parts that define six surfaces of a molded body substantially having a rectangular parallelepiped shape. At least one of the pair of third mold parts includes an upper mold part and a lower mold part. The upper mold part defines an upper space of a molding space, and the lower mold part defines a lower space of the molding space. The upper mold part and the lower mold part are individually slidable. The lower mold part protrudes toward the molding space with respect to the upper mold part so that a step portion is formed. The upper mold part is slidable in cooperation with the lower mold part in a state in which the step portion is formed or absent.

Mold, manufacturing device, and manufacturing method for manufacturing molded body

A fluid dispersion obtained by mixing oxide particles and water is sprayed to a raw aluminum foil from a direction opposite to a travelling direction of the raw aluminum foil while the raw aluminum foil is allowed to travel. In this way, a roll-pressed mark of the raw aluminum foil is eliminated, and thus aluminum foil for aluminum electrolytic capacitor electrode is produced. Pyramidal-shaped recesses each having an acute angle tip are present all over a surface of the aluminum foil.

Aluminum foil for aluminum electrolytic capacitor electrode and method for manufacturing the same

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Osaka, Japan

Hayato Kato