Nippon Pillar Packing Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Shoji Kato

Katsunori Sugita

Masahiko Takaoka

Kazuhiko Otawa

Keiji Okada

Hideto Hashiguchi

Masao Konaka

To provide a separator for a fuel cell made of graphite excellent in mechanical strength and gas impermeability as well as electric characteristic properties, a separator for a fuel cell is produced from a molded body produced by filling a graphite powderwhose surface is coated with resinin a molding die and by pressure-molding the powder. Such a molded body is provided with excellent mechanical strength of 40 MPa of bending strength or higher, 10&#xd7;10cc&#xb7;cm/cm&#xb7;sec&#xb7;atm of gas permeability or lower, and electric property of 10&#xd7;10&#x3a9;&#xb7;cm of the volume resistance or lower even if the content of resin is decreased to as low as 10 to 24 wt. %.

Separator for a fuel cell and manufacturing method of the separator

A method of producing a spiral wound gasket for sealing fluid such as a liquid including water and oil, and a gaseous body including vapor and gas and a device for producing the spiral wound gasket. The tip portion of a hoop material is cut and raised thereby forming a checking stepped-portion. The checking stepped-portion is caught by a checking pawl, so as to wind the hoop material around a core drum. After winding the hoop material around the outer periphery of the core drum, at least once, the checking pawl is retracted from the outer periphery of the core drum, thereby separating the checking pawl from the checking stepped-portion. The spiral wound gasket produced by the present invention exhibits an excellent sealing property. Moreover, it also has an excellent durability.

Method of producing a spiral wound gasket and a device for producing the same

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Sanda, Japan

Shoji Kato