| 摘要 |
PURPOSE:To enable gas seal of side end part of carbon base easily by bringing a seal part covered with thermoplastic resin into contact with a side end part of gas transmissive carbon base, and jointing the seal member to the side end part with heat. CONSTITUTION:On a gas nontransmissive conductive board 6 a gas transmissive carbon base 14 having a narrower width than that of the board 6 and having a plurality of grooves 14a formed thereon is arranged. In this case a film made of thermoplastic resin 115 is interposed therebetween. Seal members 11 each having the same size with that of stepped parts 15, 15 are placed to be abutted on opposed side end faces of a gas transmissive carbon base 12, and thereafter the whole thereof is pressurized under a specified temperature. Then thermo plastic resin is partially melted together with the termoplastic film. By cooling them gradually, the base 14, the board 6 and the seal member 11 are integrated by the resin 11b. It is thus possible to easily gas seal the side ends of porous electrode or gas diffusion board. |
