| 摘要 |
PROBLEM TO BE SOLVED: To provide separator for fuel cell having sufficient electrical conductivity and strength, and easily manufacture the separator at a low cost. SOLUTION: This separator 30 is formed of a core layer part 32 made of a resin having a little carbon content, and an outer layer part 34 made of a resin having a large carbon content and formed so as to cover the outer surface of the core layer part 32. The separator 30 can secure high electrical conductivity at the outer layer part 34 having a large carbon content, and physical strength at the core layer part 32 having a little carbon content. The separator 30 is formed by the double-layer forming technology for injection molding with the resin having a little carbon content first, and thereafter, opening a die a little, and injection molding with the resin having a large carbon content. A boundary between the two resins is unified with each other by compatibility. |
