METHOD FOR MOLDING SEPARATOR FOR FUEL CELL

摘要

PROBLEM TO BE SOLVED: To provide a method for molding a large quantity of separators with a uniform plate thickness which can be thin-walled and requires no fabrication using a resin material containing 80 wt% of a carbon filler which conventionally cannot be injection-molded or compression-molded, with the help of an injection-molding machine with high production efficiency.

SOLUTION: The method for molding the separator 50 for a fuel cell comprises the following steps: first, the mold closing operation of the movable half 26 of a mold is suspended when the movable half 26 reaches a position where the volume of a cavity 28 is larger than the volume of the separator 50 by a specified ratio (R1); the injection of a conducting molten resin 54 into the cavity 28 from an injection device is initiated; and the movable mold 26 is again closed to a cavity-side half 27 and clamped while continuing injection, when the cavity 28 is filled with the conducting molten resin 54 by a specified ratio (R2).

COPYRIGHT: (C)2004,JPO