Patent ID: 6764624
Filing Date: 2004-07-20
Classification: B29C,B29K,H01M,Y02E,Y02P

Abstract:
A method of producing a fuel cell separator, comprising the steps of:producing dry granules of a composition for a fuel cell separator mainly containing a conductive material, a binder, and an additive by mixing raw materials including at least said conductive material, said binder, and said additive, granulating the resultant mixture to obtain granules, and drying the granules; and packing said dry granules in a mold, and hot-press molding said dry granules packed in the mold; wherein a residual volatile matter content of said dry granules is in a range of 4 wt % or less; an average particle size of said dry granules is in a range of 200 to 700 &mgr;m; and a particle size distribution of said dry granules is as follows: particle sizepercentageâ€ƒ5 &mgr;m or more and less than 100 &mgr;mâ€‚5 to 30%100 &mgr;m or more and less than 300 &mgr;m10 to 40%300 &mgr;m or more and less than 500 &mgr;m10 to 50%500 &mgr;m or more and less than 1000 &mgr;mbalance