Method of production of channel member for fuel cell
A method of production of a channel member for fuel cell use comprising a step of obtaining a sheet-shaped first conductor part 11 containing a carbon material of at least one of carbon nanotubes, granular graphite, and carbon fibers and a first resin, a step of laying a sheet-shaped second conductor part 21 containing a carbon material and a second resin with a lower melting point than the first resin to form a sheet-shaped base part 13 , a step of transferring a grooved surface 51 to a surface to form a grooved base part 16 provided with groove part 15 , a step of laying a sheet-shaped third conductor part 31 containing a carbon material and a third resin with a lower melting point than the first resin, and a step of integrally joining the grooved base part and the third conductor part by hot melt bonding to cover the groove parts.
1. A method of production of a channel member for fuel cell use comprising:
a step of obtaining a sheet-shaped first conductor part containing a first resin and a carbon material,
a step of laying a sheet-shaped second conductor part containing a second resin with a lower melting point than said first resin and a carbon material on at least one surface of said first conductor part to form a sheet-shaped base part,
a step of transferring a grooved surface to a surface of said base part to form a grooved base part provided with groove parts,
a step of laying a sheet-shaped third conductor part containing a third resin with a lower melting point than said first resin and a carbon material on the surface of said grooved base part where said groove parts are formed, and
a step of integrally joining said grooved base part, and said third conductor part by hot melt bonding to cover said groove parts.
2. The method of production of a channel member for fuel cell use according to claim 1 wherein said groove parts are provided at the surface of said grooved base part where said second conductor part is laid.
3. The method of production of a channel member for fuel cell use according to claim 1 wherein said groove parts are provided at the two surfaces of said grooved base part.
4. The method of production of a channel member for fuel cell use according to claim 1 wherein said groove parts are provided at a surface of said grooved base part at the opposite side to the surface where said second conductor part is laid.
5. The method of production of a channel member for fuel cell use according to claim 1 wherein said groove parts are relief-shaped groove parts.
6. The method of production of a channel member for fuel cell use according to claim 5 wherein said relief-shaped groove parts are consecutive parallel structures of groove parts and ridge parts.
7. The method of production of a channel member for fuel cell use according to claim 5 wherein groove depths of said relief-shaped groove parts are 50 to 200 μm and groove widths of said relief-shaped groove pans are 100 to 400 μm.
8. The method of production of a channel member for fuel cell use according to claim 1 wherein said grooved base part is provided with a metal sheet.
9. The method of production of a channel member for fuel cell use according to claim 8 wherein said metal sheet is provided with an adhesive resin layer containing a carbon material.
10. The method of production of a channel member for fuel cell use according to claim 1 wherein said carbon material is at least one type of carbon nanotubes, granular graphite, or carbon fibers.
11. The method of production of a channel member for fuel cell use according to claim 9 wherein said carbon material is at least one type of carbon nanotubes, granular graphite, or carbon fibers.