NOVELTY - Formation of bipolar plate for fuel cell, comprises laser machining a continuous web of a polymer/conductive polymer additive composite to form first flow channels on a surface of composite web, where the polymer/conductive polymer additive composite comprises first and second surfaces, and where the first flow channels are formed into the first surface.    USE - For forming a bipolar plate for a fuel cell (claimed), which is an electrochemical device, for converting energy stored in fuels such as hydrogen, oxygen, and methanol into electricity without combustion of the fuel.    ADVANTAGE - The final bipolar plates can be laminated to an adhesive film to enable high volume manufacturing of fuel cell stacks, e.g. the adhesive film can allow automated process equipment to easily attach the bipolar plates to a electrode assembly, which can facilitate the formation of fuel cell stacks. The bipolar plates/adhesive combination can be supplied on a reel attached to a manufacturing line, which permits the plate/adhesive combination to be peeled off of a backing layer and positioned in a fuel cell stack. Additionally, the plates can be provided in a roll configuration with perforations formed between adjacent plates, which can facilitate easy tearing off of individual bipolar plates from the roll such that the roll configuration can be used in automated fuel cell manufacturing operations.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (A) a method of forming a composite structure for fuel cell, comprising extruding composite layers, each comprising a conductive additive and a polymeric binder; forming reactant flow channels on the surface of composite layers; combining composite layers to form a multi-layer bipolar plate; extruding a membrane electrode assembly comprising an anode, a cathode and a separator between the anode and the cathode; and combining the multi-layer bipolar plate and the membrane electrode assembly to form a membrane electrode assembly/bipolar plate composite; and    (B) a method for forming shaped articles, comprising extruding a composite web having a first surface and a second surface, the composite web comprising polymer and at least one electrically conductive additive; and laser machining the composite web such that desired shaped is formed into at least one surface of the composite web.    DESCRIPTION OF DRAWING(S) - The figure is a schematic diagram of a process line comprising and extruder and a shaping station.    Extruder (102)    Extruder die (103)    Cooling station (104)    Surface treatment station (108)    Additive feed (112)    Regrind loop (116)