Components for the manufacture of polymer electrolyte membrane fuel cells
are provided, as well as apparatus and automatable methods for their
manufacture by rotary die cutting and by lamination of various layers to
form membrane electrode assemblies. A method and apparatus for performing
the method are provided for making a membrane electrode assembly
comprising the steps of providing a web of polymer electrolyte membrane
material and a laminating station, where the web of polymer electrolyte
membrane material is drawn between a pair of laminating rollers in the
laminating station which form a laminating nip; die-cutting a first and
second web of catalyst decal materials or electrode materials to make
first and second workpieces at first and second rotary die stations;
which typically have a shape other than a four-sided parallelogram;
holding the die-cut workpieces by action of sub-ambient air pressure to
an endless perforated belt of first and second vacuum conveyors,
typically before they are fully cut from the first and second webs;
transporting first and second workpieces to opposing sides of the
membrane in the laminating station; concurrently feeding the first and
second workpieces into the laminating nip adjacent to the membrane,
typically before they are fully released by the first and second vacuum
conveyors; and laminating the first and second workpieces to the
membrane, advantageously in accurate registration.