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US 8,262,967 B2Granted
Gasket molding system for membrane electrode assemblies
Assignee3M Innovative Properties Company
InventorDennis E. Ferguson
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Abstract
The present invention is a system for molding a gasket to a membrane electrode assembly. The system comprises a cavity defined at least in part by closable mold blocks, at least one injection gate for injecting gasket material into the cavity, a mount for retaining the membrane electrode assembly adjacent to the cavity, and a mold insert independently movable relative to the closable mold blocks for applying pressure to the membrane electrode assembly retained on the mount.
Claims6
A method for molding a gasket to a membrane electrode assembly having a perimeter edge, the method comprising:
- positioning the membrane electrode assembly between a first mold block a second mold block;
- closing the first mold block against the second mold block to define a cavity, wherein the perimeter edge of the membrane electrode assembly is disposed within the cavity;
- moving a mold insert to apply pressure around the lateral edges of the membrane electrode assembly;
- and
- injecting gasket material into the mold to form the gasket on the perimeter edge of the membrane electrode assembly.
2 more elements
Dependencies are inferred from the claim text.