a shaped article having emi shielding properties , having been shaped by thermoforming of a planar sheet , and having a shape requiring the planar sheet to exhibit a stretch ratio of at least about 300 %, and up to about 500 %. the article consists essentially of a fibrous metal mat substantially surrounded by a fiber - coat and a polymeric carrier for support of the mat . the fiber mat may also be embedded into the carrier material . the fiber - coat may be sprayed onto the mat or , as a thermoplastic material , may be forced together with the metal fiber mat to surround it , and such procedure may take place before or after attachment to the carrier material .