Method of producing adherent metallic film

Details Method of producing adherent metallic film Method of producing adherent metallic film

1985-07-22

1986-03-25

Page, Thurman K.

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Physical dimension specified

427 34, 427258, 427404, 427423, 428335, 428414, 428416, 4284258, 428448, 428450, 428451, 428461, 174 35MS, B32B 2700, B32B 904, B32B 1508, B05D 100

Patent

active

045783101

ABSTRACT:
A method of producing an adherent metallic film for a thermoplastic or thermoset polymeric substrate to provide radio frequency shielding of electromagnetic interference. The polymeric substrate is prepared for application of the metallic film by application of a primer. The primer is an organic-based coating having a dispersion of silica gel to enhance the microscopic surface area and improve adhesion. The silica gel has an average particle size of approximately 20 microns and forms 2-10% of the mixture by weight. A catalyst may be added to the primer to promote curing. The metallic film is preferably zinc and may be applied by either flame or arc spraying technique, or electroless plating of the primed surface.

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patent: 4522850 (1985-06-01), Leech
patent: 4544571 (1985-10-01), Miller

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