Method of making dual elastomer gasket shield for electromagneti

Details Method of making dual elastomer gasket shield for electromagneti Method of making dual elastomer gasket shield for electromagneti

1990-10-15

1992-08-25

Lusignan, Michael

Coating processes

Electrical product produced

427380, 427387, 4273935, B05D 512

Patent

active

051417707

ABSTRACT:
A gasket shield for counteracting electromagnetic interference is provided with a thin, elastomeric outer layer encapsulating a thicker, elastomeric inner layer as a flexible gasket, the outer layer constituting a metal-filled-elastomer exhibiting high conductivity and excellent attenuation of electrical energy. The thin outer layer is deposited by coating from solution such as by slot-head coating, dip-coating, gravure roll coating, spray coating or knife coating. In this way a thinner and more uniform outer layer can be provided than is achievable by co-extrusion, thereby providing a greater consistency and reduced costs, as well as a greater degree of metal-filling per unit volume of rubber matrix.

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Crosby, E. G. and Nuccio, C., "Conductive Seal for Electromagnetic Shielding in Electrical Enclosure"; IBM Technical Disclosure Bulletin, vol. 20, No. 1, Jun. 1977, pp. 282-283.
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