Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1991-05-21
1992-06-23
Lesmes, George F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428284, 428286, 428287, 428296, 428297, 428457, 428545, B32B 1500, B32B 1700, B32B 1504, D04H 104
Patent
active
051241986
ABSTRACT:
The present invention provides a metal/polymer composite comprising a polymeric substrate and a sintered mat of randomly-oriented metal fibers embedded therein, the fibers having a substantially circular cross-section and a diameter of about 10 to 200 .mu.m. The polymeric substrate is typically a thin, flexible sheet-like material having a pair of planar surfaces. The polymeric substrate is preferably thermoformable. If thermoformability is desired the metal will have a melting point of less than the thermoforming temperature of the polymeric substrate. The thermoformable metal/polymer composite of the present invention may be stretched to at least 20%, and often can be stretched at least 200% of its original dimensions, at least in certain regions, without loss of electrical continuity or EMI shielding properties. The present invention also provides a method of making a metal/polymer composite and a sintered mat of randomly-oriented metal fibers.
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Calhoun Clyde D.
Koskenmaki David C.
Lambert, Jr. Robert L.
Tucker Pamela S.
Griswold Gary L.
Kirn Walter N.
Lesmes George F.
Minnesota Mining and Manufacturing Company
Neaveill Darla P.
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