Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1994-07-29
1996-09-03
Ryan, Patrick J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428324, 428327, 428332, 428412, 428413, 4284258, 428458, B32B 900
Patent
active
055522092
ABSTRACT:
The present invention provides a method of improving the vibrational damping characteristics of a circuit article. The method involves adding damping layer(s) to the laminate material that is processed into a circuit article. The damping material effectively increases the damping of the circuit article and reduces the amplitude of resonant frequencies of the circuit article excited by environmental vibrations or shocks that the circuit board may encounter in use and thereby potentially improving the performance of the circuit article for vibration and shock related performance issues without the addition of add-on dampers to the circuit articles surface or by isolating the circuit board by means of vibration and shock isolators.
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Dowdall Janice L.
Griswold Gary L.
Kirn Walter N.
Lee Cathy
Minnesota Mining and Manufacturing Company
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