Patent ID: 7393575
Filing Date: 2008-07-01
Classification: B32B,Y10T

Abstract:
1. A damper component for absorbing and dissipating vibration and/or noise resonating from a device, the damper component comprising: a fragmented damper layer having opposite surfaces and edges and comprising a plurality of fragments that are noncontinuous with each other to provide interstices between the noncontinuous fragments, the fragmented damper layer comprising a viscoelastomer; and a continuous constraining layer contacting the opposite surfaces and the edges of the fragmented damper layer to completely encase the fragmented damper layer and fill the interstices between the noncontinuous fragments, the constraining layer having a greater stiffness and higher modulus of dynamic shearing elasticity than the fragmented damper layer, the constraining layer comprising a molded polyester sheet molding compound that is substantially immiscible with the viscoelastomer to provide discrete interfaces between the constraining layer and the noncontinuous fragments.