Patent ID: 8097194
Filing Date: 2012-01-17
Classification: B32B,Y10T

Abstract:
1. A method for making a damper component for absorbing and dissipating vibration and/or noise resonation, said method comprising: providing a laminate comprising a damper layer and an adjacent melt-flowable, curable sheet molding compound, the damper layer comprising a viscoelastomer; and heating the laminate in a mold under pressure and sufficient internal material flow and mixing action to shear the damper layer into a fragmented damper layer and cure the sheet molding compound into a continuous thermoset constraining layer that intimately contacts and encases the fragmented damper layer, the fragmented damper layer comprising a plurality of fragments that are non-continuous with one another, the continuous thermoset constraining layer having a greater stiffness and higher modulus of dynamic shearing elasticity than the fragmented damper layer, the continuous thermoset constraining layer comprising a cured polyester sheet molding compound that is substantially immiscible with the viscoelastomer to provide a discrete interface between the continuous thermoset constraining layer and the fragmented damper layer.