Patent ID: 8377553
Filing Date: 2013-02-19
Classification: B32B,F16F,Y10T

Abstract:
1. A constrained layer damper, comprising: a constraining layer; a carrier layer having opposite first and second surfaces, the carrier layer comprising metal ferrite filler and an elastomeric polymer in a weight ratio range of about 1:1 to about 9:1 of the metal ferrite filler relative to the elastomeric polymer; a removable release liner; a viscoelastic layer interposed between the constraining layer and the first surface of the carrier layer; and a silicone pressure-sensitive adhesive interposed between the release liner and the second surface of the carrier layer, the silicone pressure-sensitive adhesive possessing sufficient tackiness at room temperature to adhere the constrained layer damper, with the release liner removed, to a substrate, the constrained layer damper having a peak damping temperature value in a range of about 50° C. to about 100° C., wherein the carrier layer is non-viscous at the peak damping temperature, and wherein the metal ferrite filler comprises ferrite powder, and wherein the carrier layer comprises about 88 to about 92 weight percent of the ferrite powder and about 7 to about 11 weight percent of the elastomeric polymer.