Patent ID: 7537818
Filing Date: 2009-05-26
Classification: B32B,B60N,B60R,D06N,Y10T

Abstract:
1. An acoustically absorptive multilayer article, comprising: a backing layer of thermoplastic material having opposite first and second sides and a plurality of fiber tufts that extend outwardly from the first side; a plurality of air channels formed in the backing layer that extend between the first and second sides of the backing layer and that terminate at respective apertures in the backing layer first and second sides; and a multilayer substrate of porous material comprising a distinct layer of fine fibrous material attached to a distinct layer of coarse fibrous material, wherein the layer of coarse fibrous material comprises fibers in an open, loose configuration; wherein the backing layer is bonded to the layer of coarse fibrous material with a thermoplastic material that encapsulates individual fibers of the layer of coarse fibrous material without extending between the individual fibers, and such that the layer of fine fibrous material is porous.