A multi-layered fiber reinforced thermoplastic sound absorbing panel
includes a porous fiber reinforced thermoplastic core layer having a
first surface and a second surface, and includes a thermoplastic material
and from about 20 weight percent to about 80 weight percent fibers, a tie
layer covering the second surface of the core layer and including a
thermoplastic material, and a barrier layer covering the tie layer. The
barrier layer includes a thermoplastic material having a melting
temperature higher than the melting temperature of the core layer
thermoplastic material. The tie layer bonds the barrier layer to the core
layer. The panel also includes a non-woven layer including a fabric
bonded to the barrier layer. The non-woven layer forms an outer surface
of the panel.