Patent ID: 9613609
Date: 2017-04-04
CPC Classifications: B32B,E04B,G10K

Claim:
1. A sound-absorbing panel comprising: a padding layer comprising heat-bonded synthetic fibers, wherein said padding layer comprises: wherein said panel is made of said padding layer with no further layers of a different material between said first outer surface and said second outer surface, wherein said padding layer in at least one portion (P) of panel has a variable density in a direction transverse to the first and second outer surfaces, said density being higher in proximity of said first and second outer surfaces thereof and being lower in proximity of its innermost layer; wherein said padding layer is configured to comprise an edge with a second thickness which is smaller than the first thickness, the edge extending along an entire perimeter of said panel; wherein said panel has a transition thickness between said first thickness and said second thickness; and wherein said transition thickness increases with a continuously increasing progression from the second thickness to the first thickness upon an increase in the distance from the edge, so that the panel is outwardly convex in the transition from the second thickness to the first thickness.