Abstract: An aircraft cabin panel for acoustic absorption in an interior space includes a core layer, a first cover layer and a second cover layer. The first cover layer includes a space-enclosing first surface, and the second cover layer is arranged opposite the first cover layer. The first cover layer is acoustically transparent, and the core layer includes a honeycomb core with a plurality of tubular or honeycomb-like cells that are open throughout the thickness of the honeycomb core. The honeycomb core on the face pointing towards the first cover layer extends parallel to the first cover layer so as to be continuously throughout, and on the face pointing towards the second cover layer comprises recesses which extend over several cells. Absorbers are accommodated in the recesses.

Abstract: The present invention concerns a composite plate (1) comprising a first cover layer (3), a second cover layer (5), and a core layer (7) arranged between the first and the second cover layers (3, 5) and having a plurality of cells (9) which are at least partially open towards the first cover layer (3) and which are separated from each other by walls as well as a method of draining such a composite plate (1). In order to provide such a composite plate (1) in which improved resistance to ingress of liquid or formation of liquid accumulations is guaranteed in a simple and continual fashion it is proposed that a draining layer (13) is provided in the first cover layer (3), wherein the cells (9) are at least partially covered by the draining layer (13).

Abstract: The invention pertains to a composite panel with a first cover layer, a second cover layer and a first core layer that is arranged between the first cover layer and the second cover layer and features a plurality of cells that are separated from one another by walls at least in certain areas, wherein the first cover layer features a draining layer. The inventive composite panel may be distinguished from a composite panel according to the state of the art in that a second core layer with a plurality of cells that are separated from one another by walls at least in certain areas is arranged between the first cover layer and the first core layer.