Multilayer board for acoustic insulation

Patent metadata

Field	Value
Publication number	US-8979014-B2
Application number	US-201113164441-A
Country	US
Kind code	B2
Filing date	Jun 20, 2011
Priority date	Dec 19, 2008
Publication date	Mar 17, 2015
Grant date	Mar 17, 2015

Abstract

To reduce sound emission and at the same time improve stability, a multilayer board for acoustic insulation is proposed that includes, but is not limited to a core sheet arranged between a first and a second covering layer. At least one of the two covering layers is of a closed design. The core sheet is firmly connected in a planar fashion to the covering layers. The core sheet comprises slits that extend within the core sheet in the direction of the core sheet thickness, which slits reduce the shear stiffness of the board and thus ensure an improved acoustic insulation effect. On both sides the core sheet comprises continuous edge zones, which extend parallel to the covering layers. An aircraft can have an interior lining formed by panels that comprise the multilayer boards in order to provide acoustic insulation.

First claim

What is claimed is:

1. A multilayer board for acoustic insulation for a panel lining an interior space, comprising
a core sheet comprising:
at least two core layers, with each core layer comprising:
a honeycomb structure in which a plurality of cells extend in a direction of a core sheet thickness, the plurality of cells are separated by cell walls;
slits in the cell walls that extend within the core layer along a longitudinal axis in the direction of the core sheet thicknes…

Assignees

• Boock Klaus
• Reimer Sven
• Hentschel Lars
• Airbus Operations Gmbh

Inventors

• Boock Klaus
• Reimer Sven
• Hentschel Lars

Classifications

• B32B3/12 Primary

  Operations & Transport · mapped topic

• Y02T50/46

  Cross-Sectional Technologies · mapped topic

• E04B2001/8461

  Fixed Constructions · mapped topic

• G10K11/172

  Physics · mapped topic

• B64C1/40

  Operations & Transport · mapped topic