Adler Pelzer Holding Gmbh

Hp Pelzer Holding Gmbh

Clion Ireland Holding Ltd.

Rod Morris-Kirby

Norbert Nicolai

Marco Schneider

Volkmar Schulze

Reimund Piatkowski

Hans-Peter Keller

Colm Doris

Uwe Kaiser

Olaf Dohring

Olaf DÖHRING

The invention relates to an acoustic component contoured in a planar manner or three-dimensionally shaped, namely a firewall of a motor vehicle, and use of said component, said component comprising at least one sound-absorbing material and possibly at least one carrier material, wherein the sound-absorbing material is completely or partially covered by a flow layer at least on a planar side or in a composite of layers, wherein the flow layer has nanofibers.

Firewall

The invention concerns a multilayered perforated sound absorber () with a microperforated plastics film () and a thermally deformable absorber () which is a foam layer, a fabric or a fibrous non-woven layer. The invention further concerns a method for producing a corresponding sound absorber.

Multilayered perforated sound absorber

The present invention relates to a sound absorber consisting of a first non-woven fabric facing towards the sound-emitting source having a layer thickness within a range of from 2 to 15 mm, a density within a range of from 50 to 500 kg/m, a weight per surface area within a range of from 0.1 to 2.5 kg/m, and a flow resistance within a range of from 50 to 1000 kNs/m, and a second non-woven fabric facing away from the sound-emitting source has a layer thickness within a range of from 10 to 28 mm, a density within a range of from 20 to 100 kg/m, a weight per surface area within a range of from 0.4 to 1 kg/m, and a flow resistance within a range of from 10 to 40 kNs/m.

Sound absorbers

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Padstow, United Kingdom

Rod Morris-Kirby