Adler Pelzer Holding Gmbh

Hp Pelzer Holding Gmbh

Clion Ireland Holding Ltd.

Marco Schneider

Norbert Nicolai

Volkmar Schulze

Rod Morris-Kirby

Reimund Piatkowski

Volker Kursch

Hans-Peter Keller

Colm Doris

Ctirad Zikmund

Dirk Jaeger

Edmund Sumann

Olaf Dohring

Herbert Vollmert

Uwe Kaiser

Olaf DÖHRING

Dirk JÄGER

Franz Czep

The present invention includes a multi-layer acoustic and/or reinforcing non-woven fabric.

Multi-layer acoustic and/or reinforcing nonwoven fabric

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 invention relates to a broadband sound absorber () which comprises a sound-absorbing filler material between two microperforated film webs () which are contiguous on their edges, said filler material optionally containing heavy fillers. The broadband sound absorber () achieves excellent acoustic insulation and has microperforations () all over or only in sections, said filler material optionally containing heavy fillers (mass density) and one or both microperforated film webs () having the same thickness across their surface or thickened portions () of the same or a different material in some sections.

Broadband 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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Essen, Germany

Marco Schneider