A motor vehicle soundproofing part includes a base body made from foam or felt and a surface layer, applied on the base body. The base body has shaping reliefs and the surface layer includes a plurality of through perforations and airtight regions between the perforations. Each perforation has a transverse dimension smaller than 1.5 mm, advantageously smaller than 1 mm and, in particular, between 0.1 mm and 0.5 mm.
PIÈCE D'INSONORISATION DE VÉHICULE AUTOMOBILE ET PROCÉDÉ DE FABRICATION ASSOCIÉ
SOUNDPROOFING PART OF A MOTOR VEHICLE AND ASSOCIATED MANUFACTURING METHOD
SCHALLDÄMMELEMENT FÜR KRAFTFAHRZEUG, UND ENTSPRECHENDES HERSTELLUNGSVERFAHREN
2020-12-02
Patent
Electronic Resource
French
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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