An acoustic attenuation panel including: a main layer made of a porous material and having two opposite faces; a coating layer arranged on one of the two faces of the main layer; an adhesive film, arranged at the interface between the main layer and the coating layer to assemble same. The main layer is a body made of melamine resin foam having a density between 6 and 6.8 kg/m3 and a porosity rate between 0.978 and 0.984; the coating layer is a fabric with a density between 484 and 526 kg/m3 and a porosity rate between 0.771 and 0.817; the adhesive film is a film made of a thermoplastic material provided with holes passing through and having a surface density between 40 g/m2 and 56 g/m2.


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    Title :

    PANNEAU D'ATTÉNUATION ACOUSTIQUE AYANT DES PERFORMANCES AMÉLIORÉES DANS LES BASSES ET MOYENNES FRÉQUENCES


    Additional title:

    ACOUSTIC ATTENUATION PANEL WITH IMPROVED PERFORMANCE IN LOW AND MEDIUM FREQUENCIES
    SCHALLDÄMMPLATTE MIT VERBESSERTER LEISTUNG BEI NIEDRIGEN UND MITTLEREN FREQUENZEN


    Contributors:

    Publication date :

    2022-10-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    French


    Classification :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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    PANNEAU D'ATTÉNUATION ACOUSTIQUE AYANT DES PERFORMANCES AMÉLIORÉES DANS LES BASSES ET MOYENNES FRÉQUENCES

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