A sound insulation material 1 includes a first layer 10 constituted by a polyurethane foam, a second layer 20 that is laminated on a surface of the first layer, the surface being located on a first side, and that is constituted by a sheet-shaped member made from a material other than polyurethane, and a third layer 30 that is laminated on a surface of the second layer, the surface being located on the first side, that is constituted by a polyurethane foam, and that, over its entirety, has a higher density than the density of at least a portion of the first layer.
SOUNDPROOF MATERIAL AND SOUNDPROOF MATERIAL PRODUCTION METHOD
SCHALLSCHUTZMATERIAL UND VERFAHREN ZUR HERSTELLUNG DES SCHALLSCHUTZMATERIALS
MATÉRIAU D'INSONORISATION ET PROCÉDÉ DE PRODUCTION DE MATÉRIAU D'INSONORISATION
17.08.2022
Patent
Elektronische Ressource
Englisch
IPC: | B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES |
SOUNDPROOF MATERIAL AND SOUNDPROOF MATERIAL PRODUCTION METHOD
Europäisches Patentamt | 2020
|SOUNDPROOF MATERIAL AND SOUNDPROOF MATERIAL PRODUCTION METHOD
Europäisches Patentamt | 2021
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