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
2022-08-17
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 | 2021
|SOUNDPROOF MATERIAL AND SOUNDPROOF MATERIAL PRODUCTION METHOD
Europäisches Patentamt | 2020
|