The invention discloses a silencing composite board used for an automobile. The silencing composite board comprises a sound insulation substrate, a sound absorption layer and a sound absorption panel layer are sequentially arranged on the surface of the sound insulation substrate from bottom to top, the surface of the sound absorption panel layer is coated with a fire-proof coating, the top face of the sound absorption layer is in a concave-convex saw tooth shape, and an adhesive coating is arranged on the bottom face of the sound insulation substrate. The silencing composite board is installed in an assembly gap of the automobile and has a good sound absorption and noise reduction effect; particularly, the top face of the sound absorption layer is in the concave-convex saw tooth shape, in this way, the sound absorption area of the sound absorption layer can be greatly increased, and the noise reduction effect is improved; meanwhile, the surface of the sound absorption panel layer is coated with the fire-proof coating, so that safety performance is improved; in addition, the adhesive coating is arranged on the bottom face of the sound insulation substrate, in this way, the silencing composite board can directly adhere to the automobile as long as a packaging film of the silencing composite board is disclosed, and installing is convenient.
Silencing composite board used for automobile
2015-08-19
Patent
Elektronische Ressource
Englisch
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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 |
Automobile stripe silencing sheet and preparation process
Europäisches Patentamt | 2021
|