The invention relates to a sound insulation panel (1) comprising a porous shell (2) and a spring layer (5), part of which enters said shell that is thus provided in the opposite direction of an integrated sealed barrier (6), the foam of said shell is an integral skinned foam such that said shell has a core (7) with a substantially homogenous density and a porous skin (8), the overall density of said shell being between 150 and 350 kg/m3, said skin being between 0.3 and 2 mm thick and having permeability such that a 2 mm thick (11) foam strip (9) cut into said shell and integrating said skin exhibits air flow resistance of between 250 and 2000 N.s.m<-3>.
本发明涉及一种隔音板(2),包括多孔壳(2)和弹力层(5),所述弹力层的一部分进入所述多孔壳,使得使所述多孔壳在其背面具有集成的密封屏障(6),所述多孔壳的泡沫是表皮式泡沫,使所述多孔壳具有密度大致均匀的芯(7)和多孔表皮(8),所述多孔壳的整体密度在150至350kg/m3之间,所述多孔表皮具有在0.3到2mm之间的厚度以及具有使得在所述多孔壳中切割的并组成所述多孔表皮的2mm厚度(11)的泡沫条(9)具有250至2000N.s.m‑3之间的空气流动阻力的渗透性。
SOUND INSULATION PANEL FOR A MOTOR VEHICLE ENGINE COMPARTMENT
用于机动车发动机舱的隔音板
2021-05-14
Patent
Electronic Resource
Chinese
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