| 摘要 |
<p>The invention relates to a multi-layer, sound-absorbing lightweight component, in particular for motor vehicles. The object of the present invention is to create a sound-absorbing component for motor vehicles which is relatively light and at the same time has a high or even improved acoustic effectiveness compared to conventional components of this type. To achieve this object, a multi-layer component is proposed which has an air-permeable cover layer ( 17 ) and at least one air-permeable fleece layer ( 10 '') of thermoplastic fibres, the cover layer ( 17 ) being coupled to the fleece layer ( 10 '') in a sound-permissive manner. The component of the present invention is further characterized in that the fleece layer ( 10 '') has a thickness in a range of 2 to 7 mm for a weight per area unit in a range of 500 to 1,500 g/m<SUP>2 </SUP>and is not connected or is only partially connected to a surface area of less than 20% of its surface facing the cover layer ( 17 ).</p> |
