| 摘要 |
<p>The invention relates to a light multilayer sound absorbing component, in particular for motor vehicles. The aim of said invention is to create a sound-absorbing component for motor vehicles, which has a relatively low weight and good or improved, in comparison with current components, acoustic properties. For this purposes, the inventive component in embodied such that it is multilayer and comprises a covering air-permeable layer (17) and at least one air-permeable non-woven layer (10'') which is made of thermoplastic fibres and coupled with the covering layer (17) in a sound-conducting manner. Said component is characterised in that the non-woven layer (10'') has a thickness ranging from 2 to 7 mm for a grammage of 500-1500 g/m<2 >and is not or only partially connected to the covering layer (17) on at least 20 % of the surface thereof oriented towards said covering layer (17).</p> |
