Laminar structure for inner lining of e.g. body part of motor vehicle, has sound-absorbing layer resting behind surface layer, heavy layer completely or partially connected with absorbing layer, and spring layer attached to heavy layer

摘要

The structure (1) has a porous surface layer (3) and a sound-absorbing layer (4) provided with a specific gravity of 20 kilogram/meter cube to 120 kilogram/meter cube and resting behind the porous surface layer. A heavy layer (6) is completely or partially connected with the sound-absorbing layer, and a spring layer (7) is attached to the heavy layer. The spring layer exhibits a layer with a weight per unit area of 50 gram/meter square to 1000 gram/meter square and/or an air layer. The porous surface layer consists of Tuft velour, loop tuft, needle fleece or flock.