초록 ▼

The structural element contains a first sound-absorbing and thermally insulating layer (21) and a second sound-insulating, dimensionally stable supporting layer (23). Preferably, the first layer consists of a thermoformed fibre mat or a foam which is at least partially open-cell, and the second laye

The structural element contains a first sound-absorbing and thermally insulating layer (21) and a second sound-insulating, dimensionally stable supporting layer (23). Preferably, the first layer consists of a thermoformed fibre mat or a foam which is at least partially open-cell, and the second layer consists of a rigid, thermoformed synthetic material, for example a plastic material reinforced with glass fibres. A porous or microporous decorative layer (22) can be applied to the outside of the first layer and a thermoformed carpet (24) can be applied to the outside of the supporting layer. A heat-sealable adhesive layer (27) can be placed between the two layers, the said adhesive layer incrasing the bond between the two layers. Because of the dimensionally stable supporting layer, the structural element can be used as a sound screen without a holding frame or as a sound-insulating bodywork part without a supporting surface, which makes it possible to reduce the weight of the overall construction and to make assembly simpler and cheaper.

대표청구항 ▼

A noise-reducing structural element, consisting essentially of a first layer being a noise-absorbing and thermally insulating layer selected from a group consisting of thermoformed fiber and a foam which is at least partially open-cell, and a second layer being a sound-insulating layer adjacent ther

A noise-reducing structural element, consisting essentially of a first layer being a noise-absorbing and thermally insulating layer selected from a group consisting of thermoformed fiber and a foam which is at least partially open-cell, and a second layer being a sound-insulating layer adjacent thereto and with a surface of one layer adjacent a surface of the other layer, the adjacent surfaces of the two layers being bonded to one another at least at spaced locations, said second layer comprising rigid, impermeable, thermoformed, synthetic, and self-supporting material, and said second layer supporting said first layer.