Abstract: A floor covering characterized as having a strong noise-reducing properties for the interior trim of means of transport. The floor covering has, on the passenger side, a textile or non-textile surface, acoustically coupled through at least one microperforated sheet to a fibrous non-woven and/or foamed plastic. A microperforated sheet having a hole diameter from 0.2 to 0.5 mm and an interhole distance from 3 to 7 mm.

Abstract: The invention relates to a method for producing mass absorber systems, sound insulations having a great thermostable, noise-reducing effect, especially for the engine compartment of motor vehicles. Disclosed is a method for the direct backfoaming of absorber systems, the absorber of which comprises a foam layer (2) or fleece layer (4) with a one-sided or double-sided covering layer (3). Said method is characterized by the fact that the mass side of an absorber having a very low density is provided with a foam-impermeable covering layer (3), the absorber is placed in the foaming tool, and a certain pressure is generated in the absorber via the side located opposite the mass inside the closed foaming tool before the foaming process is triggered.

Abstract: The present invention relates to a floor covering with a strong noise-reducing effect for the interior trim of means of transport.