| 摘要 |
The invention relates to an acoustically active carpet shaped part (1') for motor vehicles, comprising: a textile air-permeable carpet layer (2, 3); a barrier layer (5), which is joined to the underside of the carpet layer while preventing the penetration of foam, and; a foam material back (6) foamed onto the barrier layer, this foam material back being formed by foam-laminating the barrier layer in a foaming tool. The invention also relates to a method for producing a carpet shaped part of the aforementioned type. In order to provide a carpet shaped part of this kind that, with a low weight and reduced costs, has a high airborne sound absorbing effect, the invention provides that instead of a sealing or heavy layer film, a fine-fibered needle-punched nonwoven or a needled felt is used as a barrier layer (5) for preventing a penetration of foam. This needle-punched nonwoven or needled felt is produced from synthetic fibers having a fineness of less than 6.7 dtex as well as from bicomponent hot-melt adhesive fibers and has a weight per unit area ranging from 600 to 900 g/m<sup |
