Rooflining of a vehicle and a method for producing same

B - Operations – Transporting – 60 – R

Patent

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Details

B60R 13/02 (2006.01) B32B 7/12 (2006.01) B60R 13/08 (2006.01)

Patent

CA 2393305

Summary The invention relates to a multifunctional, lightweight and acoustically optimized interior lining for the roof (A) of a vehicle. The inventive lining comprises an air permeable core layer (4), a first stiffening layer (2), a second stiffening layer (6) and a decor layer (8). Said layers are connected to one another by means of air permeable adhesive layers (3, 5, 7). The total air flow resistance of the layers (5, 6, 7, 8) arranged on the side of the core layer facing the passenger compartment is within the range of 500Nsm-3 > R t < 3500Nsm-3. The total surface area weight of said layers lies in the range of 300 to 800 gr/m2. The invention also relates to a method for producing said lining and the use thereof in a roof of a vehicle.

L'invention concerne un revêtement intérieur multifonctionnel, léger et optimisé acoustiquement pour un toit de véhicule automobile (A). Le revêtement selon l'invention comprend une couche centrale (4) perméable à l'air (4), une première couche de renfort (2), une deuxième couche de renfort (6) et une couche de décoration (8). Ces couches sont jointes entre elles à l'aide de couches adhésives (2, 5, 7) perméables à l'air. Les couches (5, 6, 7, 8) disposées sur la couche centrale du côté de l'habitacle présentent une résistance commune à l'écoulement d'air Rt comprise entre 500 Nsm<-3> et 3500 Nsm<-3> et une masse au mètre carré comprise entre 300 et 800 g/m<2>. L'invention concerne également un procédé pour la production de ce revêtement, ainsi que l'utilisation de ce revêtement pour un toit de véhicule automobile.

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