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AssigneeRieter Automotive (International) AG
InventorsClaude Buisson, Jean Casuli, Virginie Auger, Igor Bessin
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The invention provides a lightweight vehicle flooring assembly, wherein a carrier layer (1) has a layered structure. This structure comprises a honeycomb-like core layer (7) which can be made of a suitably impregnated cardboard material and which is connected on both sides to a stiffening layer (8, 9). The inner stiffening layer (8) is made of an SMC-material, whilst the outer stiffening layer (9) is made of a needled, preferably open-celled or porous nonwoven, also suitably impregnated against humidity and dirt. The structure of the carrier layer (1) and, in particular, the sequence of the layers: skin, honeycomb structure, nonwoven is of particular significance for the mechanical stability of the carrier layer (1). The carrier layer (1) is provided with an inner and an outer lining, the inner lining comprising a PU-foam spring layer (10) and a rubber or latex mass layer (11). These inner and outer linings, by choice of suitable materials and configurations, can provide acoustically absorbent insulation systems for the vehicle flooring assembly.
Vehicle floor assembly having a carrier layer (1), which is provided with an inner lining and an outer lining, wherein the carrier layer (1) comprises a honeycomb-like core layer (7), which is connected on both sides with a stiffening layer (8, 9), whereby the outer stiffening layer (9) is open-pored.
Vehicle floor assembly according to one of the previous claims, wherein the core layer (7) is made of a duroplastic material.
Vehicle floor assembly according to one of the previous claims, wherein the core layer (7) is made of a cardboard-like material.
Vehicle floor assembly according to one of the previous claims, wherein the core layer (7) has a thickness of about 15 to 30 mm, in particular 22 mm, a cell size of about 5 to 15 mm, in particular 10 mm, a compression resistance of about 450 to 1000 kPa, in particular 700 kPa, and an area weight of about 500-1100 g/m2, in particular 800 g/m2.
Vehicle floor assembly according to one of the previous claims, wherein the core layer (7) is impregnated with a Resol-solution.
Vehicle floor assembly according to one of the previous claims, wherein the stiffening layer (9) is made of a needled nonwoven, and in particular comprises glass or PET fibers which are bonded in particular with Resol.
Vehicle floor assembly according to one of the previous claims, wherein said assembly is at least partially arranged in a Ω-form.
Vehicle floor assembly according to one of the previous claims and designed as cabin flooring, in particular for trucks.
Vehicle comprising a vehicle floor assembly according to one of the previous claims.
Dependencies are inferred from the claim text.