The present invention concerns an automotive protective mat (1), also known as throw in mat or protective mat. This mat comprises a microporous stiffening layer (2) (acoustical membrane). This layer may be composed of several sheets. The overall air flow resistance is between 500 Ns/m3-4000 Ns/m3. I
The present invention concerns an automotive protective mat (1), also known as throw in mat or protective mat. This mat comprises a microporous stiffening layer (2) (acoustical membrane). This layer may be composed of several sheets. The overall air flow resistance is between 500 Ns/m3-4000 Ns/m3. It is essential for this mat (1 ) that it is hydrophobic. In order to achieve an enhanced acoustical effectiveness a decoupling layer (6) is foreseen between the microporous stiffening layer (2) and the vehicle floor (8). This decoupling layer might be incorporated in the mat (1) or constituted by the underlaying carpet or sound absorber of the vehicle floor. Further layers or sheets such as adhesive layers, non skid layers, face fabrics or carpets and/or loft layers can be added to the claimed mat.
대표청구항▼
What is claimed is: 1. Sound absorptive protective mat for use with a conventional motor vehicle flooring, in particular a multilayered assembly package comprising a microporous stiffening layer, which protective mat comprises a hydrophobic and air flow resistant layer having a total air flow resis
What is claimed is: 1. Sound absorptive protective mat for use with a conventional motor vehicle flooring, in particular a multilayered assembly package comprising a microporous stiffening layer, which protective mat comprises a hydrophobic and air flow resistant layer having a total air flow resistance of 500 Ns/m3 to 4000 Ns/m3, whereby, in the assembled state of the protective mat, with a motor vehicle flooring interacting means functioning as a decoupler, an air gap is generated between the protective mat and the motor vehicle flooring. 2. Sound absorptive protective mat according to claim 1 wherein the air flow resistant layer is a microporous layer with a bending stiffness of B=0.05 Nm to B=10.5 Nm. 3. Sound absorptive protective mat according to claim 1, wherein the protective mat comprises a decoupler as interacting means. 4. Sound absorptive protective mat according to claim 2, further comprising a loft layer selected from the group consisting of a diecut needled felt, a diecut thermoplastic felt, a diecut non-hexa resinated felt, a molded thermoplastic felt, a cast foam, and a diecut slab foam. 5. Sound absorptive protective mat according to claim 4, wherein the layers are bonded to each other by an air permeable adhesive layer. 6. Sound absorptive protective mat in combination with a conventional motor vehicle flooring, in particular a multilayered assembly package comprising a microporous stiffening layer, which protective mat comprises a hydrophobic and air flow resistant layer having a total air flow resistance of 500 Ns/m3 to 4000 Ns/m3, whereby interacting means functioning as a decoupler generating an air gap are provided between the protective mat and the flooring. 7. Sound absorptive protective mat according to claim 6 wherein the air flow resistant layer is a microporous layer with a bending stiffness of B=0.05 Nm to B=10.5 Nm. 8. Sound absorptive protective mat according to claim 7, further comprising a face fabric or carpet. 9. Sound absorptive protective mat according to claim 7, further comprising a loft layer selected from the group consisting of a diecut needled felt, a diecut thermoplastic felt, a diecut non-hexa resinated felt, a molded thermoplastic felt, a cast foam, and a diecut slab foam. 10. Sound absorptive protective mat according to claim 9, wherein the layers are bonded to each other by an air permeable adhesive layer. 11. Sound absorptive protective mat according to claim 3, wherein the layers are bonded to each other by an air permeable adhesive layer. 12. Sound absorptive protective mat according to claim 2, wherein the layers are bonded to each other by an air permeable adhesive layer. 13. Sound absorptive protective mat according to claim 1, wherein the layers are bonded to each other by an air permeable adhesive layer. 14. Sound absorptive protective mat according to claim 8, wherein the layers are bonded to each other by an air permeable adhesive layer. 15. Sound absorptive protective mat according to claim 7, wherein the layers are bonded to each other by an air permeable adhesive layer. 16. Sound absorptive protective mat according to claim 6, wherein the layers are bonded to each other by an air permeable adhesive layer. 17. Sound absorptive protective mat according to claim 1, wherein the hydrophobic and air flow resistant layer has a total air flow resistance of between 500 Ns/m3 to 2000 Ns/m3. 18. Sound absorptive protective mat according to claim 6, wherein the hydrophobic and air flow resistant layer has a total air flow resistance of between 500 Ns/m3 to 2000 Ns/m3.
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