Patent ID: 8151933

Claim:
A thermally and acoustically insulative vehicle flooring system ( 100 ) comprising: a) a contact layer ( 200 ) having a contact layer thickness ( 210 ) and a contact layer density; b) a substrate layer ( 300 ) joined to the contact layer ( 200 ), wherein the substrate layer ( 300 ) includes a lightweight cellular engineering material and has a substrate layer thickness ( 310 ) and a substrate layer density; wherein the substrate layer ( 300 ) is rebonded foam; wherein (i) the thermal conductivity of the vehicle flooring system ( 100 ) is less than 0.0450 Watts per meter Kelvin (W/(m*K)); (ii) a ratio of the contact layer density to the substrate layer density is less than 40; and (iii) an SAE J1400 sound transmission loss profile for the vehicle flooring system ( 100 ) includes a sound transmission loss of at least 14 dB at 125 Hz, at least 18 dB at 250 Hz, at least 75 dB at 4000 Hz, and 78 dB at 6300 Hz.