Sound insulating underfloor cladding for motor vehicles has plastic hollow body whose underside is formed to reduce air resistance and/or essentially smooth with soft wall region and at least one relatively hard wall region

摘要

The arrangement has a plastic hollow body whose underside is formed to reduce air resistance and/or essentially smooth. The hollow body has at least one soft wall region (4.1) on its underside and at least one relatively hard wall region (4.2) produced by sequential extrusion and/or sequential coextrusion. The relatively soft region is closer to the vehicle wheel than the relatively hard region.