| abstract |
A method for producing a lightweight, sound insulating covering ( 1, 1′, 1″, 1 ″′) for a body component of a motor vehicle, in particular a lightweight dashboard covering, wherein the covering ( 1, 1′, 1″, 1 ″′) is produced as a foamed, sound absorbing molded part in a single-stage operation by injecting a reactive mix, comprising polyol and isocyanate, into a cavity ( 11 ) of a foaming tool ( 9 ), wherein before and/or during the injecting, at least one predetermined surface portion ( 17 ), defining the cavity ( 11 ) of the foaming tool ( 9 ), is temperature-controlled in such a manner that the foamed molded part comprises an integral substantially pore free skin ( 1.1 ) with a thickness of at least 0.5 mm on one side, and comprises an open porous surface ( 1.2 ) and/or a thinner, sound permeable skin ( 1.4 ) on its side opposite to said skin ( 1.1 ). |