foam 5 to be applied subsequently to this end a predeterminable amount of the flexible foam material which after foaming yields a pu semi rigid foam with a specific weight between 0 11 and 0 18 g cm 3 is applied to the back side 2 a of the outer covering 2 which is put into a lower mold 6 and has previously been produced as a deep drawn part from polyvinyl chloride pvc possibly by using the illustrated lower mold 6 and which is provided on its surface 2 b with a decoration and or a relief subsequently the upper mold 7 including the mounted shaped part 4 that has been produced by deep drawing from an abs plastic material with an initial thickness adapted to the mechanical properties required and the lower mold 6 are joined while the flexible foam 3 is foaming and still deformable at a temperature of the lower and upper molds 6 7 of e g about 45 u00b0 c and a suitable flexible foam material the foaming process starts and thus the increase in volume of the flexible foam material after about 10 to 12 seconds after application to the outer covering 2 lower and upper molds 6 7 remain closed until the complete hardening of the flexible foam 3.