A side wall for a motor vehicle has an inside shell made of steel plate and an outside covering connected with the inside shell. The motive device is configured to change an orientation of the housing in response to the receipt of the signal. Accordingly, if the weight of the permanent magnets is maintained at a constant value, a magnetic field can be strengthened even with a wide motor gap due to the diaphragm, as compared to an example where there is no gap between the permanent magnets. The invention is characterised in that at least one second group of at least one processing station is not linearly arranged behind the first group in the horizontal plane in the processing direction of the bags. ; and carbonizing the resulting product by heating it to a temperature of 500-3000\xb0 C. A second electrode is formed over the light-emitting layer.