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Airtech

Dashboards for Audi and VW made from Celstran

01 October 2007

In the newly designed dashboards for the VW Golf, VWEOS and the Audi A 5 Coupe, automotive manufacturers are relying on stylish design with Celstran.

Ticona says that the property profile of Celstran long-fibre-reinforced thermoplastics (LFT) allows easy processing with accurate reproduction of design detail. At the same time, important components such as the passenger airbag can be fully integrated into the dashboard structure.

For a long time now, the interior aesthetics of a new car have been just as important as car body design and engine performance. When it comes to dashboards, in particular, car drivers value an attractive appearance with clear instrument layout. Car manufacturers and their suppliers additionally require easy processing and efficient production. To meet all these needs, they are now able to exploit the balanced material properties of Celstran long-glass-fibre-reinforced grades, in which polypropylene, PP copolymer or PP blends are used as the matrix material. The level of long-glass-fibre reinforcement can be suitably adjusted to component requirements within a certain range.

For system suppliers such as Faurecia and Cadence Innovation, the strength and impact resistance of this large component are key criteria. In producing the component, it is therefore important to ensure that the material has the best possible flow properties, despite the reinforcing fibres, so that complicated molds can be filled to the last corner within reasonable cycle times. During this process, the fibres must also be uniformly distributed. Only in this way can the stability of the dashboard support be retained, even with complex geometries.

Ticona says that their material also offers the advantage that ventilation ducts or nozzles – for example with a lower fibre content than the foamed dashboard support – can be readily integrated, so reducing production costs. A crucial factor for the finished dashboard is the smooth surface achieved with Celstran, due to the homogeneous glass fibre distribution in the polymer matrix. This allows a fine polyurethane (PU) foam to be applied, creating a soft-touch effect. Finally, a slush skin, usually of PVC, is applied onto the foam surface to give the dashboard its special visual appeal.






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