Ford Investigating Mouldable Wood-Plastic Compound for Greater Recyclability and Lower CO2 Balance

31 July 2009

Ford researchers at Ford’s European Research Centre in Aachen, Germany are investigating an innovative, new wood-plastic compound (WPC—also known as liquid wood. The new liquid wood material is derived from a rubber compounding process. The new material is being assessed in a three-year project which started in May 2009.

Until now, liquid wood has only been used for high-quality household terrace building panels which do not have to be moulded. This is important because its viscosity impairs mouldability. With a high portion of wood (between 60 and 80 percent), this viscosity made it unsuitable for conventional injection moulding, which is the only economical manufacturing process for the mass production of components such as plastic parts. This is one of the most prominent issues being addressed by the assessment project.

The compound of wood and plastics prevents water absorption and thus increases the material’s durability. The fact that untreated wood, and even wood waste, can be used makes the application environmentally attractive.

The new processing technology also significantly improves the sealing of the wood fibers and insulates unpleasant odors. Therefore, the material can also be used in the vehicle interior, for example with trim parts. Another area where liquid wood application could be used is in the engine compartment, with components such as the battery tray.

Previous analyses have shown that the recyclability of liquid wood is excellent because the material can be reprocessed up to five times; the overall CO2 balance is almost neutral.

Ford’s objective is to further increase the portion of natural materials in the development of new models. Currently, some 290 parts are already derived from renewable resources, such as from cotton, wood, flax, hemp, jute fibre and natural rubber.

Among the project partners are the University of Paderborn, machine and material manufacturers and organizations in the compounding and packaging industry. The State of North Rhine Westphalia provides a funding of approximately €400,000 (US$563,000) out of the total overall budget of more than €1 million (US$1.4 million).