Plastics are important materials for industrial and consumer applications. With a low density they are a perfect choice for weight reduction and lower fuel consumptions in automotive vehicles and aircraft. Also the possibilities for design and shape are enormous with plastic materials. But there are also disadvantages about it. Most plastic subtrates have a low resistance to the impacts of weather. Air humidity, variation of temperatures and climatic factors like UV radiation, oxygen and pollutants lead to fast weathering and therefore loss of appearance and stability. Over the last 20 years, it has become common practive to apply coatings on ...