Exterior part in the front area

Objective

Due to the low need for cooling air supply in electric vehicles, front parts can now be completely closed. These closed fronts offer an excellent opportunity to integrate camera technology, radar sensors, and other sensors behind the surface without disturbing gaps. Our task was to coat a front-end component made of PC using the Two-in-One process (2in1) and our PURIFLOW® RIM system.

Challenge

• Ensuring good adhesion between the coating system and untreated polycarbonate
• High heat, weather, and media resistance of the coating system
• Radar and lidar permeability of the coating layer for the functionality of driver assistance systems
• Possibility to integrate heating foil for the use of assistance systems in winter

Solution

Our solution consists of our PURIFLOW® coating system PU992 with optimized adhesion properties and good radar and lidar permeability. This coating system is characterized by the following features:

• Optimal adhesion properties for reliable adhesion on untreated polycarbonate
• Good radar and lidar permeability to maintain the functionality of driver assistance systems
• Special UV and heat stabilizers to protect the polycarbonate substrate from weather influences
• Combination of Shore hardness and layer thickness ensures a robust surface that is resistant to stone chips and external influences
• Integration of a reflow healing effect in the coating system to protect against possible deformation scratches

Our coating solution thus provides a high-quality and functional surface. By combining optimized adhesion properties, radar and lidar permeability, as well as weather resistance and protection against external influences, the PURIFLOW® coating system meets the demanding requirements of modern vehicle technology. In addition, our PURIFLOW® coating system includes the reflow or self-healing effect, reducing the sensitivity of the front part to damage and allowing self-repair of the surface at room temperature within 24 hours or through five-minute warm air supply. The front part based on this case study can already be found on the roads today.