Large roof bezel uses polycarbonate
Incorporating a large panoramic roof into a vehicle’s design is an inviting way for automakers to enhance the driving experience. Covestro polycarbonates provide excellent properties, including black glass appearance with high gloss surface for roof bezel applications
Automakers, such as Audi and Volkswagen, seek to bring the sensation of the open road to drivers and passengers, wanted to design a significantly larger sunroof than traditional offerings. Hence, they turned to Webasto AG and Covestro for a solution.
A Webasto AG sunroof – featuring a glass surface twice as large as a traditional sunroof – utilizes Makrolon® 2605 black polycarbonate to enclose the glass in a one-piece, U-shaped panel.
With a deep, black gloss effect and a glass-like, scratch-proof surface, the polycarbonate panel effectively makes the glass surface appear larger, while hiding the bodywork structure.
The part is produced using injection-compression molding – a process of choice for molding large, three-dimensional glazing components for polycarbonate panorama roofs and roof bezels. This process is preferred, because it produces low-stress components that are free of sink marks and feature easy-to-coat surface properties.