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Iconic sports car roof made with advanced Makrolon® AG2677

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Bugatti needed a transparent, light-weight roof to complement the design of its Veyron 16.4 Grand Sport, one of the fastest super sports cars on the road. The roof material needed to complement the car’s sporty, open-roadster character while satisfying its commitment to safety. Bugatti chose automotive glazing created with Makrolon® AG polycarbonate.

Task

Enhancing sunroof design with ultra-durable polycarbonate

Provide the ideal material for a transparent, panoramic roof to be used on the Bugatti Veyron. Naturally, the material had to satisfy Bugatti’s stringent test regulations and narrow tolerance requirements, all while being highly functional and aesthetically pleasing.
Challenge

Deliver a tough material that performs well and looks great

Polycarbonate glazing for high-performance automotive roofing applications needs to meet a variety of requirements. These include exceptional strength and low energy transmission values, as well as vehicle safeguards for interiors and passengers. The material needs to be extremely strong and durable, yet extremely light. 
Solution

Makrolon® AG enables a strong, remarkably light roof design

The panoramic roof was made for Bugatti by KRD Sicherheitstechnik GmbH from 5 mm-thick solid sheets AG2677 polycarbonate.  Remarkably the roof, which is 1,230 mm long and up to 1,050 mm wide, weighs no more than 5.6 kg. It is made from transparent sheets printed with a black border, which are then thermoformed and coated with Momentive Performance Materials GmbH’s AS4000 polysiloxane wet-coat system, translating to a highly scratch- and weather-resistant roof.

Why Makrolon® AG2677 was the right solution for Bugatti

  • Ultra-tough: Offers excellent heat-, UV-, Impact- and scratch resistance.
  • Dependable: Material has high dimensional accuracy and stability.
  • Great optical quality: Hard coated Makrolon® AG provides glass-like transparency.
  • Easy processing: Grades available for injection molding and sheet extrusion.

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