TPU panels make vehicle scratches less of a prickly topic

Innovative technologies from PolyOne Corporation have enabled Citroën to launch groundbreaking exterior protective panels on the new C4 Cactus passenger car.

Working closely with the Citroën design team, PolyOne developed a specialty OnColor Smartbatch colour and additive system that allows the distinctive ‘Airbump’ panels to meet stringent UV stability, appearance and durability requirements.       

“We are thrilled at the opportunity to be part of this effort by bringing enabling technologies to the Citroën team as they pioneer new directions in automotive design,” said Christoph Palm, General Manager, Colour and Additives for PolyOne.

The air-filled Airbump panels, manufactured from thermoplastic polyurethane (TPU), can compress up to 20mm, and bounce back to shape in an instant.

Citroën says that this will reduce the cost of vehicle ownership by reducing damage due to everyday bumps and scratches, such as those from shopping trollies or the doors of other vehicles. 

“By working with Citroën and its Tier One suppliers, we were able to develop an advanced solution that provides the panels with uniform, attractive, and durable colour despite exposure to sunlight, heat, and detergents,” Palm continued.

“TPU materials are rarely selected for a vehicle’s exterior, but by working together, we were able to overcome several material-related challenges.”