K 2025 Unveils Revolutionary Materials to Transform Future Car Interiors
The K 2025 trade fair in DĂŒsseldorf has showcased cutting-edge materials and technologies set to reshape car interiors. Innovations ranged from ultra-transparent polymers to sustainable composites, with major players like Asahi Kasei, Kurz, and Pöppelmann presenting new solutions for automotive design and manufacturing.
Asahi Kasei introduced AZP, a new optical polymer designed for transparent plastics in vehicle interiors. The material stands out for its near-zero birefringence and lightweight properties, making it ideal for applications like head-up displays. Despite its potential, no other companies at the fair were linked to AZP's development or production, though Arkema displayed its own Rilsan Clear polyamides for AR/VR eyewear.
The company also unveiled a thermoplastic styrene block copolymer (SEBS) for interior surfaces. This adhesive-free solution simplifies layer bonding, improving recyclability without compromising performance.
Meanwhile, Kurz demonstrated Deep Black Surfaces, a technology that creates non-reflective, high-contrast black finishes for control panels and screens. The effect enhances visibility while reducing glare.
Another highlight was NFPP, a natural fibre-reinforced composite combining flax or kenaf with polypropylene (PP). Developed jointly by Wittmann, Frimo, Kurz, and Polyvlies, it forms a resilient, lightweight matrix in under 65 seconds. The material's organic texture and stability were showcased in a production-ready component at Wittmann's stand.
Lightweighting also took centre stage, with Pöppelmann presenting a centre console carrier made from 55% recycled content. Processed using the MuCell foaming method, the part achieves significant weight reduction. Additionally, KH displayed metal-like control elements for the BMW iX, featuring a thin indium PVD coating that creates a striking depth effect.
Five broader trends dominated the fair: the use of renewable raw materials, recycled content, special visual effects, integrated lighting, and lightweight construction. These themes reflect the industry's push toward sustainability and advanced functionality in car interiors.
The innovations at K 2025 highlight a shift toward more sustainable, lightweight, and visually advanced car interiors. From Asahi Kasei's optical polymers to NFPP's natural fibre composites, the technologies on display aim to improve performance while reducing environmental impact. Many of these solutions are already production-ready, signalling rapid adoption in future vehicle designs.
