Weight reduction through intelligent lightweight construction in the uppermost vehicle position
(good center of gravity) up to 5kg, causing improved driving performance, larger range
Assembly space integration of E/E components
(wiring harness, antenna,…within the skeleton structure)
-> Improved sense of interior space thanks to slimmer profile geometry
CRFTP bars (Continuous Fiber-Reinforced Thermoplastics) → load-bearing capacity
Injection moulding scope → drive line
Metallic connection plates left/right → Easy integration in the body shop (weldability)
Metallic adhesive flange → Direct roof bonding
-> Function integration in injection moulding range e.g. bracket for control units, clip connection for cleaning lines and wiring harness
Since the beginning of 2023, KOLLER has been producing and supplying a unique structural component for the chassis of the BMW IX to the BMW plant in Dingolfing. The industrialization of the so called CFRTP-Heckfensterrahmen was implemented in close cooperation with BMW Landshut very successfully within a very short time. The Heckfensterrahmen is a so called bionic structural component in hybrid skeleton lightweight design. KOLLER became the world’s first TIER1 series supplier to produce automotive structural components in this technology alongside BMW itself.
The Heckfensterrahmen is built as a thermoplastic composite with steel parts and carbon fiber this makes it very special and unique. The carbon fiber is embedded in a thermoplastic matrix and only used in a load path-oriented manner. The system itself is 100% recyclable and reusable. The use of materials is reduced to a minimum – thanks to load-path oriented geometry.
