Landshut, Germany -- A design team from BMW in Landshut, Germany, working with engineers from JSP and other specialists, has achieved weight savings of 15 percent and cost savings of 10 percent in the construction of rear seat-backs for the BMW 5 Series. A 10 May press statement from JSP said manufacturing of these products has just begun at its Wackersdorf, Germany, plant for delivery to BMW assembly plants in Germany and China.
The design team wanted to use an innovative three-part structure to create a lighter seatback, capable of passing statutory impact tests and BMW's own test schedule, said JSP.
At the centre of the structure is a section of energy-absorbing JSP's expanded polypropylene ARPRO, with an injection-moulded carrier facing the passengers and a layer of carpet facing the luggage compartment. All three components contribute to impact resistance.
The new design allows versatility at BMW, where manufacture has been integrated into its cockpit production facility, the statement commented. "The seatback sandwich technology can also be extended into other models and other applications," said BMW 's head interior technology, Karl Niebauer, in the statement.
According to the JSP statement, BMW calculates that 1.2 kg is saved on an already 'weight-reduced' part, along with fewer components, elimination of numerous process steps, and improved recyclability.