This was a 2013 European ATC presentation given by Cécile DEMAIN from Solvay Engineering Plastics. Thermoplastic composites (TPC) developed by Solvay Engineering plastics are composites based on polyamide 6 or 6.6 as a matrix and can be reinforced with glass fibers or carbon fibers. The two main interests vs. TPC. thermosetting composites are cycle time and recyclability. The development of TPC PA66 or short fiber hybrid structures / TPC PA66 is today's challenge.