Lightweight design is a common philosophy which enables engineers to keep the mechanical performance and functionality of a structure while reducing its weight. Continuous Fibre reinforced plastics (FRP) have the highest specific mechanical properties and are predestined for lightweight structural applications. The restricted industrial processability of continuous fibre reinforced plastics is a cost driving factor which reduces the scope of application actually to some premium components for example in aviation or automotive industry. Especially FRP based on thermoplastic matrices offer an attractive alternative due to their advantages in cost and in production. Compared to thermoset FRP, thermoplastic composites can be processed with short cycle times and a high reproducibility. Furthermore the weldability of thermoplastics leads to further process relevant advantages like thermoform ability and a high recycle ability. These positive features give reasons for the increasing demand on continuous fibre reinforced thermoplastics.