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JEC Europe 2012 - Ordinary semi-finished textile products, such as non-crimp fabrics, cannot always allow for optimal fibre orientation when used in complex 3D geometries. Using a modified tailored fibre placement (TFP) technology, load-optimised, near-net-shape hybrid structures (tailored fibre reinforced blanks) can be created.
In this process, reinforcement fibres are deposited together with thermoplastic filaments to produce flexible textile hybrid preforms. These preforms can be draped into a 3D geometry and consolidated into the final structural part.
The advantages of the preform are the freely adjustable material mix and fibre volume content, no waste, optimal fibre orientation, design freedom, safe handling, cost-effective production on multihead TFP machines.
Fibre lay-up using TFP technology allows the manufacture of textile preforms with several layers in one step. Each hybrid yarn is fixed with an upper and a lower thread by zigzag stitches. Neglecting the substrate, a one-layer preform is almost symmetrical.