Multi-Matrix Fiber Composite Manu-facturing Process

In order to create a multi-matrix fiber composite with well-defined borders between the sections of different matrix materials, areas of the fiber sheet not to be soaked with the first matrix precursor material must be sufficiently compressed while it is applied. At the same time, all areas that are to be soaked must be reachable by the application tool. If the compression force is applied e.g. by clamps or a hydraulics, these requirements can be difficult to align, especially for more complex multi-matrix geometries.

According to the invention, sheets of strongly magnetic material are custom-cut and placed on the fiber fabric to cover the areas not to be soaked with the first matrix precursor. By using magnets to apply the necessary compression force, no machinery has to remain in place above the fiber fabric while the matrix precursor material is applied, thus ensuring that all required areas of the fabric remain accessible. Moreover, with computer numerical control and suitable automation tools (water jet cutting, industrial robots), the same production line can be used for different products without any manual re-adjustment.