Pre-impregnated part comprising a main layer and a reinforcing layer

A pre-impregnated part, usable in a thermoplastic manner, and intended to manufacture a finished part made from composite material, the pre-impregnated part comprising:

• a main layer made from a first composite material including a first matrix made from a thermoplastic material and first reinforcing fibers embedded in the first matrix, the main layer being obtained from a main complex including at least a first layer of fibers comprising at least the first reinforcing fibers and at least a first layer of matrix comprising the thermoplastic material,
• a reinforcing layer made from a second composite material including a second matrix made from a thermoplastic material and second reinforcing fibers embedded in the second matrix, the reinforcing layer being obtained from a reinforcing complex including at least a second layer of fibers comprising at least the second reinforcing fibers and at least a second layer of matrix comprising the thermoplastic material, said reinforcing layer being fastened on at least a portion of the main layer, and
• wherein the pre-impregnated part has a flattened shape of at least a portion of the finished part to be manufactured from said pre-impregnated part, and in that a surface of the main layer is smaller than a developed surface of the finished part to be manufactured.