Wedge filler preform

A wedge filler preform comprising reinforcing fiber bundles consisting of reinforcing fiber filaments,

• wherein the filaments are directed parallel to each other within the reinforcing fiber bundle, wherein the reinforcing fiber bundle contains a first resin composition in a concentration in the range from 1 to 10 wt. % relative to the fiber weight,
• wherein the reinforcing fiber bundles have a length in the range from 2 to 20 mm and at least 60% of the reinforcing fiber bundles are reversibly fixed in a curved form within the wedge filler preform,
• wherein said fiber bundles further comprise curved flanks that create an opening angle of less than 120° and the opening angle of the curved reinforcing fiber bundles relates with an
• opening angle of the wedge filler preform,
• wherein the curved reinforcing fiber bundles are oriented isotropically in the direction parallel to the opening angle of the wedge filler preform, and
• wherein the fibers are oriented anisotropically within the individual reinforcing fiber bundles.