Abstract: A filler preform in a wedge form includes reinforcing fiber bundles consisting of reinforcing fiber filaments, wherein the filaments are directed parallel to each other within the fiber bundle, wherein the 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 fiber bundles have a length in the range from 2 to 20 mm and at least 60% of the fiber bundles are reversibly fixed in a curved form within the wedge filler preform whereby flanks of the curved fiber bundles create an opening angle of less than 120° and the opening angle of the curved fiber bundles relates with an opening angle of the wedge form of the wedge filler preform. A method for producing the wedge filler preform and a method for producing a reinforcing fiber composite include a filler perform.

Abstract: A braided radius filler, including at least three carbon yarns wherein at least one carbon yarn is a continuous carbon filament yarn and at least two carbon yarns are braided together with each other, wherein at least one continuous carbon filament yarn contains a resin composition in a concentration in the range from 1 to 10 wt. % relative to the fiber weight of the continuous carbon filament yarn and the total amount of resin in the radius filler is less than 10 wt. % relative to the total fiber weight of the radius filler and the braided radius filler is braided according a formula. A further object pertains to a method for producing the radius filler and a composite comprising the radius filler.