This specification discloses fiber additives for reinforcing matrix
materials and an apparatus for forming the same, said fibers having
flattened shanks terminated with egg-shaped nodules. The apparatus
comprises a roller-former-cutter assembly that forms the fibers in a
single operation from continuous filaments using compressive force and a
unique cut-out and blade assembly. The fibers described are designed to
have an increased pull-out resistance compared to other fiber
morphologies.