Stabilized dry preform and method

摘要

A method of forming a preform (200) includes providing a layer (16) of tackified fibrous material containing structural fibers (18) and resin (24). The layer is passed through a forming die set (50) having a die cross-sectional shape. The thermoplastic resin is heated. The layer is formed into the die cross-sectional shape. The thermoplastic resin is then allowed to solidify in a manner such that a preform is formed having the die cross-sectional shape.