Abstract: A method and apparatus for forming fiber-reinforced thermoplastic materials which include the steps of arranging at least two sets of roll-forming dies in an operative relationship, introducing a portion of a fiber-reinforced thermoplastic element to said dies for predetermined deformation, heating the element to a temperature above the melting temperature of the thermoplastics in the element and then allowing the element to cool below the melting temperature, but not less than the recrystallization temperature of the thermoplastic, and passing the element in the state through the at least two sets of dies wherein the distance between each consecutive set of dies exceeds the deformation length created by the at least two sets of dies.