Abstract: A thick thermoplastic composite extrusion such as a railroad crosstie, marine piling, timber (such as a bridge timber), utility pole, highway guardrail, highway guardrail post, residential or marine decking material, fence post, fence rail, or house siding which is fabricated from a mineral filled thermoplastic composition.

Abstract: A method for producing an elongated composite that comprises the use of a cycleable molding apparatus that has (i) at least one extruder, (ii) a mold assembly carousel having an axis, inner circumference, outer circumference, and being rotateable about its axis in a substantial vertical plane and being capable of indexing a mold assembly to an injection station, cooling station, and removal station, and (iii) at least one mold assembly engaged with the outer circumference of the mold assembly carousel. Moldable resin is injected a mold assembly located about the axis of the mold assembly carousel. The mold assembly is rotated to a cooling station or cooling area and later rotated to a composite removal station, where the composite is ejected from the mold assembly.