Abstract: Improvements in a method for extruding plastic members includes a joint connection for splicing glass fiber rebars together in end-to-end relation for use as reinforcing elements in an extruded plastic member. The extruded plastic member is cut into predetermined lengths at the locations of the splices or joint connections so that the reinforcing rebars in the extruded members are joint- or splice-free. A device for locating the position of the splices in the extruded plastic member is suspended above the extrusion apparatus and is adjustable for any predetermined length of reinforcing rebars to be used in the extruded plastic member. After the extruded member is cut, a chilled plate is inserted into the cut to cool and solidify any molten plastic that may remain at the confronting surfaces of the cut to prevent leakage of molten plastic from the cut ends of the extruded plastic member.

Abstract: An elongated, substantially rigid member suitable for use as a marine piling is formed by feeding a substantially solid plastic core into a die and continuously extruding a molten plastic into the die so that the molten plastic surrounds and bonds to the plastic core and to reinforcing bars fed into the die at positions surrounding the plastic core. The plastic core acts as a heat sink to facilitate cooling of the molten plastic and deters bending of the member while cooling.

Abstract: An elongated structural member suitable for use as a marine piling includes a continuous, extruded plastic body having rebar disposed within the plastic body and extending in the lengthwise direction of the structural member. The structural member is formed by continuously extruding a molten plastic into a die so that the molten plastic surrounds and bonds to rebar fed into the die.

Abstract: A flexible, fence-type, water-borne pollutant containment boom is disclosed having a flexible, permanently attached tension reinforcing belt of continuous, substantially parallel, high modulus, aramid fibers adhesively secured to the boom proximate its bottom edge and having a plurality of handles spaced along the top edge of the boom, the handles being molded on both sides of the boom and overlapping the top edge and surrounding openings cut in the boom proximate the top edge leaving flaps of boom material to selectively close the openings.