Abstract: A method and assembly for providing multi-stage extrusion of an article exhibiting an open interior. A multi-stage extrusion operation includes a first stage extrusion for receiving an initially extruded or otherwise pre-existing inner sleeve and extruding a surrounding sleeve and a plurality of radially projecting portions. A second stage subsequently extrudes an outer circular sleeve about the radially projecting portions. A third stage extrudes at least one wing portion to an outer edge of the outer circular sleeve.

Abstract: An assembly and process for forming a two stage extrusion of an elongated marine dock from a plasticized material, such as including but act limited to extruding a first generally “L” shaped bracket from a first more rigid thermoplastic, following which a cross head die arrangement is utilized in order to extrude a secondary arcuate and flexible material in extending fashion from a lower side of the “L” bracket. The secondary/flexible elastomer is extracted in an open flexed position relative to the first extruded bracket, and further such that, following completion, can be flexed into a closed engagement with an upper perpendicularly extending side of the bracket.

Abstract: An assembly and process for forming a two stage extrusion of an elongated marine dock from a plasticized material, such as including but act limited to extruding a first generally “L” shaped bracket from a first more rigid thermoplastic, following which a cross head die arrangement is utilized in order to extrude a secondary arcuate and flexible material in extending fashion from a lower side of the “L” bracket. The secondary/flexible elastomer is extracted in an open flexed position relative to the first extruded bracket, and further such that, following completion, can be flexed into a closed engagement with an upper perpendicularly extending side of the bracket.