Patent ID: 9222269
Filing Date: 2015-12-29
Classification: B29C,B29K,E04B,E04F

Abstract:
1. A method for extruding a board comprising: providing an extrusion die having a longitudinal axis and an interior, the interior having an opening disposed adjacent thereto, an upper surface, a lower surface and opposing sidewalls; providing a feeder adjacent the opening to the interior of the die, the feeder adapted to feed a supply of continuous filaments; feeding thermoplastic polymer feed material into the die continuously so that the thermoplastic polymer feed material becomes molten; extruding the molten thermoplastic polymer feed material under pressure through the die, so that the molten thermoplastic polymer feed material attains a shape of an extruded board corresponding to the upper surface, lower surface and opposing sidewalls of the die, the extruded board having a cross section, with a centerline that is located midway between an upper surface of the extruded board and a lower surface of the extruded board, the centerline dividing the cross section into an upper portion and a lower portion; continuously placing a reinforcement filament within the molten thermoplastic polymer feed material as the thermoplastic polymer feed material is extruded through the die to form the extruded board, the reinforcement filament being placed only in the lower portion of the extruded board simultaneously while the board is being extruded.