Extrusion molding is a manufacturing process that allows resins, plastics and polymers to be formed into 2D profiles in specified lengths. The way this process works is that granules of raw material  are fed through a screw feed system where they are heated, causing them to melt and at the same time are subject to hi-pressure. Once heated and under pressure the molten material is pushed through a die, forming the shape of the die that can then be cut to various lengths.