| abstract |
An extruded composite adapted for use as a building material includes a core having a base polymer and a filler material in a substantially homogeneous mixture and a polymeric capstock modified with an elastomer and/or a plastomer. To improve adherence of the polymeric capstock to the base polymer, the capstock can include a capstock polymer that is similar or substantially similar the base polymer. Additionally, various additives may be mixed with the capstock material to improve visual aesthetics of the product and performance of the building material, especially over time. |