Patent ID: 8206629
Filing Date: 2012-06-26
Classification: C01P,C09C,E04D,E04H,Y02A,Y02B,Y10T

Abstract:
1. A method for forming a polymer fence post or rail structure comprising: extruding a first polymer providing a structural preform of a polymer fence post or rail structure having opposite sides, wherein at least a portion of the structural preform is substantially near-infrared (near-IR) reflective; coextruding with the first polymer a second polymer having a solar radiation absorbing pigment, the second polymer being substantially near IR transmissive and providing an outer cap layer overlying the structural preform, wherein the cap layer is about 1 mil to less than about 10 mils in thickness and is substantially visibly opaque while hiding the structural preform; and the structural preform and outer cap layer providing a longitudinal fence post or rail structure having said opposite sides, wherein each 8 foot length bows not more than ½-inch along its longitudinal centerline while exposing one of said opposite sides to direct sunlight.