Stock material or miscellaneous articles – Composite
Reexamination Certificate
2006-10-27
2010-12-07
Ahmed, Sheeba (Department: 1787)
Stock material or miscellaneous articles
Composite
C428S220000, C428S323000, C428S332000, C428S500000, C428S515000
Reexamination Certificate
active
07846548
ABSTRACT:
A co-extruded structural member is disclosed having first and second co-extruded layers. The first co-extruded substrate layer comprises a structural preform and is substantially reflective of near-infrared (near-IR) radiation. A co-extruded cap layer is substantially transparent to near-IR radiation. The cap layer can be provided in aesthetically pleasing dark colors, while heat absorption is minimized due to the reflective properties of the near-IR reflective substrate layer. Using a co-extrusion process enhances the durability of the ultimate product over previous systems which use relatively fragile paint coatings to limit heat absorption. By providing near-IR transmissive and reflective pigments within the co-extruded polymers, a highly durable finished product is obtained. The co-extruded layers are disclosed for use in fence and deck applications, but will also find application in a wide variety of building product applications, both exterior and interior.
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Kim Joong-Youn
Shiao Ming-Liang
Ahmed Sheeba
Certain-Teed Corporation
Duane Morris LLP
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