US 11,702,845 B2
Layered thermoplastic structure with reflective intermediate layer and method of manufacture
Sizhu You, Auburndale, MA (US)
Assigned to CertainTeed LLC, Malvern, PA (US)
Filed by CertainTeed Corporation, Malvern, PA (US)
Filed on Feb. 7, 2020, as Appl. No. 16/785,188.
Claims priority of provisional application 62/803,030, filed on Feb. 8, 2019.
Prior Publication US 2020/0256065 A1, Aug. 13, 2020
Int. Cl. E04F 13/18 (2006.01); B32B 27/08 (2006.01); B29C 48/21 (2019.01); E04C 2/20 (2006.01); B29L 31/00 (2006.01); B29K 101/12 (2006.01)
CPC E04F 13/18 (2013.01) [B29C 48/21 (2019.02); B32B 27/08 (2013.01); E04C 2/20 (2013.01); B29K 2101/12 (2013.01); B29K 2995/003 (2013.01); B29L 2031/776 (2013.01); B32B 2307/304 (2013.01); B32B 2419/00 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A thermoplastic construction product comprising:
a coextruded layered structure including:
a base layer having a thickness of at least 500 micrometers and including a first thermoplastic material;
an outer layer including a second thermoplastic material and calcium carbonate or talc as a filler; and
an infrared-reflective intermediate layer that is coextruded with the base layer and the outer layer and is disposed between the base layer and the outer layer, the infrared-reflective intermediate layer having a thickness of at least 30 micrometers,
wherein the outer layer has a first dark color having a value of L* in the CIELAB color space of less than 50, and is at least as thick as the infrared-reflective intermediate layer; and
wherein the thermoplastic construction product is configured as a surface cladding for an outer surface of a structure.