FIRE RESISTANT COMPOSITE DOOR ASSEMBLY
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United States of America Patent
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Issued Date -
Nov 11, 2010
app pub date -
May 7, 2009
filing date -
May 7, 2009
priority date (Note) -
Abandoned
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Abstract
A fire resistant door assembly is disclosed comprising a pair of horizontal rails, a pair of vertical stiles, first and second door skins, and a foam core. The first and second door skins are made from a molded fiberglass material that includes aluminum trihydroxide, which provides a degree of ultraviolet light resistance as well as fire resistance. The foam core is made from a polyurethane foam qualified to ASTM E84, Class I, while the stiles and rails are made from a polyvinylchloride material. The resulting door assembly is made from 100% composite material, provide a high degree of durability, while resulting in a door that maintains its structural integrity and resistance to smoke and fire in accordance with state and local building codes.
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