Duct wrap and method for fire protecting a duct

Details Duct wrap and method for fire protecting a duct Duct wrap and method for fire protecting a duct

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 59/14 (2006.01) F16L 57/04 (2006.01)

Patent

CA 2597578

An article for fire protecting a duct includes a first layer of a first material including a noncombustible fibrous material and a second layer of a second material including an intumescent material. The first layer is adjacent the second layer. The article is non-self-supporting and has an initial thickness of less than about three inches when in a first application condition, and an expanded thickness when in a second heated condition. The expanded thickness is greater than the initial thickness. At the expanded thickness, the article meets Section 5.5 of AC101 Acceptance Criteria for Grease Duct Enclosure Assemblies, as specified in April 2001 by the International Council of Building Officials (ICBO-ES).

La présente invention concerne un article pour protéger un conduit contre le feu qui comprend une première couche d~un premier matériau comprenant un matériau fibreux incombustible et une seconde couche d~un second matériau comprenant un matériau intumescent. La première couche est adjacente à la seconde couche. L~article n~est pas autoporteur et possède une épaisseur initiale inférieure à environ trois pouces lorsqu~il est utilisé dans une première condition d~application, et une épaisseur expansée lorsque utilisé dans une seconde condition de chauffage. L~épaisseur expansée est supérieure à l'épaisseur initiale. À l~épaisseur expansée, l~article satisfait la section 5.5 des critères d~acceptation AC101 pour les assemblages de conduits (Grease Duct Enclosure Assemblies), telle que spécifiée dans le numéro d'avril 2001 de l~International Council of Building Officials (ICBO-ES).

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