Burn through resistant nonwoven mat, barrier, and insulation...

Details Burn through resistant nonwoven mat, barrier, and insulation... Burn through resistant nonwoven mat, barrier, and insulation...

E - Fixed Constructions

04

B

E04B 1/94 (2006.01) B64C 1/40 (2006.01) D04H 1/42 (2006.01) D04H 13/00 (2006.01) F16L 59/02 (2006.01)

Patent

CA 2340613

A burn through resistant nonwoven mat and cover film composite for use in a thermal and/or acoustical insulation blanket system, are, preferably, made up of non- respirable and/or biosoluble base fibers and capable of retaining their integrity and dimensional stability during 4 minutes of exposure to a fluctuating high pressure flame front at a temperature of 1100°C. Examples of non-respirable base fibers which make up the nonwoven mat are quartz fibers; aluminosilicate, aluminoborosilicate or alumina ceramic oxide fibers; partially oxidized pitch based fibers; and partially oxidized polyacrylonitrile fibers having mean diameters greater than 6 microns. Examples of biosoluble fibers are biosoluble glass fibers. Preferably, the nonwoven mats also include a lubricant sizing with a water repellent additive.

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