Patent ID: 6797653
Filing Date: 2004-09-28
Classification: D04H,D06N,F16L,F24F,Y10T

Abstract:
A resilient, polymeric fiber liner insulation, comprising:a relilient insulation blanket core of polymeric fibers; the blanket core having a length and a width; the blanket core having first and second major surfaces defined by the length and width of the blanket; the blanket core having a thickness of about 0.5 inches or greater; the blanket core having a density between 1 pcf and 3 pcf; the polymeric fibers being between 60% and 90% by weight standard polymeric staple fibers and/or flame retardant polymeric staple fibers and between 10% and 40% by weight lofting and bonding polymeric fibers; the polymeric fibers having an average denier between 3 and 15; the polymeric fibers having an average length between 0.5 and 4.0 inches; a surface layer coextensive and integral with the first major surface of the blanket core; the surface layer of the first major surface of the blanket core being a polymeric coating that has a dry application weight of between 8 and 20 g/ft2; the surface layer being less permeable than the second major surface of the blanket core; the surface layer having a porosity between 200 and 1000 Mks Rayls that provides the polymeric fiber liner insulation with a higher noise reduction coefficient than an identical polymeric fiber insulation blanket without the surface layer and that enhances the sound absorption properties of the liner insulation while maintaining a smooth surface to minimize locations where dust, dirt particles, bacteria and mold can collect; and the polymeric fiber liner insulation having a flame spread/smoke developed index of &lE;25/50.