Equipment and duct liner insulation and method

Details Equipment and duct liner insulation and method Equipment and duct liner insulation and method

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 59/02 (2006.01) D04H 1/46 (2006.01) D06N 3/04 (2006.01) D06N 7/00 (2006.01) F24F 13/00 (2006.01) F24F 13/02 (2006.01)

Patent

CA 2405435

A polymeric fiber liner insulation includes of a resilient, insulation blanket core of randomly oriented entangled fibers with between 60% and 90% by weight of the fibers being standard polymeric fibers and/or flame retardant polymeric fibers and between 10% and 40% by weight of the fibers being polymeric lofting and bonding fibers. The first major surface the liner insulation has a low porosity or air and/or liquid impervious surface layer. The surface layer is formed by melting and consolidating fibers at and adjacent the first major surface of the blanket core or by coating the first major surface of the blanket core with a polymeric coating. The liner insulation exhibits a flame spread/smoke developed index of <=25/50.

La présente invention concerne un revêtement isolant à fibres polymères qui comprend un noyau de matelas isolant et résilient composé de fibres enchevêtrées à répartition aléatoire, dont 60 % et 90 % en poids sont des fibres polymères standards et/ou non inflammables et entre 10 % et 40 % en poids sont des fibres polymères de traçage et de liaison. La première surface majeure du revêtement isolant a une couche de surface à faible porosité ou perméable à l'air et/ou à l'eau. La couche de surface est formée par la fusion et la consolidation des fibres sur la première surface majeure du noyau de matelas et dans les zones adjacentes ou par l'enrobage de la première surface majeure du noyau de matelas d'un revêtement polymére. Le revêtement isolant présente un indice de propagation des flammes/pouvoir fumigène de 25/50 Itoreq.

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