Use of sulphur as an additive to inhibit the smoldering combustion of materials
AssigneeThe United States of America as represented by the Secretary of Commerce
InventorRobert J. McCarter
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Abstract
Disclosed is a smolder resistant upholstered furniture or mattress assembly nd a method for rendering the composite materials of such assembly smolder resistant. Placement of a layer of sulphur immediately adjacent a normally smolder-prone material in the composite effectively prohibits the advances of smoldering combustion to a dangerous stage. The sulphur layer is advantageously applied by backcoating the fabric overlay, coating or impregnating the fibrous or polyurethane foam materials or separating layers of such materials with sulphur-containing films, fabrics and the like. An advantageously effective amount of sulphur is from about 25-50 g/m.sup.2 to about 250-300 g/m.sup.2 in a layer having a depth of about 1 to 3 mm.
Claims15
A composite upholstered furniture or mattress assembly comprising layers of material wherein the inside surface of the outermost, normally smolder-prone layer is in intimate contact with a fabric layer containing sulphur in an amount effective to render said assembly smolder resistant.
A method of protecting a mattress or upholstered furniture assembly from smolder comprising, covering a normally smolder-prone material with a fabric layer containing sulphur in an amount effective to render said assembly smolder resistant.
Dependencies are inferred from the claim text.