INSULATION PRODUCT HAVING NONWOVEN FACING AND PROCESS FOR MAKING SAME

摘要

Insulation products having nonwoven facings and processes for making such products are provided. In a preferred process of making an insulation product, a mat (10, 111, 113) is formed containing randomly oriented inorganic fibers bonded by an adhesive. The mat (10, 111, 113) includes a pair of side portions (14, 15) and first and second major surfaces (11, 12) thereon. A nonwoven layer (13) is formed in situ onto the mat (10, 111, 113). The nonwoven layer (13) comprises a resinous material which is melt bonded to at least the first major surface (11) of the mat (10, 111, 113). The preferred insulation products are porous to water vapor and permit air to be evacuated from the mat (10, 111, 113) when the insulation product is compressed, such as during packaging. The preferred insulation products include a nonwoven layer (13) having a thickness of less than about 1 mil and an ASTM E-84 flame spread test of 25 or less in the absence of fire retardants.