Abstract: A mattress or mattress foundation comprising a core and a ticking surrounding the core, the core comprising a spring assembly, a flammable core component positioned above the spring assembly, and a fire resistant (FR) insulator pad positioned between a spring assembly and the flammable core component, wherein the FR Insulator pads protects the flammable core component by delaying the penetration of the flammable core component by the spring assembly during a partial or complete consumption of the mattress or mattress foundation by a fire. The FR insulation pad may be a nonwoven fiber batt comprising a homogeneous blend of shoddy fibers and oxidized polyacrylonitrile fibers. If the mattress or mattress foundation further comprises a surface FR layer, the surface FR layer is the primary FR layer for the mattress or mattress foundation and the FR Insulator pad is the secondary FR layer for the mattress or mattress foundation.

Abstract: resent invention relates to a process of forming a multi-layer pad of a non-woven fiber batt and a foam layer having conforming convoluted surfaces and to a multi-layer pad incorporating a non-woven fiber batt and foam layer. The process of forming a non-woven batt layer and a foam layer having conforming convoluted surfaces comprises transporting each layer along its longitudinal dimension while compressing each layer along its lateral dimension. Concomitantly with compression, each layer is cut transversely along its lateral dimension to separate each layer into an upper segment and a lower segment and to provide conforming convoluted surfaces on the segments of each layer, the convoluted surfaces comprised of upstanding projections and depressions.