Convoluted fiber pad

Details Convoluted fiber pad Convoluted fiber pad

2005-12-22

2008-11-18

Torres-Velazquez, Norca (Department: 1794)

Stock material or miscellaneous articles

Structurally defined web or sheet

Nonplanar uniform thickness material

C428S161000, C428S162000, C428S170000, C428S174000, C428S179000, C428S180000, C442S327000, C442S366000

Reexamination Certificate

active

07452589

ABSTRACT:
Present 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. The convoluted surfaces of the non-woven batt layer and the foam layer are aligned so that the upstanding projections of the batt convoluted surface project into the corresponding depressions of the foam convoluted surface, while the upstanding projections of the foam convoluted surface project into the corresponding depressions of the batt convoluted surface.

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