Convoluted multi-layer pad and process

Details Convoluted multi-layer pad and process Convoluted multi-layer pad and process

2006-03-07

2006-03-07

Vo, Hai (Department: 1771)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

C428S304400, C428S158000, C428S161000, C428S162000, C428S182000, C442S221000, C442S370000

Reexamination Certificate

active

07008691

ABSTRACT:
The 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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