Layered products comprising a layer with external or internal discontinuities or unevennesses

Official title: characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids {(foam layer B32B5/18; layer of synthetic resin characterised by fillers that create voids or cavities B32B27/205); characterised by an apertured layer}

B32B3/26 (Layered products comprising a layer with external or internal discontinuities or unevennesses) appears on 9,974 US grants and 13,826 published applications in this corpus.