characterised by a layer comprising a deformed thin sheet , e.g. corrugated, crumpled (B32B29/08 takes precedence)

Full Title

Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form > 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 > characterised by a layer comprising a deformed thin sheet , e.g. corrugated, crumpled (B32B29/08 takes precedence)