B32B 5/22

Layered products characterised by the non- homogeneity or physical structure {, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts} characterised by the presence of two or more layers which {are next to each other and are fibrous, filamentary, formed of particles or foamed }