Layered products characterised by the non- homogeneity or physical structure

Child Classifications

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• B32B 5/02 characterised by structural features of a layer
• B32B 5/14 characterised by a layer differing constitutionally or physically in different parts, e.g. denser near its faces
• B32B 5/16 characterised by features of a layer formed of particles, e.g. chips, powder
• B32B 5/18 characterised by features of a layer foamed material
• B32B 5/22 characterised by the presence of two or more layers which