| http://www.w3.org/ns/prov#value | - The intermediate layer can also be made of a thermosetting resin or thermoplastic resin such as polyethylene, polypropylene, polystyrene, polyvinyl alcohol, polyvinyl butyral, polyurethane, saturated polyester, unsaturated polyester, epoxy resin, phenolic resin, poly-carbonate and polyamide.
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