| http://www.w3.org/ns/prov#value | - Polymer materials useful for making the backing panel 12 include various thermoplastic and thermoset resins, including but not limited to polyolefins, polyesters, polyvinyl chloride, polypropylene, polyethylene, polyamide, epoxy, vinyl ester, acrylic, polystyrene, ABS, melamine and mixtures thereof.
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