prov:value
| - Thus, e.g., polymeric base layer 21 can be formed from a polyester, advantageously polyethylene terephthalate, a polyamide, a polyolefin such as polyethylene, polypropylene, poly(ethylene-propylene) copolymer, a halopolymer resin such as polyvinyl chloride, polyvinyl fluoride, polyvinylidene chloride, polyvinylidene fluoride, polyimide, polycarbonate, polyurethane, polystyrene, hydrolyzed ethylene
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