| http://www.w3.org/ns/prov#value | - The covering sheath 4 may comprise a film material prepared from such materials as polyolefins such as polyethylene, polypropylene, an ethylene-propylene copolymer, an ethylene-vinyl acetate copolymer and a crosslinked ethylene-vinyl acetate copolymer; polyesters such as polyethylene terephthalate and polybutyrene terephthalate; polyvinyl chloride, polystyrene, a polyurethane, a polyamide, a polyi
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