| http://www.w3.org/ns/prov#value | - Examples of a material usable as binder of the cushion layer include rubbers such as urethane rubber, butadiene rubber, nitrile rubber, acrylic rubber and natural rubber, polyethylene, polypropylene, polyester, styrene-butadiene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic copolymer, vinyl chloride-vinyl acetate copolymer, vinylidene chloride resin, plasticizer-impregnated vinyl c
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