| http://www.w3.org/ns/prov#value | - The binder fiber may comprise any materials known to be useful for this purpose, such as polyester fiber, polyolefin fiber, etc., however, the preferred fiber comprises acrylic fiber which may be produced from any known acrylic polymers such as polyacrylonitrile, copolymers of acrylonitrile and other copolymerizable monomers such as methyl methacrylate, ethyl acrylate, etc.; homopolymers and copol
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