| http://www.w3.org/ns/prov#value | - The binding materials according to this invention incorporate strengthening agents which include metals which upon bending have small spring-back elasticity and suitable organic or inorganic fibers and filaments, for example, polycarbonates, polyesters, such as polyethylene terephthalate, or polyamides, such as nylon, cellulosic polymers such as rayon, inorganic materials like glass fibers, etc.
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