作者: Derrick K. Brantley
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摘要: A soccer ball having a high end synthetic cover formed from non-woven fiber mat impregnated with polyurethane. The fibers in the backing of material have denier about 0.02 or less. ball, which can be to meet association specifications, has reinforced polyurethane Shore hardness 40-80 and stitch tear strength at least 45 psi, thereby imparting favorable combination softness durability.