| 摘要 |
An inflatable game ball includes an inflatable bladder, a winding layer surrounding the bladder, a rubber inner carcass layer surrounding the winding layer, and a cellular outer carcass layer surrounding the inner carcass layer. During manufacture of the game ball, the bladder is first inflated. A plurality of yarns are wound around the inflated bladder to form the winding layer, on which the inner carcass layer is molded. A plurality of patches are interconnected by stitching to form a bag that has an opening. The bag is reversed, and the bladder is deflated so that an assembly of the bladder, the winding layer, and the inner carcass layer can be inserted into the reversed bag via the opening. The opening in the bag is then closed by stitching so as to form the outer carcass layer on the inner carcass layer.
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