| 摘要 |
A mold for shaping a baseball or softball is constructed from two identical figure of 8 shaped mold pieces which correspond to an outside shape of a ball. The two mold pieces are made from flexible materials such as rubber, silicone or plastic resin, fit onto each other to form the outside shape of the ball. Joining areas of the two mold pieces have joining edges, and on inside sides of the joining edges on interior surfaces of the two mold pieces grooves are set which form a raised sewn section on a surface of the ball cover, and a material inlet and air outlet are formed where the two mold pieces join.
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