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    • 2. 发明公开
    • METHOD FOR INCREASING INTERNAL PRESSURE OF HOLLOW BALL AND DEVICE THEREFOR
    • VERFAHREN ZURERHÖHUNGDES INNENDRUCKS EINER HOHLKUGEL UND VORRICHTUNGDAFÜR
    • EP3000508A4
    • 2017-01-18
    • EP14803727
    • 2014-05-20
    • DUNLOP SPORTS CO LTD
    • TAKIHARA HIRONORITANAKA HIROAKI
    • A63B39/02A63B47/00A63B102/02
    • A63B39/027A63B39/025A63B2039/022A63B2102/02
    • [Object] To provide a method for easily increasing the internal pressure of a hollow ball in a practical time. [Solution] A method for increasing the internal pressure of a hollow ball according to the present invention includes the steps of (1) putting a hollow ball 18 including an outer shell and a space surrounded by the outer shell, into a housing portion 4; (2) filling the housing portion 4 with a gas which is more excellent in permeability relative to the outer shell than oxygen gas and nitrogen gas; and (3) causing the gas to pass through the outer shell. When the outer shell contains natural rubber, preferably, in the step (2), the housing portion is filled with a gas having a permeability coefficient of 20 × 10 -17 m 4 /(N€¢s) at 25°C for the natural rubber. Preferably, in the step (2), the housing portion is filled with carbon dioxide gas.
    • 提供一种在实际的时间内容易地增加空心球的内压的方法。 [解决方案]根据本发明的用于增加中空球的内部压力的方法包括以下步骤:(1)将包括外壳的空心球18和由外壳包围的空间放入壳体部分4中; (2)用比氧气和氮气更高的相对于外壳的渗透性优异的气体填充收容部4; 和(3)使气体通过外壳。 当外壳包含天然橡胶时,优选在步骤(2)中,在25℃下,将透气系数为20×10 -17 m 4 /(N·s)的气体填充到壳体部分 天然橡胶。 优选地,在步骤(2)中,壳体部分填充有二氧化碳气体。