| 摘要 |
PROBLEM TO BE SOLVED: To provide a cap which can prevent the leakage of a content from occurring as compared with a conventional one even if an impact is applied to a cap body, and to provide a bottle can having the cap and a cap manufacturing method. SOLUTION: For this cap 3 for beverage container, on the external surface 21 of a coining forming region 20, recessed coining sections 22 are formed to be dispersed. Therefore, a rigidity higher than a conventional one is imparted by making the cross-sectional shape of a processing region 10, to which a drawing process is applied, more complicated than that of the coining section 22, and the falling strength is increased by the increased regidity. Also, the processing region 10 can be prevented from being deformed by an impact such as a fall. Thus, even if an impact is applied to the cap body 7, the leakage of a content can be prevented from occurring better than a conventional one. COPYRIGHT: (C)2008,JPO&INPIT
|
