| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cap which can be turned smoothly without an increasing torque until it seals up a bottle can when capping the bottle can again, and the bottle can with the cap that is sealed certainly when capping it again. <P>SOLUTION: The cap 3a having a female screw part 9 is fitted on the metal bottle can having a male screw part on a capping part. The female part 9 is formed to be shorter than that of the male screw part of the bottle can, and has a complete screw portion C with a lead angle θ and a screw terminal B formed at the angle coinciding with the lead angle θ. <P>COPYRIGHT: (C)2004,JPO |
