| 摘要 |
PURPOSE: A bottle cap is provided to be combined to each different container neck within limit of proximity standard with one bottle cap under any unfavorable conditions. CONSTITUTION: A bottle cap forms a container neck which standard of container neck external diameter is an error range within 3MM, several screw threads at inner wall of inner join of main body to provide bottle cap combined with one bottle cap to a container neck, a first screw thread(13) in lower side part, and a second screw thread(14) in top side part to combine according to screw form of container neck. Ending part of a first screw thread height is about 3.63MM on development view based on the spot of starting point of a first screw thread. The rotation of a screw of a first screw thread is within 360-degree revolution. A starting standard point of second screw thread which is a starting standard point of a first screw thread is about 3.73MM. A second screw thread comprises triple screw thread which has different starting point, and a second screw thread of different starting position is about 4.22MM based on a starting of a first screw thread. A height of side part inner wall area for combining is about 9.15MM.
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