| 摘要 |
PROBLEM TO BE SOLVED: To avoid going-out of carbonic acid, by guaranteeing extremely excellent sealing of a bottle, even when internal pressure of the bottle is extremely high.SOLUTION: A bottle 1 comprises a bottle body 2 composed of light metal and a neck 3 having an outer screw 4, and in its case, the bottle 1 comprises a closing cap 5 of a sleeve shape having a cover 6 for closing an opening part of the bottle 1 and a jacket surface 7 continuing with the cover 6 and having a screw 8 corresponding to the outer screw 4 of the neck 3. The edge 9 of the neck 3 of the bottle 1 is formed of a folded-back part 10 of the neck 3 for forming a protrusion part for making a round around the opening part of the bottle 1, and in its case, a free end part of the folded-back part 10 turns in the direction of an outside surface or an inside surface of the bottle 1, the folded-back part 10 is curvedly formed in an area of an apex part 11 of turning to the cover of the edge 9, and the edge 9 of the bottle 1 has a substantially O-shaped cross-section.SELECTED DRAWING: Figure 1 |
