| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent the opening part of a glass bottle from being broken when the inner plug is removed from the glass bottle by using a removing implement. <P>SOLUTION: In the glass bottle where a lip part 11 in which the inner peripheral face of an inner plug outer cylindrical wall is brought into contact with the outer face upper end part of the opening part, is formed, and an annular recessed part 12 engaged on an annular projection formed on the lower end part of the inner peripheral face of the outer cylindrical wall of the inner plug is formed below it, and the vertical cross-sectional shape of the side face of the lip part is a curved line convex to the outside having no vertical line part being a straight line in the vertical direction, on an annular recessed part, on its vertical cross-section, an inclined face 13 constituted with a straight line obliquely descending in the inside direction just below the curved line convex outside is provided, and the angle formed to the horizontal face of the inclined face is made to be 47 to 53°. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
