| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a synthetic resin plug cap which can surely prevent the plug cap from coming off the mouth of a container without an axial score being broken by mischief or the like, and is excellent in tamper-evident performance. <P>SOLUTION: In the plug cap, a cylindrical sidewall of a cap body 1 is partitioned by a peripheral slit into the inside wall and the outside wall. An axial weakening line 27 is formed close to a hinge connection part of the outside wall. A separating region, an easy breaking region and a connection region are formed circumferentially in order between the lower ends of the outside wall 6b and the inside wall 6a. The separating region 21a is formed in a region starting from a position distant from the axial weakening line by 5-60° in the opposite direction to the hinge connection part and extending to a position distant from the axial weakening line by 25-165° in the direction of the hinge connection part. <P>COPYRIGHT: (C)2010,JPO&INPIT |
