| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plug with an unsealing function with which a position to be a spout hole can be easily opened wide, the finger does not get contaminated when opening, the position to be the spout hole is not opened by a misoperation during a distribution process, and the opening is not narrowed during storage even if a barrier layer of a sealing film at the position to be the spout hole is a vapor deposition film such as silicon oxide. <P>SOLUTION: The plug (10) having a lid (200) connected with a rear spout tubular wall (110) of a plug body (100) via a thin hinge (111) so that it can opened/closed is equipped with an opening (130) in the front of a base plate (120) of the plug body. An upper end horizontal plate (141), an intermediate tilting plate (121), and a lower end horizontal plate (143) are connected on the opening. An unsealing edge (145) is suspended on an outer peripheral lower surface of the upper end horizontal plate and the intermediate tilting plate. A pressing plate (144) is raised at the rear end of the lower end horizontal plate. An unsealing flap (140) is connected with the rear side end of the opening of a base plate via a thin hinge (121). A sealing ring (211) and a locking-cum-pressing plate (213) are suspended from the lower surface of a top plate (210) of the lid (200). <P>COPYRIGHT: (C)2004,JPO&NCIPI |
