| 摘要 |
PROBLEM TO BE SOLVED: To prevent a trouble like an erroneous rupture of score by an ordinary user from occurring with no score-rupturing tab provided at the external face of a cylindrical side wall, and to make a cap easily removable by hand from a mouth part of a container without using a special tool. SOLUTION: The present cap is composed of a cap main body 1 to be fitted and fixed to a mouth part of a container and an upper lid 2 to be provided for covering the cap main body 1, and the cap main body 1 is constructed, being equipped with a top plate part 5 whereon a contents-pouring opening can be formed and a cylindrical side wall 6 extending from the peripheral edge of the top plate part 5. A protuberance 20 for engagement with the external face of the mouth part of the container is formed at the inner face of the cylindrical side wall 6 while an annular score 30 is formed on a position at the underside of the protuberance 20, and the lower end of the cylindrical side wall 6 is curved toward the inside so that it can be fitted into a groove formed at the external face of the mouth part of the container. A slit 31, being a starting point for rupture for the annular score 30, is extending upward from the lower end of the cylindrical side wall 6 up to a point not reaching to the annular score 30. |
