| 摘要 |
PROBLEM TO BE SOLVED: To provide an easy openable can lid which can suppress occurrence of pop missile phenomenon and can be easily opened.SOLUTION: An easily openable can lid 1 has an opening piece 10 partitioned by a score groove 11, and a tab 6 which is attached to a peripheral part of the opening piece 10 by a rivet 5. The can lid 1 is so configured that the score groove 11 is sequentially broken from one end 12 side to the other end 13 side by a lever action of lifting one end 7 of the tab 6, whereby the lid is opened. In the can lid 1, the score groove 11 includes inside inclined surfaces 17, 23, 27 which are inclined to a center side of the opening piece 10, and outside inclined surfaces 18, 24, 28 which are inclined outside the opening piece 10. Further, an angle formed by a bottom surface 19 and one inclined surface of the inside inclined surface 17 and the outside inclined surface 18 in a part 12 of the score groove 11 in an advancing direction of breakage is changed in another part 26 of the score groove 11 in the advancing direction of breakage. |
