| 摘要 |
PROBLEM TO BE SOLVED: To provide an easily openable lid having an excellent openability attained by improving the shape of a top end of a tab without altering the shape of a lid panel in a container with an easy open mechanism. SOLUTION: In the easily openable lid, the longitudinal length a of a tab and the distance c from the forward end of a rivet to the forward end of a tab cut have a ratio of a/c being 9.0 to 26.0. |
