| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a synthetic resin container lid that reliably prevents a mouth/neck part (44) of a container from being fraudulently opened and that prevents an accidental breakage in a breaking line (18) to the utmost when the container lid (2) is attached to the mouth/neck part.SOLUTION: Each form of a locking protrusion (34) assumes a peculiar form in which a radial extension length (La) of a locking top surface (38) of a circumferential intermediate part (34a) is greater than a radial extension length (Lb) of locking top surfaces (38) of both circumferential side parts (34b).</p> |
