To provide vessel lids (2 and 102) which can be manufactured at a sufficiently low cost, and prevent rust generation even when a cleaning solution is used while the tamper-evident characteristic can reliably be prevented from being impaired without excessively increasing the required torque in the initial unsealing operation.
The vessel lids comprise synthetic resin plug bodies (4 and 104) to seal a neck of a vessel, and outer synthetic resin lid bodies (6 and 106) to prevent detachment of the plug bodies from the neck of the vessel. The plug bodies have top walls (8 and 108) to cover a top surface of the neck of the vessel. The outer lid body comprises annular walls (26 and 126) to cover an outer circumferential edge of an upper surface of the top walls (8 and 108) of the plug bodies, and a cylindrical skirt wall (28) suspended from the circumferential edge of the annular walls.
UTSUNOMIYA WATARU
FUKUSHI SEIJI
SATO HIROSHI
