| 摘要 |
PROBLEM TO BE SOLVED: To facilitate attachment and detachment of inner lid, and to decrease the extent of oxidation and decomposition of contents caused by air by removing the air inside a container by a method wherein an air vent is provided at the inner lid main body, and a handle having a protuberant plug for closing the air vent is fixed to the inner lid main body. SOLUTION: An air vent 4 is provided at the center of an inner lid main body 1 which elastically deforms when being mounted onto a container and seals up the container, and one end of a long handle 2 with a protuberant plug 3 for closing the air vent 4 provided at the underside of its middle point is fixed to the periphery of the inner lid main body 1. On thrusting an inner lid N into the container and put over contents, an air inside the inner lid N is exhausted through the air vent 4 and therefore, the inner lid N can be thrust easily into the container. Then, with the air vent 4 closed with the plug 3 of the handle 2, the contents in the container are sealed up. On removing the inner lid N, the plug 3 is removed from the air vent 4 with the handle 2 pulled up, and as the air flows into the container, the inner lid N can be removed easily. |
