| 摘要 |
PROBLEM TO BE SOLVED: To provide a container plug which can maintain a predetermined fitting quality, and appropriately remove the air inside thereof. SOLUTION: The container plug (an inner plug PL) which is fitted in a mouth part 111 of a container body 110 comprises a body part 10 to be fitted in the mouth part of the container body, and a packing 20 housed over the body part and disposed on a head part side of the plug, the body part is provided with a vent groove 11a formed along a side surface of the body part, and the packing has small vent holes. When the container body is hot and the internal pressure is high, the inside air passes through the vent groove 11a and reaches the packing 20, and passes outside through the vent holes in the packing 20, and thus, the air can surely be removed. |
