| 摘要 |
PROBLEM TO BE SOLVED: To prevent housed foods from flowing out and foreign matters from intruding from the outside, and to prevent a container from swelling out because of an inside fermentation gas by a method wherein a flexible tongue be in slidable contact with an opening of the container is provided at a groove formed at an indented inner wall at the periphery of a lid so as to the inside and the outside of the container main body communicate with each other. SOLUTION: A relatively wide thick groove 50 and a relatively narrow thin groove 52 are formed being indented respectively at an inner circumferentical side 22a and an outer circumferential side 22b of an indented part 34 at the outer periphery of a circular upper face 32 of a lid to be fitted to an opening 24 of a container main body 20, and a fermentation gas discharging port 40 is opened along an indented groove formed extendedly almost entirely over an outer circumferential face 35 for fitting to a first protrusion 24 of the container main body 20 and furthermore, a flexible tongue 54 in a nail shape in slidable contact with the opening 24 of the container main body 20 is formed in protrusion at the indented part 34 being close to the thick groove 50 and the thin groove 52. As the pressure inside the container main body increases by a fermentation gas, the flexible tongue 54 is elastically deformed with easiness, communicating the thick groove 50 and the thin groove 52 with each other, and thereby the fermentation gas is discharged to the outside through the gas discharging port 40 of the container main body 20. |
