| 摘要 |
PROBLEM TO BE SOLVED: To surely prevent contained liquid from permeating to a filter in a plug structure for a various kinds of liquid containers before the container is used for the first time, to improve usability for users in the first-time use by allowing the container to open with a dispensing operation of the contained liquid only, and to reduce a dispensing resistance when the container is used for the second time and thereafter.SOLUTION: A plug member integrally includes a base part 35a attached to a plug holder 31 to be mounted on a spout of a container, a plug body 34 fitted into a fitting part 31c formed in an intermediate part of a dispensing path of the plug holder 31, and an elastic connecting part 35b connecting the plug body 34 with the base part 35a elastically. The dispensing path is closed by the plug member until the container is used for the first time. When an internal pressure of the container is increased by squeezing the container in the first-time use, the plug body 34 is separated from the fitting part 31c so that the dispensing path is opened all the time thereafter. |
