| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the seal keeping capability of a container which is sealed by using an annular vacuum attracting space. SOLUTION: This container has a container main part 10 which has an opening on its one side and a cover 20 which closes the opening of the container main part 10. An annular groove 21 is formed at least one of the container main part and the cover so as to surround the opening, an annular vacuum attracting space which surrounds the opening is formed by the groove when the opening is closed by the cover, the annular vacuum attracting space is evacuated, and the cover is attracted by the container main part to seal a container. An extended vacuum space 13 linked with the annular vacuum attracting space is provided to increase the volume of the vacuum attracting space.</p> |
