| 摘要 |
PROBLEM TO BE SOLVED: To judge easily and surely whether a sealed container storing various contents is surely sealed, and also to automatically test without using an expensive machine. SOLUTION: This relates to a sealed container test method for testing whether a container 1 has a leak or not. After contents 4 are filled in the inside of a container main body 2 having an opening 2a, the opening 2a is sealed with a container cover 3 for making a sealed container 1. At least either of the container main body 2 or the container cover 3 is deformable by the change of inner pressure of the sealed container. Immediately after high temperature contents are filled on the main body 2, the opening 2a is sealed with the cover 3 and the contents 4 in the sealed container 1 are cooled. Then the change of the internal volume of the container 1 accompanied by the cooling of the contents 4 is measured. |
