| 摘要 |
PURPOSE:To surely detect sealing defects even in the case only a slight leakage of a fluid is observed or it is possible to cause leakage only when some force works on a container though seemingly no leakage is observed and to detect sealing defects even if the container and the fluid are transparent, without the detection precision being affected by the amount of the fluid filled in the container. CONSTITUTION:After a fluid substance container 2 made of a flexible material is pressed by a pressing apparatus 5, the size of a sealing part 2a which appears in the thickness direction is measured wherein the sealing part 2a is formed by sticking the inner faces of a container 2 to each other. The measured value is compared with a standard value which is previously determined according to the good or bad of the adhesion of the sealing part 2a and based on the result of the comparison, the good or bad of the sealing part 2a is determined. |
