CONTAINER SEAL INSPECTION METHOD

摘要

Method to determine the quality of a seal of a sealed container in a short period of time in an accurate manner. The method includes a first step for measuring the position of a center portion of said lid in the height direction prior to said retort sterilization process; a second step for exposing said sealed container to a pressurized air at least once in said retort sterilization process; a third step for taking out said container from a retort autoclave after the second step and measuring-the position of the center portion of said lid in the height direction which was measured in the first step; and a fourth step for determining the quality of seal from a result obtained by comparing the measured value obtained in the first step with the measured value obtained in the third step.