| 摘要 |
A method for checking the condition of containers (2) comprising a hollow body (5) for containing a semi-liquid or semi-solid product and a membrane (6) for closing the hollow body (5) comprises the steps of: closing the container (2) inside a test head (4) comprising a housing (10) to hold the container (2) and a cap (11) hermetically sealing the container (2) and defining an empty internal space (15); pressurising the space (15) inside the cap (11) by introduction of pressurised air inside the space (15), for a defined period of time (Ta); releasing the pressurised air from the space (15); measuring the movement of the membrane (6) due to the pressurisation of the space (15), by means of a position sensor (14); depressurising the space (15); measuring the movement of the membrane (6) due to the depressurisation of the space (15), using the position sensor (14). |
