| 摘要 |
<p>Method for controlling the sealing of a cap on a container, such comprises the following operating steps:
- a first step of at least partly tilting a container (3) carrying mounted a cap (2) arranged to close the opening thereof and containing a liquid for human consumption therein with conductivity exceeding 0.5 µS/cm; the container (3) is arranged in a at least partly capsized position (R) in which it wets with the liquid for human consumption contained therein the cap (2) the widened portion (8) of the container (3);
- a first step of associating to the container (3) a first electrode (6) having a first capacitive coupling (C1) with the container (3) at the cap (2);
- a second step of associating to the container (3) a second electrode (7) having a second capacitive coupling (C2) with the container (3), at the widened portion (8) thereof spaced from the cap (2);
- a step of generating voltage pulses between the electrodes (6, 7);
- a step for measuring the currents between the electrodes (6, 7) due to the abovementioned voltage pulses;
- a step for calculating, by means of a logic control unit, the current integrals generated by the voltage pulses;
- a discrimination step, which selects, by means of the logic control unit, values of current integrals exceeding a preset threshold value produced by the currents between the abovementioned electrodes (6, 7) passing through micro-holes present between the cap (2) and the opening of the container (3), to discriminate faulty containers (3) from containers (3) with aseptic sealing;
- a second step of tilting the container (3) from at least partly capsized position (R) to a straight position (D).</p> |
