FIELD: packaging industry.
SUBSTANCE: torque, which is required to open a plastic screw cap (14) which is screwed onto the bottle (10), is determined by the contactless method, due to the fact that the rotational position of the screwed plastic screw cap (14) is determined relative to the bottle (10). The rotational position is determined by the image processing using the label on the bottle (10) and the label on the screw cap (14). The ventilation grooves (30) which interrupt the turns of the screw thread (12) on the bottle neck can be used as a label on the bottle (10), and the predetermined location (32) of rupture on the protective ring (20) of the screw cap (14) can be used as a label on the screw cap (14).
EFFECT: improvement of the device.
10 cl, 2 dwg
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RU2114035C1 |
