New sealing surface inspection for glass bottles, with a double flash feature

Filled glass bottles have to be leakproof. But this can only be assured if the bottle’s mouth is undamaged. To enable damage to the inside sealing surface of glass bottle mouths to be detected even more accurately, Krones AG, Neutraubling, Germany, has developed a “glass sealing surface inspection” module, which can optionally be fitted to empty-bottle inspectors of the Linatronic series.

One particularly new feature of this module is the type of illumination provided. As every photographer knows, the better the lighting, the better the resulting image, at least when you want a motif to be accurately depicted. And this goes for inspection photos as well. Hitherto, in sealing surface inspection, the illumination has come from above, using LEDs in a dome-shaped configuration, without any stroboscopic effect. Now, though, dual-flash LED illumination ensures maximised inspection accuracy. Two pictures are taken of each container, one of them with angled illumination from above, and one with vertical illumination. Thanks to this optimised double-flash lighting concept, inspection has also been optimised, for more accurate detection of damage to the bottle’s inside sealing surface.