TEMA PI-CYLINDER

TEMA PI-CYLINDER, Mühlbauer’s print inspection solution for tubes, cans, cups, and other tubular bodies, is integrated into the printing machine. The inspection is executed successive to the printing process on a free, driven mandrel. The inspection object rotates min. 1.2 times in front of the color line-scan camera for a full scan of the decoration. The LED lighting system is best adaptable to the individual characteristics of both substrate and decoration. The print quality is determined by comparing the print image against a stored reference, quality assessment is immediately available. The main defects to be detected are color variations, out of register/offset, distorted print, stains, blobs, smear, voids, missing print, inhomogeneous substrate, and scratches or blisters as far as visible in the camera image. A barcode verification is also available. The defect signal can be used for triggering a warning signal, a reject of the tube, or even a machine stop if necessary.