In the food and beverage industry, it is crucial to test the film seal on cans to ensure product quality and tightness. Even the smallest defects such as incorrectly positioned foils, scratches or dents can lead to leaks, complaints or increased rejects. Modern image processing systems enable automated, fast and precise quality control.
Challenge: Ensuring error-free film seals
In sealing machines, a film disc is thermally applied to the bottom of the can. The control must be done in a few seconds and cover several points at the same time:
- Completeness of sealing without raised edges
- Roundness and smoothness of the foil edge
- Central positioning on the can
- Integrity of the film (no scratches, dents or holes)
If a test criterion does not meet the specifications, the can is automatically ejected in the further process. Manual control is neither efficient nor reliable at high production speeds.
Solution: Automatic Inspection of Film Sealing on Cans with Smart Cameras B60
The system used consists of four smart cameras B60E203 LMDX001 with high-resolution lenses ZVZG104 and dome lights. Each camera inspects a specific component of the seal and communicates directly with the PLC via a central control hub. Once programmed, each camera provides an I/O signal for “Good” or “Bad”.
The cameras enable fast inspections at 3-4 second intervals and offer significantly higher resolution and smarter analysis functions than older CBCT cameras. Thanks to the modular uniVision software , filters, links and visualization can be customized, which efficiently supports application development and support.
Advantages for production
- Reduced scrap through reliable defect detection
- Higher process stability with minimal downtime
- Easy integration into existing PLC-controlled production lines
- Transparent visualization for operators and quality management
The combination of the B60 smart camera, high-resolution lens and dome light provides a robust solution for automatic sealing control of cans – from the position to the integrity of the film.
