Beverage can making process: Training videos (Part 5)
Continuing our series of videos that show how a beverage can is produced this latest upload looks at end coating, and testing for holes and flange cracks. The idea of these videos is to help those who are new to the industry to learn about can making. Videos are courtesy of Ball Packaging Europe.
Part 11: End coating
The metallic bright can end is coated from the outside in the end coating machine. The cans are conveyed via the intake turret to the working turret. Each of the six magnetic chucks picks up one can at the flange and sets it in rotation around its own axis.
Six spray guns rotate synchronously with the working turret and spray-coat the base of the respective allocated cans.
Part 12: Testing for holes and flange cracks
These two types of defect can occur due to the great degree to which the tinplate is formed. Each can is picked up by a support spindle and immediately moved in an axial direction until the open side has reached the flange seal.
It is then conveyed past a series of lights by the turret wheel. That means that light is shed on to the body of the can. If a hole or a flange crack allows light into the inside of the can, then the sensor on the open side of the can reacts in such a manner that this defective can is ejected whilst the machine is operating at full speed.