The Trimmer is an important machine in the 2-piece aluminum can manufacturing process, responsible for cutting the straight-walled can’s jagged (top) edge. This step follows the Bodymaker process, where the Cup is drawn and ironed into a straight-walled can, leaving an uneven upper edge that must be removed.  


In this slow-motion video, we take a look at two parts of the trimming process:

After the Bodymaker process, the can's top edge is irregular and must be removed for accuracy. The Trimmer Knives shear off this jagged edge as they rotate, leaving a smooth and uniform top edge. 

Once the top edge is cut, the excess aluminum, known as the Trim Ring, is separated from the can body and extracted through a vacuum chute. The vacuum system transports these Trim Rings through ducting to the Baler room, where they are collected and baled for recycling.