The dome of the can is created during the Bodymaker process through a precise, multi-step operation:

The process begins when the Punch strikes the Clamp Ring. The Clamp Ring is responsible for forming the Stacking Radius, a critical feature of the can’s bottom that ensures stability during stacking.

While forming the stacking radius, the Clamp Ring moves backward, applying consistent pressure to the metal. This pressure is essential for controlling the flow of the material and preparing it for the next stage.

The Punch then strikes the Domer Die, which creates the concave shape of the can’s dome. The pressure applied by the Clamp Ring during this step ensures that the metal flows evenly, forming the dome smoothly and without wrinkles.

Importance of Bottom Forming

The Bottom Forming process is critical for creating a strong, wrinkle-free dome. The dome’s design not only enhances the can’s structural integrity but also minimizes material use while ensuring the can withstands internal pressures during filling and transportation.