World of Cans
The IC Spray Machine and Internal Bake Oven (IBO)
In this video, we're going to talk about the IC spray machine and the internal bake oven (IBO).
Internal Coating Process
IC stands for internal coating, which is sprayed on the inside of the can. The purpose of this coating is to protect the beverage from coming into contact with the metal, preventing corrosion of the aluminum and contamination of the beverage. Each can line typically features multiple IC spray machines, positioned next to each other in a setup known as a spray bank.
Cans are gravity-fed from the upper level into the IC spray machines. They are transferred into the spray machine via an indexing star wheel, which operates in a start-and-stop manner. Inside the star wheel, cans are held by vacuum on spinning chucks.
Cans are gravity-fed from the upper level into the IC spray machines. They are transferred into the spray machine via an indexing star wheel, which operates in a start-and-stop manner. Inside the star wheel, cans are held by vacuum on spinning chucks.
Spray Application
Most spray machines are equipped with two individual spray guns. Each gun is responsible for spraying specific portions of the can—one for the top and the other for the bottom. There is some overlap in the spray patterns to ensure complete coverage.
Before entering the IC spray machine, a colored dot of ink is often applied to the dome of the can. Each machine uses a different color of ink, which aids in troubleshooting should any issues arise.
Once the cans are sprayed, they exit the IC spray machine through a gravity track.
Before entering the IC spray machine, a colored dot of ink is often applied to the dome of the can. Each machine uses a different color of ink, which aids in troubleshooting should any issues arise.
Once the cans are sprayed, they exit the IC spray machine through a gravity track.
Internal Bake Oven (IBO)
After leaving the IC spray machine, the cans proceed to the internal bake oven (IBO). This gas-powered oven uses circulating air to cure the internal coating and permanently set the external decoration and overvarnish on the outside of the can.
Once the cans exit the IBO, the internal coating is fully cured, and the external decoration is securely set, ready for the next stages of production.
Once the cans exit the IBO, the internal coating is fully cured, and the external decoration is securely set, ready for the next stages of production.
