1. Cup Forming
The process starts with an aluminum coiled sheet which is fed through a press that punches out
shallow cups. |  |
2. Redrawing & Ironing
Cups are fed into an ironing press where successive rings redraw and iron the
cup and reduce sidewall thickness to get a full length can. The bottom is domed
to obtain strength required to withstand internal pressure. |
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3. Trimming
Cans are spun as a cutting tool trims the rough shell from the inside. |
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4. Cleaning
The cans are cleaned and pre-treated for decoration and inside coating.
- Pre-clean with water rinse
- Clean with commercial cleaner
- Cold water rinse
- Conditioning
- Cold water rinse
- Deionized water rinse
- Drying
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5. Printing & Varnishing
Cans are rolled against a rubber cylinder to print up to four colors simultaneously, then moved
to another station where a clear protective overvarnish is applied. |
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6. Bottom Varnishing
Cans are conveyed past an applicator that applies protective varnish to the bottom. |
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7. Baking
Cans wind through a conveyor in an oven to dry the printing. |
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8. Inside Spraying
A specially selected coating is sprayed on the inside of the cans. |
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9. Baking
Cans are conveyed through a tunnel oven that bakes and cures the inside coating. |
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10. Necking and Flanging
Cans are necked-in at the top to reduce can diameter and flanged to accept the end. |
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11. Light Tester
Clean cans are cycled through a light tester that detects pin holes and rejects defective cans... |
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12. Palletizing
After final inspection cans are palletized for shipments to the customer... |
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| End-Making |
1. Stamping
Ends are stamped out of pre-coated aluminum coil. Compound is added to assure a perfect seal between can and end at the customer’s plant. |
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2. Rivet Making, Scoring and Tabbing
Ends are fed through a high precision press where rivet making, scoring, and tabbing occur in consecutive operations. |
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3. Shipping
Ends are bagged and placed on skids for shipment to the customer. |
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