7. Station: Drying

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The drying oven is basically divided into 3 zones (2 heating zones and 1 cooling zone). The heating zones serve to heat the cans and to evaporate the fluid constituents as well as to cross link the coating and the printing ink. The air in the heating zones is recirculated to reduce the amount of fresh air which has to be heated.

The exhaust air is supplied to the thermal incineration unit where the exhaust gases from the oven are incinerated to carbon dioxide and water without any residue. After leaving the heating zone, the cans are conveyed to the cooling zone and are adapted to the ambient temperature.

1. Blanking and Deep-drawing 2. Wall-ironing and end forming 3. Trimming 4. Washing 5. Outside coating 6. Printing 7. Drying 8. Initial internal coating	9. Necking in 10. Flanging 11. End coating 12. Second internal coating 13. Testing for holes and flange cracks 14. Testing for internal defects 15. Palleting