5. Station: Outside coating

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The cans are coated on the outside as protection against corrosion and in order to apply a decorative design. White, gold or transparent coating as well as aluminium-coloured coating can be used according to customer specifications. Generally the coatings are water-based.

The cans are spaced by an intake wheel and drawn on to the coating mandrel of the mandrel wheel by means of a vacuum. They are then set in rotation around their own axis by the rotation belt. The coating film on the coater cylinder is then transferred to the cans positioned on the rotating coating mandrels. The coated cans are then blown off the coating mandrels and transported to the drying oven on a magnetic conveyor belt. The coating is pumped from a coating container to the engraved cylinder which transfers the appropriate quantity to the rubber-coated coating cylinder from where it is transferred to the cans.

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