Then the coil is chemically cleaned and treated to prevent corrosion and ensure coating adhesion. Coatings are applied in a prime coater , sent through a curing oven , then a finish coat is applied and cured . Both coating stations can apply the same or different coatings simultaneously to both sides of the strip. An exit accumulator facilitates continuous processing as finished coils are rewound and prepared for shipment.
Manufacturers can eliminate their in-house paint lines.
Since prepainted metal is cleaned, treated, and painted while flat, rather than after fabrication, the result is a higher quality, more uniform finished product.