info@ualchina.com
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 State-of-the-art pre-treatment and coating technology |
| 1. Tension levelling |
| Tension levelling at the beginning of the manufacturing process guarantees an absolutely flat product. |
| 2. Cleaning of strips |
| Perfect cleaning, removal of oxides, dirt and lubricants. |
| During the cleaning process, the aluminium strip is cleaned within different zones.Cleaning is thus more |
| efficient than conventional technologies and water can be re-used. |
| 3. Pre-treatment |
| Pre-treatment is the key of the coil coating process. The pre-treatment is needed to increase the corrosion |
| resistance and to ensure paint adhesion. During pre-treatment a conversion layer is chemically built up on the |
| surface of the aluminium strip. |
| 4. Coil coating |
| The paint is applied using rollers. All paint system is geared to match the requirements of the application. |
| To achieve different results, different paint systems are used. The reverse side always has a protective lacquer |
| 5. Curing |
| Depending on the paint system, the curing temperature lies between 200-300°C. |
| In order to protect the environment as well as possible, the solvent vapour is used to heat the oven without gases |
| escaping from the closed system. |
| 6. Continous quality control criteria monitored during the production |
| * Color * Paint hardness |
| * Paint thickness * Paint adhesion |
| * Gloss * Formability |
| 7. Exit accumulator and re-coiling |
| The coated aluminmum coil will be wind up and is ready for further processing |
|
Customer specified individual cut sizes of coils for sheets or strips |
| 8. Packaging the finished product |