American Metal Coatings (AMC) stands out in the industry for its innovative approach to powder coating, particularly in its use of a combined Infrared (IR) system with a bake oven. This method offers numerous advantages, resulting in a superior and more efficient powder coating finish.

Powders utilized in AMC’s combined IR-Convection systems or low to medium intensity IR-only systems are carefully selected for their compatibility with the curing process. These systems typically offer comparable cure times, ranging from 8 to 20 minutes. Fast-curing powders, requiring temperatures of 400°F for 5 minutes or less, are particularly well-suited for high or high to medium intensity IR systems. During this process, the dwell time in front of the emitters typically ranges from 30 to 90 seconds.

One of the key advantages of using IR in powder coating is its ability to provide fast heat-up rates, which can significantly enhance the appearance of the coating. For high gloss coatings, the result can be an even higher gloss finish. However, for low gloss systems, predicting gloss levels can be challenging. To address this, AMC conducts trial runs or evaluates lab samples online to ensure the desired finish is achieved. Additionally, rapid curing leaves limited opportunity for flow, making low viscosity in the melt crucial to overcome issues like orange peel.

The color of the coating can also impact the cure process, albeit to a lesser extent. Black coatings, for example, tend to absorb radiant energy more readily, while whites reflect it. This means that adjustments to the oven may be necessary to ensure uniform curing, depending on the color of the coating.

American Metal Coatings’ use of a combined IR system with a bake oven offers several advantages, including faster curing times, enhanced appearance, and improved efficiency. By carefully selecting powders and utilizing innovative curing methods, AMC continues to deliver superior powder coating finishes to its customers.