Going to great lengths: Application systems for powder coating long parts
Powder coating parts as long as 25 feet has always been a distinct challenge. Several options are available for powder coating long parts, but the basic difference comes from whether the part runs in a horizontal or vertical orientation. This article suggests ideas to help you determine which strategy is best for your company and how to put a system together based on your production requirements, available floor space, and capital costs.
If you've been operating a powder coating shop for a while, you've probably seen parts in all sizes and shapes come through your door. To meet the needs of a diverse base of customers, you've likely taken on jobs that test the limits of your application system. Long parts are no exception. These parts - some as long as 25 feet - are usually aluminum extrusions and have traditionally been anodized or liquid-coated with a two-step process. In the US, most finishers use liquid coatings, but in Europe, virtually all of the coatings applied are a one-step powder coating. Environmental considerations have played a large role in the use of powder coatings in Europe, along with advancements in powder application equipment and formulations. Even the more difficult architectural applications in Europe have moved to powder coatings.