Powder over Liquid Paint
Can you tell me whether powder coating can be applied to painted components? I want to cover uncoated areas of pieces after electro-galvanneal is sprayed with zinc-rich paint.
Q. Can you tell me whether powder coating can be applied to painted components? I want to cover uncoated areas of pieces after electro-galvanneal is sprayed with zinc-rich paint. L.Q.
A. Many liquid coatings will not take high temperature. The result is that the liquid coating will bubble under the powder and create defects in the film. So most of the time it is not possible to apply powder over wet paint. Some wash primers with zinc are OK, but many liquid paints will not work under powder. The powder may adhere to a thermally cured liquid also but it is not commonly done. Test a sample to see if the liquid paint and powder will work together.
Related Content
-
Masking Solutions Provider CFS Dramatically Expands Capabilities and Capacity
Custom Fabrication & Supplies (CFS) completed a new plant expansion packing 10 times the capacity into twice the space. It dramatically enhances the supplier’s custom capabilities to provide extremely precise and cost-effective masking solutions.
-
Products Finishing Reveals 2023 Qualifying Top Shops
Each year PF conducts its Top Shops Benchmarking Survey, offering shops a tool to better understand their overall performance in the industry. The program also recognizes shops that meet a set of criteria to qualify as Top Shops.
-
Curing Oven Basics
Simply heating up the substrate does not cure the coating. There are many variables to consider when choosing the best cure oven for your application...
