What should be the thickness of the powder paint layer
Powder coating is an innovative method of painting metal products, which also allows to protect it as much as possible from all kinds of negative influences. There are about 5,000 colors and shades of powder paint. They are matte and glossy, smooth and textured, with special effects, like crocodile skin or orange peel. However, a lot of powder coating process depends on the technology of powder coating and polymerization.
If you have never worked with powders, we recommend you firstly to familiarize yourself with the features of this paint and coating technology.
Well, now about what the thickness of the powder paint layer should be.
Why coating thickness is important
Incorrect coating thickness of powder paint can cause quite a lot of defects.
If you apply a lot of extra paint, the process itself may not be so economical. Because the powder will be spent more than it should. But this is not the worst thing. The fact is that too thick the coating layer can cause insufficient adhesion and, as a consequence, peeling and chipping of the coating. Due to too thick coating layer, smooth paint can get shagreen effect.
At the same time, the very thin coating layer is also not very good. In this case, some places will not be painted at all, the cover will be heterogeneous. This means that the coating will no longer be so resistant to corrosion and corrosion. Well, the look, of course, will be better.
In addition, the thickness of the powder coating affects its ability to withstand shock, hardness, flexibility, resistance to chips and scratches. In general, it is best not to experiment with the thickness of your own and follow the recommendations that paint manufacturers themselves make.
Only the optimum coating thickness can guarantee that the paint will have the stated properties and protect the product for a long time.
Recommended coating thickness
In theory, the powder particles can form a coating thickness of 50 to 400 microns. But in practice, each type of paint has recommendations on the thickness of the coating layer. And they should be adhered to in order not to run into the problems described above.
For smooth powder paints, a coating thickness of 60-80 microns is recommended.
For powder paint shagreen recommended coating thickness of 80-110 microns.
For antique powder paints, a coating thickness of 100 -120 microns is recommended.
We also recommend that you always ask the paint manufacturer what thickness of coating he recommends. As each powder manufacturer has its own technology, therefore, paints have their own peculiarities and differences.
You can adjust the thickness of the coating by adjusting the flow of powder, reducing the tension or time of spraying.