Industrial News

Why is the powder coating of the security screen easy to peel off?

Hebei MAISHI is a professional security screen manufacturer in China. We use good quality powders, and ensure the good mesh surface. For some screens, the powder coating is easily peeled off. So what is the reason?
 
1. The quality of the powder is not good
The bad powder quality means the particle size of the powder is not the same. That will make the powder not sufficiently melted when it is at high temperature, so the powder absorption force becomes smaller.
 
2. Temperature is not enough
After the good quality powder is sprayed on the security screen, the screen should be sent to the oven. Before that, the temperature in the oven should be above 200 degrees. If the temperature is less than 200 degrees, the powder can not be sufficiently melted when the screens are in the oven, which will make the powder can not be fixed onto the mesh very well. So the powder will be very easy to peel off later.
 
3. The mesh surface is dirty
Before spraying, the screen must be clean and sanitary, the surface can not have dust or grease. The unsanitary surface will also affect powder absorption.
 
4. The mesh wire is round
As the shape of the wire is round, the absorption effect of the spraying on the arc shape is not as good as on the plate.
 
So when painting the powder coating on the security screens, workers need to pay much attention to the above aspects.
MAISHI MFG has been in security screen production for many years, we have professional workers to control the steady good quality. If any need, welcome to send an inquiry to sales@maishimfg.com