What is the Recoat Window of the Primer

The infiltration of polyurea on most substrates is not good, so in order to get better adhesion, it is necessary to apply suitable primer on different substrates to increase the adhesion of polyurea and substrate. When apply the primer, there will be an recoat window, we usually spray polyurea when the primer is tack free, in that case the solvent will be completely volatilized out, to avoid bulge of spraying polyurea.

However, you should spray polyurea before the recoat window of the primer, because beyond this time, the surface of the primer will lose its activity, and can get a good adhesion. Therefore, before use the primer, we must read the instructions carefully, and spray polyurea before the recoat window of primer to avoid failures.

Qingdao Polyswell is focusing on the research and development, production and sales of polyurea technology. We will always hold your back. If you have any questions about polyurea technology, please feel free to contact us.

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Key words: lapping process of polyurea