Paint the plastic shell?

The field of plastic shell painting is very extensive, involving all aspects of life. However, in the actual plastic shell coating process, there are paint shedding phenomena, such as nonpolar polypropylene PP material, low surface energy PA nylon material, PEI plastic steel, TR90 material, glass fiber reinforced substrate and so on. Moreover, the adhesion between paint and substrate is not enough, which leads to the problems of poor adhesion of paint film and insufficient paint peeling.

So how to solve the problem of paint falling off the plastic shell? First of all, the interlayer adhesion between paint film and substrate is an important factor for the coating to firmly adhere to the surface of material, so improving the adhesion between paint and plastic shell surface is the most important thing and an important way to solve the problem of paint peeling.

The primer adhesion treatment agent developed by Jingsheng Treatment Agent can improve the polarity and wettability of the substrate by spraying on the surface of the plastic shell, and form a chemical bond by interacting with the paint film, so that the paint can firmly adhere to the substrate, which solves the problem of paint falling off the plastic shell. When the 100 grid adhesion test is carried out, the adhesion can reach 5B.

Application case of raw polypropylene treatment agent