During corona discharge, a large amount of ozone is generated. Ozone is a strong oxidant that oxidizes molecules on the surface of plastics to produce carbon-based compounds and peroxy compounds. In addition, corona treatment can also remove oil stains, water vapor and dust, etc. After the above physical and chemical modifications, it can significantly improve the wettability and adhesion of the plastic surface.
influences:
1. Corona discharge is carried out in air, so air humidity will affect the treatment level. The air humidity is high, and the treatment effect is often not ideal.
2. The degree of corona treatment will disappear with the extension of storage time. The speed of fading is related to various factors such as storage environment temperature and material thickness.
The higher the storage temperature, the faster the fading speed. Generally, the corona effect of thicker materials fades faster than that of thinner ones.
After treatment, it is best to use as soon as possible to get the best wettability and adhesion.