The coating machine is mainly used for coating. There are mainly two types of induction evaporation coating and magnetron sputtering coating. For the induction evaporation coating machine, the target is usually heated to evaporate the surface components in the form of atomic groups or ions.
Thickness uniformity mainly depends on:
1. Substrate surface temperature;
2. Evaporation power and rate;
3. Vacuum degree;
4. Coating time.
Vacuum coating is a technology that realizes continuous coating on flexible substrates by applying different methods under vacuum. It covers vacuum acquisition, electromechanical control, high-precision transmission and surface analysis. The key to its operation is to first ensure the quality of the coating, and on this premise, then increase the winding rate, control the stability of the coating and implement online monitoring. Roll-to-roll technology has the advantages of low cost, easy operation, compatibility with flexible substrates, high productivity, and continuous multi-layer coating.