What is the difference between sedimentation and coating of cosmetic containers？

The difference between sedimentation and coating of cosmetic containers mainly lies in the formation process, application technology, and final effect. ‌
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Deposition usually refers to one of the PVD coating processes, namely physical vapor deposition. This is a process of evaporating the target material and ionizing the evaporated substance and gas through low voltage and high current arc discharge technology under vacuum conditions, and then using the acceleration effect of the electric field to deposit the evaporated substance and its reaction products on the workpiece. The PVD coating process includes steps such as cleaning, pretreatment, coating, quality control, and precision machining, aiming to form a thin film with excellent durability, wear resistance, and corrosion resistance, while increasing aesthetics. This coating process is carried out in a vacuum chamber, which helps prevent vaporized materials from reacting with any air or other gases, thereby ensuring the quality and performance of the coating.
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Coating refers more broadly to the use of different techniques to cover materials on the surface of an object in order to improve its performance or appearance. In the production of cosmetic containers, coatings can be achieved through electroplating, spraying, screen printing, and other methods. For example, electroplating is a surface processing method that deposits metal cations in the plating solution on the surface of the substrate metal through electrolysis, forming a coating. Spraying is the process of dispersing paint into fine droplets using a spray gun or disc atomizer, and applying them to the surface of the object being coated. These technologies are used to change the surface smoothness and stress state of containers, or to increase the aesthetics and functionality of containers.