Surface treatment process of aluminum

     Aluminum metal is a common material widely used in cosmetic packaging. However, the surface of aluminum metal is susceptible to corrosion and oxidation, so surface machining and treatment are required to improve its surface properties, durability and aesthetics. Aluminum surface treatment processes mainly include several methods such as mechanical processing, chemical treatment, electrochemical treatment and coating treatment.

    Common machining methods include polishing, grinding, cutting and sanding. These methods can remove burrs, oxidized skin and stains on the surface of aluminum materials, making their surfaces smoother, flatter and more beautiful.

    Common chemical treatment methods include acid washing, alkali washing, electrolytic polishing and anodizing. These methods can remove the oxidized skin, stains and corrosion on the surface of aluminum material, and at the same time enhance its properties such as corrosion resistance, abrasion resistance and heat resistance. Anodic oxidation can enhance the physical properties of aluminum, and can also color the surface of aluminum to increase its aesthetics, which is suitable for use in high-grade packaging, such as aluminum airless bottles, perfume caps, cream bottle caps, jar lids, aluminum cream jar and other cosmetic packaging.

    Common electrochemical treatment methods include electroplating, electrolytic deposition and electrochemical polishing. These methods can form a metallic or non-metallic protective layer on the surface of aluminum material to enhance its properties such as corrosion resistance, wear resistance and electrical conductivity.

    Common coating treatments include spraying and roll coating. These methods can form a protective layer on the surface of aluminum materials to enhance its properties such as corrosion resistance, wear resistance and aesthetics.