How to make plastic cosmetic container with metalization treatment?
Plastic cosmetic container commonly adopts various surface treatment processes, such as metalization finishing, UV coating, matte finishing , and injection finishing.Today, we will share one of these surface treatment processes -metalization.

Plastic Cosmetic Container Molding
- Material Selection: Choose the plastic material for the plastic cosmetic container ,normally it is ABS,PET,PP etc
- Molding Process: Manufacture the base of plastic cosmetic packaging (e.g., lipstick tube, cream jar, mascara tube,eyelash tube ,lotion bottle,plastic cosmetic jar etc.) using injection molding or blow molding, depending on the shape and design.
- Cleaning: Ensure the surface is clean to prevent any defects in the metalization process.

Surface Preparation For Metalization Plastic Cosmetic Container
- Cleaning: Thoroughly clean the base of plastic cosmetic container to remove any grease, dust, or other contaminants. This is typically done using a combination of ultrasonic cleaning, chemical cleaning, or plasma treatment.

- Surface Activation: Depending on the type of plastic cosmetic packaging, the surface may need to be activated. This can be done using methods like corona treatment or plasma treatment to improve adhesion.
Metalization Process For Plastic Cosmetic Container
- Vacuum Metallization: This is the most common method for metalizing plastic cosmetic container. The plastic cosmetic containers are placed inside a vacuum chamber where a thin layer of metal (usually aluminum) is vaporized and deposited onto the surface of the plastic cosmetic container. The vacuum environment ensures the metal adheres evenly and creates a shiny metallic finish.
- Vacuum Chamber: The plastic cosmetic container is placed in a vacuum chamber, and
- the metal (typically aluminum) is heated until it evaporates.
- Metal Vapor Deposition: The metal vapor then condenses onto the plastic cosmetic container surface, forming a thin but durable metallic layer.
- Cooling: The plastic cosmetic container is then slowly cooled to solidify the metal layer.
Additional Coatings For Plastic Cosmetic Container
- Protective Coatings: Sometimes, a protective coating is applied on top of the metalized layer to prevent scratches, tarnishing, or other damage. This can be a clear coat or lacquer that also adds to the durability of the finish.
- Color Coatings: If the plastic cosmetic packaging requires specific colors, additional layers of paint or coatings can be applied after the metalization. These are often done using screen printing or pad printing.
Post-Metalization Treatment For Plastic Cosmetic Container
- Quality Inspection: The metalized plastic cosmetic packaging is inspected for defects such as peeling, bubbling, or inconsistent metal coverage.
- Assembly: After successful metalization, the packaging can be assembled with components like caps, pumps, or applicators, depending on the design.
Packaging & Shipping For Plastic Cosmetic Container
- Once the plastic container has passed all quality checks, it is ready for shipping to clients or for further processing, like filling with cosmetics.
Key Considerations:
- Adhesion Strength: The adhesion of the metal layer to the plastic is critical. If the surface preparation or metalization process is not done correctly, the metal layer can peel off.
- Aesthetic Control: Metalized finishes can vary from a glossy, mirror-like effect to a more matte or frosted finish, depending on the type of metal used and the process parameters.
- Sustainability: If sustainability is a concern, you can explore options like water-based coatings or alternatives to traditional aluminum.
If you are finding a plastic cosmetic container supplier, please contact us.
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