Vacuum Coating: The "Metal Texture Magician" of Cosmetic Packaging

Introduction:

What gives a plastic bottle cap its metallic texture? The answer isn't in the material itself, but in the layer of metal "steamed" onto its surface.

The competition in cosmetics has already shifted from the "contents" to the "appearance." Before consumers even get their hands on a bottle of serum to judge whether it works, the first thing they perceive is the packaging texture—whether the metallic luster is bright enough, the feel is smooth enough, and the color is premium enough.

And most of these "metallic" effects are not made of real metal. They are created by coating an ultra-thin metal film of 50–100 nanometers onto the surface of plastic or glass. In the industry, this is called vacuum coating, a process belonging to PVD (Physical Vapor Deposition).

In 2025, according to data from 24ChemicalResearch, the global market for UV metallized bottle caps and closures is approximately USD 1.32 billion, and is projected to grow to USD 2.09 billion by 2032. The global plastic PVD (Physical Vapor Deposition) market is also continuing to expand, with cosmetic packaging being one of its core application areas.

Author: Xiao Caizi
Creative collaboration: Deepseek

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Process Definition: Giving Plastic "Haute Couture"

We've already covered the basics of packaging materials thoroughly. Starting today, let's talk about the process series for cosmetic packaging. In this first article, we'll discuss the process that gives plastic a "metallic soul"—vacuum coating.

Those perfume caps, lipstick tubes, and powder compacts you've handled that look like metal, feel like metal, yet are surprisingly light in your hand—the secret behind them is vacuum coating.

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