What is the injection coloring for plastic cosmetic packaging?

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As a best plastic cosmetic packaging solution in China, we produce and wholesale various cosmetic packaging to the market.

Today ,we would like to introduce one of the surface treatment -injection coloring for cosmetic packaging manufacturing.

What is the injection coloring for plastic cosmetic packaging?

Injection coloring for producing cosmetic packaging is a process used to add color directly into the plastic during the injection molding phase. Instead of applying color to the surface of the container afterward (such as with spray painting or UV coating), the color is mixed into the raw plastic resin before it is injected into the mold. This creates a solid, uniform color throughout the entire container.

How It Works when produce plastic cosmetic packaging?

Add Color Concentrate when produce plastic cosmetic packaging 

A concentrated colorant (often in the form of a masterbatch, which is a mixture of pigments and polymers) is blended with the plastic resin. This masterbatch can be in various forms, such as pellets, liquids, or powders.

Injection Color For Cosmetic Packaging Production

Make a Injection Molding For Plastic Cosmetic Packaging

The colored resin is then injected into the mold cavity under high pressure, forming the container (e.g., a lipstick tube, jar, or bottle) in the desired shape. The color is now fully integrated into the plastic material.

Cooling & Solidification

After injection, the container is cooled and solidified. The color remains uniform throughout the plastic, even in the core of the container.

Types of Injection Coloring

Solid Coloring: The color is consistent throughout the entire piece, and the plastic has a single, uniform color.

Transparent or Translucent Coloring: The resin may include transparent or translucent pigments, allowing light to pass through the container. This is common for products like skincare bottles or lip gloss tubes.

Advantages of Injection Coloring For Plastic Cosmetic Packaging

Durability: Since the color is integrated into the plastic cosmetic packaging material itself, it’s less likely to scratch, peel, or wear off compared to surface treatments like spray coatings.

Uniformity: The color is evenly distributed, providing a consistent finish throughout the entire cosmetic  container, including areas that may be hard to reach with other coloring methods.

Customization: It allows for highly customizable colors, effects, and even translucency for cosmetic packaging, which can match a brand’s color palette or design theme more effectively.

Cost-Effective: For high-volume production, injection coloring can be more cost-efficient compared to post-production surface treatments to plastic cosmetic packaging , as it eliminates additional processes.

Environmentally Friendly: Using color directly in the molding process can reduce the need for additional chemicals, coatings, or paints, making it potentially more eco-friendly for plastic cosmetic packaging.

Common Applications:

  • Lipstick Tubes&Lip Balm Tube Where a solid, consistent color is needed.
  • Mascara Tubes &Eyeliner Tube : For custom color options that stay durable over time.
  • Cream Jars & Lotion Bottles &Cosmetic Cap: Often designed with clear, translucent, or pastel hues for skincare products.
  • Cosmetic Compact Powder Case: Especially when a sleek, high-quality finish is needed, and sometimes a pearlized or metallic effect is desired.

This technique is particularly popular for cosmetic packaging,  where durability, aesthetic appeal, and branding consistency are important. Are you thinking of using injection coloring for custom cosmetic packaging products? Please contact us.

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