Glass Pigment Uses - How to Use Pigment for Glass in 2024?

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What are glass pigments?

Glass pigments are for coloring of colorless transparent glass. They are mainly used to improve the light transmission, decoration and aesthetic performance of glass. Depending on applications and requirements, glass pigments are divided into different types and colors.

Glass Pigments

Mica Powder for Glass

Thermochromic Pigment for Glass

Photochromic Glass Pigments

Pearl Powder for Glass

Glow in the dark glass powder

Titanium dioxide Pigment for Dye

chameleon powder

UV Powder

Use of Glass Pigment FAQs

I. Production of colored glass

Colored glass is made by applying pigments on glass surfaces. This can make glass with beautiful colors. Glass pigments are suitable for glass decoration, architectural decoration, etc.

Specific steps:

  1. Prepare color pigments and dedicated glass coatings.
  2. Apply glass coatings on glass surfaces via a
  3. Apply pigments evenly on glass.
  4. Put glass into a high-temperature furnace.
  5. Wait until glass is thoroughly cooled. Then conduct grinding, polishing, etc.

Advantages: rich and beautiful colors.

Shortcoming: use of expensive materials (e.g. gold and silver) in production, resulting in high costs.

II. Coloring of translucent glass

Translucent glass is usually used in production of daily necessities, such as glass cups. People can clearly see the colors of drinks in cups. In addition, the transparency of drinks can be protected.

Specific steps:

  1. Put a glass cup into a coloring mold.
  2. Pour the pigment into the mold to color the cup.
  3. Heat the cup in the high-temperature furnace.
  4. Wait until the cup is cooled. Then polish the surface of the cup.
  5. Finally, a translucent glass cup is made.

Advantages: Good translucent effect, bright color, smooth surface.

Shortcoming: High cost.

III. Membrane coloring

Membrane coatings are applied with special chemicals on glass surfaces, to achieve some special effects, such as shading and heat insulation. This method is often used in industrial fields.

Specific steps:

  1. Apply a membrane coating on the glass surface.
  2. Put the glass into an oven for baking.
  3. Take out the glass after heat treatment.

Advantages: Good light transmission, shading, UV resistance, etc. The membrane coating is made smooth.

Shortcomings: Complex construction and high cost.

In summary, glass coloring should be flexibly conducted based on specific applications and requirements, so that glass has more values and creative applications in various fields.

  1. Colorless and transparent glass pigments: They do not affect the transparency of glass. Instead, a thin oxide film is formed for sun protection and beautification of glass surfaces.
  2. Colored glass pigments: They make glass surfaces with different colors, such as red, yellow, green and blue. They have beautiful decorative effects and are widely used in construction.
  3. Glass pigments with gradient colors: Glass pigments with gradient colors: They make glass surfaces with deep to light colors, thus showing visual three-dimensional and transitional effects. They are mainly applied in automotive side windows, sunroom glass, etc.
  1. Glass pigments for reflective mirror: They make glass surfaces with mirror effects for reflection, shading, privacy protection, etc. They are widely used in indoor furniture and commercial decoration.

Take white glass pigment as an example:

I. Main raw materials

Main ingredients of white glass pigment include silicate and iron oxide. Other raw materials may be added as needed, such as titanium dioxide, dolomite, calcium carbonate, bauxite, etc.

II. Production steps

  1. Preparation of main materials

Mix silicate and iron oxide in proportion, add an appropriate amount of auxiliary material, and mix them.

  1. Calcination

Calcinate the mixture at 1,000℃ to 13,00℃ for 1-2h in a high-temperature furnace, until it is completely melted into a pigment.

  1. Grinding

Grind the pigment in a grinder, making the particles as fine as possible and the color more uniform.

  1. Screening

Screen the ground pigment to remove too large or small impurities, thus improving the purity of the pigment.

  1. Packaging

Pack the screened pigment in an airtight container, and keep it in a cool and dry place. Avoid direct sunlight and moisture.

III. Precautions

  1. Mix silicate and iron oxide at an appropriate proportion. Too much or little silicate and iron oxide will affect the pigment quality.
  2. Properly control the calcination temperature and time, to avoid charring or over-burning.
  3. Pay attention to the particle size and uniformity during grinding, in order to ensure the uniform color.
  4. Pay attention to sealing during packing. Prevent the pigment from moisture or contamination.

Raw materials for glass pigments are expensive, leading to some stress on the production costs of glass pigment manufacturers. Fluctuations of raw material prices have some impacts on marketing. With the increasing global environmental awareness, there are more stringent environmental requirements for glass pigment manufacturers. This is also an important challenge for glass pigment manufacturers. Despite some challenges, glass pigments have promising prospects in the market.

Main steps of glass pigment use include pretreatment, color selection, color blending, feeding and application. The quality and stability of pigments should be ensured in pretreatment. Appropriate colors should be selected according to application requirements. The properties and requirements of basic materials should be fully considered during color blending. Materials should be fed based on the application environment and requirements. Appropriate construction methods and tools should be selected as appropriate to apply glass pigments.

  1. Transparent glass pigments: They do not affect the light transmission of glass. But they have the effects of sun protection and beautification. They are applied in architectural curtain walls, glass curtain walls in public places, automotive glass, etc.
  2. Colored glass pigments: They are selected for beautiful decoration according to color requirements. They are applied in construction, home decoration, automobile, etc.
  3. Glass pigments with gradient colors: They are mainly applied in automotive side windows, sunroom glass, etc. They have visual three-dimensional and transitional effects.
  4. Glass pigments for reflective mirror: They are widely used in commercial places and home decoration. They have the effects of reflection, shading, privacy protection, etc.

How to use Thermochromic Pigments Correctly?

Thermochromic pigments are state-of-the-art products but structurally weak compared with many other pigments and dyes. To take full advantage of this product while keeping it out

How to select and use printing reflective powder?

Printing reflective powder is dedicated for surface reflection of printed products. It is often applied on glow-in-the-dark prints, outdoor supplies, toys, crafts, etc. How to select and use

10 Key Points When We Use Industrial Pigments

What are industrial pigments? Industrial pigments are for industrial products. In addition to visible colors in industrial production, they are used for product marking, anticorrosive

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