Paper industry illustration

Get to Know Kaolin’s Benefit to Various Industries

Many types of clay exist around the world. One of the best-known clay is the kaolin. Have you heard anything about kaolin? In fact, kaolin is used extensively in a number of industries. This article will explain how kaolin can benefit various industries.

A brief overview of kaolin

Kaolin mineral illustration

Kaolinite is a clay mineral, with the chemical composition Al2Si2O5(OH)4. It is an important industrial mineral that has been used in many industries. Rocks that are rich in kaolinite are known as kaolin or china clay.

The term kaolin is occasionally referred to as the antiquated term lithomarge, from the ancient greek litho- and Latin marga, meaning ‘stone of marl’. Presently the name lithomarge can refer to a compacted, massive form of kaolin.

Below are industries that have been covered by kaolin for their respective industrial purposes:
1. Paper Industry
2. Rubber Industry
3. Paint and Coating Industry

Paper industry: Paper filling and coating

White paper

The most important qualities of kaolin for the paper industry are often observed in its properties. Whiteness, low viscosity, non-abrasiveness, regulated particle sizes, and flat hexagonal plates are examples.

The paper sector is the greatest single consumer of kaolin for paper filling and coating. Kaolin is used since kaolin makes paper goods print better, whiter, and smoother. The inclusion of kaolin as a filler in the sheet’s interstices increases ink receptivity and opacity.

Sharp photographic images and vibrant printed colors are made possible by the kaolin used to coat the surface of the paper sheet. Kaolin makes up over a third of the weight of today’s glossy sheet magazines.

The feature of opacity is particularly essential in the paper industry. The flow properties of kaolin clays, especially the kaolin coating clays used in the paper industry, have a big impact. It will affect how thick the coating is, how smooth it is, and how it looks on the coated paper.

A coating pigment for the paper industry would be white. Besides white, it disperses easily in water, has low viscosity, is soft, has a tiny particle size, and is thin plate-shaped. Nature has made a mineral called kaolin that has almost all of the properties listed above.

Rubber industry: Kaolin as strengthener filler for rubber-based goods

Rubber illustration

In recent years, kaolin has made substantial contributions to the rubber sector. Due to its properties, the substance is mostly employed as a filler in numerous rubber-based goods. In the rubber industry, filler serves as a strengthening ingredient. It increases the rubber product’s strength and durability.

Because of the following characteristics, the use of kaolin in the rubber business is considered a breakthrough:

  • It adds more than enough mechanical support to the mixture.
  • It increases the rubber’s strength and stiffness.
  • It improves the rubber product’s electrical insulating capabilities.
  • It has the ability to withstand abrasion.
  • It has a higher temperature resistance.
  • It does not absorb a lot of water.

Paint and coating industry: Low-cost mineral

White paint

In the paint industry, kaolin is one of the most important fillers. Industrial kaolin has a substantial impact on the paint’s quality and performance while also lowering the cost of formulation. It also offers a number of additional benefits. Benefits included enhanced film development, quick collapse prevention, greater weather resistance, and a lower rate of moisture flow.

Kaolin, on the other hand, is an essential component of the coatings industry. Providing a cost-effective and efficient extender, the kaolin may aid in lowering the production costs of architectural paints and coatings. Such properties and features exist in kaolin for various industries.


With many features existing in kaolin, kaolin can be used in numerous industries. Low-cost material with many features is favorable to be used for larger applications in the industry.

Should the paper, rubber, or coatings industry is your industry, then kaolin is the answer for your industry solution.

Kaolin is often used as a filler or in the coating process. Thus, these kinds of applications are suitable in the paper, rubber, or coating industry.

Tradeasia International as a global kaolin supplier provides kaolin in bulk and various grades of kaolin for industries solutions.

Get kaolin and other clay minerals suitable for paper and coating applications in bulk with different grades and packaging.

Get more about the detail of kaolin we provided on our industry website.

By Muhammad Fauzi Azhar, Student Academy in Tradasia Academy Batch 2, Tradeasia International

Proofread and reviewed by Muhammad Derry Luthfi Yudhi, Content Support, Tradeasia International

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