Kaolin for paper coating and filling
Applications / Paper

Mineral solutions for paper manufacturing

Sree Sai Mineral Industries supplies high-purity hydrous kaolin clay engineered for paper coating and filling — from everyday writing and printing paper to premium coated art paper and specialty tissue grades.

Our kaolin grades deliver the brightness, opacity, printability and surface smoothness that modern paper mills demand, backed by an in-house quality laboratory and a Certificate of Analysis with every batch.

Paper Applications

Where our kaolin is used

Coating Grade Paper

  • Art & Gloss Paper
  • Board Coating
  • Matte Coated Paper
  • Label & Pigment Coating

Filler Grade Paper

  • Writing & Printing Paper
  • Copier Paper
  • Kraft & Packaging Paper
  • Newsprint

Tissue & Specialty Paper

  • Tissue & Napkin Paper
  • Specialty & Décor Paper
  • Carbonless Paper
  • Bulk Enhancement Grades
Why Kaolin

The role our kaolin plays in your paper formulation

Brightness & Opacity

High refractive index and platelet structure boost sheet brightness and opacity.

Printability & Ink Receptivity

Controlled particle size distribution supports crisp, uniform ink lay-down.

Rheology & Runnability

Optimised viscosity behaviour for smooth coating slip application at machine speed.

Low-Impurity Consistency

Batch-to-batch uniformity verified in our in-house QC lab.

Featured Product

Sree Sai PaperBright Hydrous Kaolin

Technical Data Sheet Hydrous Kaolin

Sree Sai PaperBright is a premium hydrous kaolin developed for paper coating and filling applications. It enhances brightness, opacity, printability and surface smoothness while improving machine runnability.

Chemical Composition (Typical)
ParameterTypical Value
Silicon Dioxide (SiO₂)45–47%
Aluminium Oxide (Al₂O₃)37–39%
Iron Oxide (Fe₂O₃)≤ 0.35%
Titanium Dioxide (TiO₂)≤ 0.50%
Loss on Ignition (LOI)13–14%
Physical Properties (Typical)
PropertyTypical Value
Brightness90–92%
Moisture< 1.0%
pH (10% Suspension)6.5–7.5
Particle Size (< 2 µm)80–90%
Oil Absorption40–50 g/100g
Product Advantages
High brightness Excellent opacity Superior printability Smooth paper finish Improved sheet formation Enhanced ink receptivity
Grade Selection

Five grades — from kraft paper to premium coated paper

Product Grade Brightness (%) Particle Size (<2 µm) Oil Absorption (g/100g) Primary Application
SS-PP 100 85–87 60% 38 Kraft & Packaging Paper
SS-PP 200 87–89 70% 40 Writing & Copier Paper
SS-PP 300 89–91 80% 43 Printing Paper
SS-PP 400 91–92 85% 46 Tissue & Specialty Paper
SS-PP 500 92–94 90% 48 Premium Coated Art Paper

* Typical values provided for guidance only. Custom grades can be developed to meet specific process and product requirements.

FAQ's

Paper Kaolin — Common Questions

Our high-brightness hydrous grades (around 90–92% brightness, fine particle size with 80–90% below 2 microns) are formulated for coating slips used in art paper, board and premium printing paper.

Yes. Our filler grade kaolin improves brightness, opacity and bulk in tissue, writing and copier paper while offering a cost-effective alternative to other fillers, without affecting sheet formation.

We supply in 25 kg and 50 kg HDPE bags, 1-tonne jumbo (FIBC) bags, and bulk container loading for larger paper mill requirements.

Seeking the right kaolin grade for your paper coating or filling process?

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Sree Sai Mineral Industries

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