Kaolin filler for plastic and polymer compounding
Applications / Plastic & Polymer

Mineral solutions for plastic & polymer manufacturing

Sree Sai Mineral Industries supplies engineered kaolin clay that functions as a functional filler in plastic and polymer compounding — from rigid and flexible PVC to masterbatch, films and engineering plastics.

Our kaolin grades deliver the stiffness, dimensional stability and barrier performance that polymer compounders demand, backed by an in-house quality laboratory and a Certificate of Analysis with every batch.

Plastic & Polymer Applications

Where our kaolin is used

PVC Compounds

  • Rigid PVC Pipes & Fittings
  • Flexible PVC
  • Wire & Cable Insulation
  • PVC Profiles

Masterbatch & Films

  • Filler Masterbatch
  • Packaging Films
  • Polyolefin Compounds
  • Injection Moulding Compounds

Engineering Plastics

  • Automotive Plastic Components
  • Cable Compounds
  • Technical Moulded Parts
  • Specialty Polymer Compounds
Why Kaolin

The role our kaolin plays in your polymer compound

Stiffness & Rigidity

Mineral reinforcement improves flexural modulus and rigidity in compounds.

Dimensional Stability

Uniform particle distribution supports consistent shrinkage control.

Barrier Properties

Platelet morphology improves moisture and gas barrier performance in films.

Low-Impurity Consistency

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

Featured Product

Sree Sai PolyShield Engineered Kaolin

Technical Data Sheet Engineered Kaolin

Sree Sai PolyShield is an engineered kaolin filler that improves stiffness, dimensional stability, surface finish and processing performance in thermoplastics and thermosets.

Chemical Composition (Typical)
ParameterTypical Value
Silicon Dioxide (SiO₂)46–48%
Aluminium Oxide (Al₂O₃)37–39%
Iron Oxide (Fe₂O₃)≤ 0.40%
Titanium Dioxide (TiO₂)≤ 0.50%
Physical Properties (Typical)
PropertyTypical Value
Brightness88–90%
Moisture< 0.5%
Median Particle Size (D50)2–3 µm
Oil Absorption32–40 g/100g
Product Advantages
Improved rigidity Excellent dimensional stability Better surface finish Reduced shrinkage Enhanced processing Excellent dispersion
Grade Selection

Five grades — from PVC pipes to specialty polymer compounds

Product Grade Brightness (%) D50 (µm) Moisture (%) Primary Application
SS-PL 100 85–87 5.0 < 1.0 PVC Pipes & Fittings
SS-PL 200 87–89 4.0 < 0.8 Injection Moulding
SS-PL 300 89–90 3.0 < 0.8 Masterbatch
SS-PL 400 90–91 2.5 < 0.5 Engineering Plastics
SS-PL 500 91–92 2.0 < 0.5 Specialty Polymer Compounds

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

FAQ's

Plastic & Polymer Kaolin — Common Questions

Kaolin acts as a functional filler that improves stiffness, dimensional stability, surface finish and barrier properties in PVC and polymer compounds, while offering a cost-effective partial replacement for resin.

Our finer, low-moisture grades (D50 2–3 microns) are recommended for masterbatch and film applications requiring excellent dispersion and a smooth surface finish.

We supply in 25 kg and 50 kg HDPE bags, 1-tonne jumbo (FIBC) bags, and bulk container loading for larger polymer compounding plants.

Looking for the right kaolin filler for your polymer compound?

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Sree Sai Mineral Industries

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