Home / Kaolin Grades / Paper
Paper Kaolin (Filler & Coating)
Coating pigment for printing & writing papers and board; paper filler
Paper grade
Overview
Fine, bright kaolin for paper coating (gloss, smoothness, printability) and as an economical filler. Coating grades need high brightness, very fine particles, low grit and good high-solids rheology.
- High ISO brightness and fine particle size for coating
- Low 325-mesh grit to protect blades and wires
- Good high-solids rheology (Brookfield viscosity)
- Economical filler grades for opacity and printability
Free samples available on request. Packaging: 25 kg bags · 1 t jumbo bags · bulk.
Typical key parameters
| Parameter | Unit | Typical reference |
|---|---|---|
| ISO brightness (R457) | % | 85 – 92 |
| Particles < 2 µm coating ≥ 80; filler 40–70 | % | 80 – 98 |
| Median particle size D50 | µm | 0.3 – 1 |
| 325 mesh (45 µm) residue | % | ≤ 0.05 |
| Fe₂O₃ | % | ≤ 1 |
| TiO₂ | % | ≤ 1 |
| Brookfield viscosity (70 % solids, 100 rpm) | mPa·s | ≤ 500 |
| pH (slurry) | – | 4.5 – 7.5 |
| Moisture (dry product) | % | ≤ 1.5 |
Typical reference values — final specs per customer agreement. Values reflect typical ranges published for this application; test methods and tolerances are agreed per order.
Other kaolin grades
Need a sample or a quote?
Free samples available on request. Build your spec in two minutes and send it via WhatsApp or email.