Industrial Applications

Kaolin for Paper

Improving printability, gloss, and opacity while reducing pulp costs.

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Kaolin for Paper

Paper consists of a mesh of cellulose fibers. However, these fibers leave microscopic voids and rough surfaces that absorb too much ink and allow light to pass through (low opacity).

Kaolin acts as a functional filler and coating. Its fine, plate-like particles slot perfectly into these fiber voids. This creates a smoother surface for sharper printing and scatters light to increase opacity, allowing you to use thinner paper without see-through issues.

  • Increases Brightness (L* > 92%)
  • Reduces expensive wood pulp usage
  • Extends machinery life (low abrasion)

Microscopic View: Fiber Filling

Ink sits on surface (High Holdout) Pulp Fiber Mesh Kaolin Particles

Kaolin platelets creating a smooth printing surface

Performance Characteristics

92% Brightness

Ensures bright, high-contrast paper suitable for commercial printing.

High Fineness

Ultra-fine particles for superior gloss and smooth tactile feel.

Low Abrasion

Our soft kaolin protects your expensive wire mesh and cutting blades.

Recommended Grades

Selected grades for paper manufacturing, from filler-grade bulk applications to premium coated paper and specialty thermal grades.

UT-WHITE High Brightness Kaolin

UT-WHITE

A cost-effective filler grade that adds bulk and opacity to newsprint and paperboard. Its fine particle size improves formation and printability without compromising runnability on high-speed paper machines.

SiO272.2%
Al2O313.7%
Whiteness96.6%
pH Value8.0
Oil Adsorption (g/g)0.468
Median Size (D50)4.571 μm
Particle Size400-1200 Mesh
Download Spec Sheet
UT-WASH Precision Kaolin
Coming Soon

UT-WASH

A high-brightness, washed grade optimised for paper coating slurries. Its controlled particle size distribution delivers a smooth coating surface with excellent light scattering, improving print gloss and ink holdout.

ProcessPrecision Washing
Target GritZero (0.000% on 400 Mesh)
Target WhitenessHigh (94%+)
Purity LevelLess Contamination
Primary UseCeramics & Precision Coatings
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UT-ULTRA Premium Calcined Kaolin
Coming Soon

UT-ULTRA

Our upcoming fully calcined kaolin engineered for specialty thermal and inkjet papers requiring maximum brightness and precise pore-size control. Near-zero impurities ensure clean, consistent coating performance.

ProcessFull Calcination
Target WhitenessExtremely High
Target QualityMedical Grade Sterile
Impurity LevelZero Contamination
Primary UseThermal & Inkjet Paper
Request Early Access

Start Your Inquiry

Factory direct pricing for local and international orders.

We will contact you back as soon as possible.

Inquire: sales@darson.co.th
Have a chat: +66 65 393 2426
Come visit: Nakhon Pathom, Thailand
Darson