Industrial Applications

Kaolin for Plastics

Prevents film sticking blocking and improves thermal properties in agriculture.

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Kaolin for Plastics

In plastic film production (PE/PP), smooth layers tend to stick together due to strong surface contact (blocking), making them difficult to unroll.

Kaolin creates microscopic "bumps" on the film surface. This roughness prevents the layers from sealing flat against each other, allowing easy unrolling. Additionally, Calcined Kaolin absorbs Infrared (IR) heat, making it perfect for greenhouse films to retain heat at night (Thermic Effect).

  • Prevents Film Blocking
  • Absorbs Infrared (IR) Heat
  • Improves Electrical Insulation (Cable)

Anti-Blocking Mechanism

Layer 1 Layer 2 Air Gap (No Sticking)

Kaolin particles create separation between film layers

Performance Characteristics

High IR Absorption

Traps heat in greenhouses (thermic effect) better than silica.

Low Haze

Fine particle size maintains transparency of the plastic film.

Inert Chemical

Compatible with all major polymers (PE, PP, PVC, PET).

Recommended Grades

Grades for plastic compounding and masterbatch — improving stiffness, reducing resin cost, and enhancing surface finish in PE, PP, and PVC applications.

UT-WHITE High Brightness Kaolin

UT-WHITE

A high-brightness filler for polyolefin and PVC compounding. Its platelet morphology improves stiffness and barrier properties in film and pipe applications, while its white colour makes it ideal for natural and light-coloured masterbatch.

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

UT-WASH

A fine, washed grade for premium plastic applications where surface aesthetics matter. Low grit content prevents surface defects and equipment wear, essential for thin films, clear compounds, and high-gloss injection-moulded parts.

SiO267.6%
Al2O316.8%
Whiteness94.1%
pH Value7.6
Oil Adsorption (g/g)0.511
Median Size (D50)4.233 μm
Particle Size600-1200 Mesh
Download Spec Sheet
UT-ULTRA Premium Calcined Kaolin

UT-ULTRA

Our upcoming calcined grade with maximum brightness and ultra-low metallic content, targeting engineering plastics, medical-grade compounds, and specialty films where purity and optical performance are non-negotiable.

ProcessFull Calcination
Target WhitenessExtremely High
Target QualityMedical Grade Sterile
Impurity LevelNear Zero
Primary UseEngineering & Medical-Grade Plastics
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sales@darson.co.th
Nakhon Pathom, Thailand
Darson