Project Description

Plastic spacers are made of highly crosslinked monodisperse polymer microspheres, which have very narrow particle size distribution.

EPRUI supplies plastic spacers for LCD, PDLC display which can precisely control the panel thickness without damage on the base plate and make the liquid screen far greater clarity.

Plastic Spacers


  • Uniform sphere and smooth surface
  • Accurate particle size control
  • Narrow particle size distribution
  • Excellent resistance against heat, cold and chemicals
  • Easy to disperse and no aggregation
  • Excellent mechanical strength and superior crush resistance
  • Free from contaminations

Mechanical Data

ItemTypical ResultTest Method
Mean Diameter, um±0.05umCoulter Counter Multisizer
CV1.0%-3.5%Coulter Counter Multisizer
Thermal Deposition Temperature340℃TGA
Volatile Components<1%105℃ 1h
Transmittance90%1mm Plate
Haze2.00%1mm Plate
Volume Reisistance,1015 ohm cm3.3JIS K6911
Dielectric Constant at 1kHz2.8JIS K6911

Product List

EPRUI provides three types (H, X and A) of high quality plastic spacers. Among the three series, A type has the highest recovery rate and molulus of elasticity, X type is next and H type is the last.


Specification & Chemical Reisistance

SpecificationH typeX typeA TypeTest Method
Density g/cm31.081.091.09Multi Volume Density Test
Refractive Index1.571.581.58Na-D-ray
10% Molulus of Elasticity kgf/mm2300-600400-650450-700Shimadzu MCT210
Chemical ReisistanceH typeX typeA TypeTest Method
Water0.50%0.40%0.40%Weight change after
immersion for 10 days
at 20 ℃
0.1N NaOH0.10%0.10%0.10%
0.1N HCl0.20%0.30%0.30%


Recommended Spraying Methods

Dry Spray: For best results, it is recommended to vacuum dry our plastic spacers at 80 °C for 8 hrs (caps off) before dry spraying, which ensures the spacers disperse smoothly and freely.

Wet Spray: Disperse our plastic spacer in organic solvent such as isopropanol or ethanol, ultrasonicate for a while before adding proper amount of water, which usually works better than dispersing the beads directly in aqueous solution containing of organic solvent.

Recommended Spraying Density

Plastic SpacersTNSTN
Spraying Density400-100 particles mm280-200 particles mm2

Packing & Storage

  • 10g or 20g glass vials with plastic caps and inserts to keep moisture away from the contents. PET vials of 10 g or 20 g are also available upon request.
  • The label on the vial includes product name, lot number, expiration date, weight, RoHS, inspection passing stamp, etc.
  • The vials should be stored in dehumidifying cabinets with controlled temperature and humidity. The cabinet should be set at room temperature and kept under25% humidity.

It is recommended to use up the entire product in a vial once it is opened.

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