Micropearl product line up (Plastic Spacer)Micropearl is uniformly particle size distribution with a spherical particles (beads).
Base technology was cultivated with LCD spacer applications

Micropearl SP/GS: Uniform resin particles

1. Characteristic

Wide range of particle sizes selection

  1. Uniform particle size distribution: Coefficient of variation (Cv) ≦ 7%, even gap control is possible
  2. Wide range of size selections : from 2 µm to 600 µm.
  3. Excellent in voltage, heat, chemical resistance
  4. Dielectric resistance test:600V
  5. Product performance are stabe in extreme temperatures -40 ~ 200 ℃
  6. Also maintains stable performance against to react with a variety of organic solvents
  7. Our technology can provide a combination of particles with adhesive layer
  8. It can also be used as the replacement of glass beads
Highly crosslinked polymer
Highly crosslinked polymer

2. Line up of hardness

・Wider range of hardness is available
・Uniformal particle size are possible by using wider range of materials

Micropearl SLC(under development)
Micropearl EZ
Micropearl KB
Micropearl EX
Micropearl SP/GS
Micropearl EXH
Silica particle (General Products)

3. Product line up

Wide range of particle size selection according to customer's requirements

SP series
Product name Average particle diameter cv(%) Product name Average particle diameter cv(%)
SP-203 3.00±0.05 About 5% SP-211 11.00±0.10 About 5%
SP-2035 3.50±0.05 SP-212 12.00±0.10
SP-204 4.00±0.05 SP-213 13.00±0.10
SP-2045 4.50±0.05 SP-214 14.00±0.10
SP-205 5.00±0.05 SP-215 15.00±0.10
SP-2055 5.50±0.05 SP-218 18.00±0.10
SP-206 6.00±0.05 SP-220 20.00±0.15
SP-2065 6.50±0.05 SP-225 25.00±0.20
SP-207 7.00±0.05 SP-230 30.00±0.25
SP-2075 7.50±0.05 SP-235 35.00±0.30
SP-208 8.00±0.05 SP-239 39.00±0.30
SP-2085 8.50±0.05 SP-250 50.00±0.50
SP-209 9.00±0.05 SP-275 75.00±0.50
SP-2095 9.50±0.05 SP-L100 100.00±1.00
SP-210 10.00±0.10 SP-L110 110.00±1.00
Average particle diameter unit:µm
GS series
Product name Average particle diameter cv(%) Product name Average particle diameter cv(%)
GS-220 20.00±1.00 About 7% GS-L150 150.0±7.5 About 7%
GS-230 30.00±1.50 GS-L200 200.0±10.0
GS-235 35.00±1.75 GS-L250 250.0±12.5
GS-240 40.00±2.00 GS-L300 300.0±15.0
GS-250 50.00±2.50 GS-L350 350.0±17.5
GS-255 55.00±2.75 GS-L375 375.0±17.5
GS-260 60.00±3.00 GS-L400 400.0±20.0
GS-270 70.00±3.50 GS-L425 425.0±20.0
GS-280 80.00±4.00 GS-L450 450.0±22.5
GS-290 90.00±4.50 GS-L475 475.0±22.5
GS-L100 100.00±5.00 GS-L500 500.0±25.0
GS-L110 110.00±5.50 GS-L525 525.0±25.0
GS-L120 120.00±6.00 GS-L550 550.0±27.5
GS-L130 130.00±6.50 GS-L600 600.0±30.0
GS-L140 140.00±7.00    
Average particle diameter unit:µm

4. Basic performance properties

Item Test result Form Test method
Compressive fracture strength[kg/mm2] 11 Block JIS K7208 (Cylinder)
Compressive elasticity modulus[mg/mm2] 480 Block JIS K7208 (Cylinder)
Specific gravity 1.19 Plate JIS K7122
Coefficient of thermal expansion[/℃] 9.8×10 Plate average temperature of 20 to 80℃
Thermal decomposition temp[℃] 330 Product TGA(In the air)
Volume resistivery[Ωcm] 3.6×10 Plate JIS K6911(500V)
Permittivity 2.9 Plate JIS K6911(1,000Hz)
Dissipation factor 0.02 Plate JIS K6911(1,000Hz)
Total light transmittance ratio 86.00% Plate JIS K6714(2.3t)
Haze 3.50% Plate JIS K6714(2.3t)
Refractive index 1.57 Plate ASTM(Abbe Refractive index)
Volatile content 0.60% Product JIS(105℃×1H)
Chemical resistance Weight rate of change Form Weight change after the 10th dipping (20°)
Water 0.5% Plate 2 mmt 1g DI water
NaOH -0.20% Plate 2 mmt 1g 1/10 N
IPA 1.10% Plate 2 mmt 1g 100%
N-MP 0.00% Plate 2 mmt 1g 100%
Acetone 1.00% Plate 2 mmt 1g 100%
HCl 0.40% Plate 2 mmt 1g 1/10 N
Ion content/SP   Form Analysis method
Na ≦2PPM Product Atomic Absorption Spectrometry
K ≦1PPM Product Atomic Absorption Spectrometry
Ca ≦1PPM Product Atomic Absorption Spectrometry
Fe ≦2PPM Product Atomic Absorption Spectrometry
Cl ≦1PPM Product 90℃1Hr、Extra pure water extraction. Ion chromatography method

CatalogProduct catalog

Uniform resin particles Micropearl SP/GS Product Catalog