Products

Optically Clear Adhesives

28 Series

The Acrylic Series features an optical clear adhesive with degassing capabilities, ideal for bonding optical components in light guide plates used in e-readers and transflective displays. This adhesive offers high moisture vapor transmission rate (MVTR), effectively addressing issues such as bubbles and delamination caused by outgassing from rigid plastic components at high temperatures.

Specification

  • Typical Properties
Item Unit OPBTM-28D10 OPBTM-28510
Thickness um 250 250
Total Transmittance(TT) % 90.3 90.4
Hue(L*, a*, b*) - 96.0, -0.4, 0.4 96.0, -0.3, 0.3
Release Film(Haze) % 0.5 0.3
Yellowness Index(YI) - 0.5 0.5
Storage Modulus(G') kPa 105 135
Adhesion Force(Peeling Force) Kgf/inch 1.5 2.0

 

  • Reliability Properties
Reliability Condition Optical Propertiesa Appearanceb
105˚C, 1000h Δ Haze < 1
Δ YI < 1
T% > 90%
Δ b* < 1
No Bubble
No Delamination
-40˚C, 1000h
85˚C/85%RH, 1000h
-40~85˚C, 1000cycles
aStructure of Test Specimen Glass/OCA 50um/Glass,尺寸4x4 cm2
bAppearance of Test Specimen Glass/OCA/Polarizer/Glass,尺寸10x10 cm2

Structure

Application

Suitable for bonding applications of optical components such as e-books or composite boards.

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