Products

Optically Clear Adhesives

83B Series

OPBTM 83B Series is designed for bonding optical components such as curved lenses and optical films, including the thermoforming lamination of polarizers and brightness enhancement films onto curved lenses. The OPB™ 83B adhesive is an acrylic-based polymer featuring a high modulus design, which significantly improves bonding yield and prevents the formation of bubbles during high-temperature lamination.

Specification

  • Typical Properties
Item Unit OPBTM-83B2
Thickness um 50
Total Transmittance(TT) % 90.4
Hue(L*, a*, b*) - 96.1, -0.2, 0.2
Release Film(Haze) % 0.1
Yellowness Index(YI) - 0.2
Storage Modulus(G') kPa >400
Adhesion Force Kgf/inch 2.0

 

  • Reliability Properties
Reliability Condition Optical Propertiesa Appearanceb
95˚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

Thermoforming lamination applications for curved lenses.

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