Technical Data
January 2011
3M™ Optically Clear Adhesive 8261 • 8262 • 8263 • 8264 • 8265
Product Description
3M™ Optically Clear Adhesive 826X:
3M™ Optically Clear Adhesive 8261, 8262, 8263, 8264 and 8265 are bare ITO compatible and outgassing resistant.
It is commonly used in touch screen displays and other applications requiring an optically clear bond.
Product Construction
Product Number
8261
8262
3M™ Optically Clear Adhesive
8263
8264
8265
Adhesive Type:
Acrylic
Acrylic
Acrylic
Acrylic
Acrylic
None
None
None
None
None
3.0 mil
(75 micron)
Clear Polyester
3.0 mil
(75 micron)
Clear Polyester
3.0 mil
(75 micron)
Clear Polyester
3.0 mil
(75 micron)
Clear Polyester
3.0 mil
(75 micron)
Clear Polyester
1.0 mil
(25 micron)
2.0 mil
(50 micron)
3.0 mil
(75 micron)
4.0 mil
(100 micron)
5.0 mil
(125 micron)
3.0 mil
(75 micron)
Clear Polyester
3.0 mil
(75 micron)
Clear Polyester
3.0 mil
(75 micron)
Clear Polyester
3.0 mil
(75 micron)
Clear Polyester
3.0 mil
(75 micron)
Clear Polyester
Adhesive Carrier:
Approximate Thickness:
Release Liner
Adhesive
Release Liner
Typical Physical Properties and Performance Characteristics
Note: The following technical information and data should be considered representative or typical only and should not be
used for specification purposes.
Refractive Index:
Abe Refractometer
3M™ Optically Clear Adhesive
826X
1.48
Haze:
Haze was measured according to ASTM D1003.
3M™ Optically Clear Adhesive
826X
0.5%
3
3M™ Optically Clear Adhesive 8261• 8262 • 8263 • 8264 • 8265
Typical Physical Properties and Performance Characteristics (continued)
Note: The following technical information and data should be considered representative or typical only and should not be
used for specification purposes.
Transmission:
ASTM E903, D1003, and E284
Reflective-Corrected Total Luminous
Transmission vs. Wavelength
3M™ Optically Clear Adhesive 826X
101.00
100.00
Transmittance %
99.00
98.00
97.00
3M™ Optically Clear Adhesive 826X
96.00
95.00
380
430
480
530
580
630
680
730
780
Wavelength (nm)
Color:
ASTM-E1164-07 / CIELAB
(BYK Gardner TCS Plus spectrophotometer, model 8870)
3M™ Optically Clear Adhesive
826X
L* = 97.02
a* = -0.06
b* = 0.20
Peel Adhesion:
ASTM D3330 modified, 180° peel, 12 in/min, 2 mil polyester backing. Units: Oz/in
Float Glass
20 minute dwell
Units Oz/in N/100mm
PC
3 days dwell
Oz/in N/100mm
20 minute dwell
PMMA
3 days dwell
20 minute dwell
PET
3 days dwell
20 minute dwell
Oz/in N/100mm Oz/in N/100mm Oz/in N/100mm Oz/in N/100mm Oz/in N/100mm
3 days dwell
Oz/in N/100mm
8261
58
63
36
39
36
39
33
36
35
39
37
41
49
54
35
38
8262
70
77
74
81
54
59
81
89
60
66
63
69
58
64
57
62
8263
72
79
79
87
57
62
83
91
62
67
67
73
59
65
60
66
8264
73
80
83
91
69
76
90
98
69
75
70
77
64
71
66
72
8265
81
88
92
101
70
76
98
108
72
79
76
83
65
71
68
75
(2)
3M™ Optically Clear Adhesive 8261• 8262 • 8263 • 8264 • 8265
Typical Physical Properties and Performance Characteristics (continued)
Note: The following technical information and data should be considered representative or typical only and should not be
used for specification purposes.
Durability:
3M™ Optically Clear Adhesives 826X are laminated between two different substrates and subjected to high temperature/
humidity condition for 3 days.
Substrate Configuration
60°C / 90% RH
PMMA (1mm) - Glass (1mm)
Pass
PC (1mm) - Glass (1mm)
Pass
PMMA (1mm) - Polarizer on glass
Pass
PC (1mm) - Polarizer on glass
Pass
*Pass – No visual defect due to aging including bubbles, delamination or blisters.
Typical Electrical Properties of 3M™ Optically Clear Adhesive 826X at 25°C and 1 KHz.
ASTM-D150-92
Product
Dielectric Constant
Tan (Delta)
826X
5.2
0.0377
Shelf Life:
Product retains its performance and properties for two years from date of manufacture if properly stored at room temperature
conditions of 72°F (22°C) and 50 relative humidity. Storage in plastic bag is recommended.
Available Sizes
Available Lengths
(subject to minimum order requirements):
Maximum length - 3M™ Optically Clear Adhesive 826X
180 yards or 540 feet
Available Widths
(subject to minimum order requirements):
Maximum width - 3M™ Optically Clear Adhesive 826X
Normal Slitting Tolerance
60 inches
± 1/32 in. (0.8 mm)
Core Size
3.0 in. (76.2 mm)
(3)
3M™ Optically Clear Adhesive 8261• 8262 • 8263 • 8264 • 8265
Application Techniques
For maximum bond strength the surface should be thoroughly cleaned and dried. To obtain greatest benefit, laminations
should be done in the cleanest environment possible with static charge elimination.
Bond strength can be improved with firm application pressure and moderate heat causing the adhesive to develop intimate
contact with the bonding surface.
General Information
• Light transmission >99% when corrected for reflection losses.
• Haze level < 2%.
• Free of birefringence with no film carrier.
• High interfacial adhesion.
• Non-whitening at high temperature/humidity.
• Enhanced durability on outgassing substrates (PC, PMMA).
• Bare ITO compatible for touch applications.
• High temperature, humidity, and UV resistance.
• Long term durability without yellowing, delaminating, or degrading.
• High cohesive and peel strength for reliably bonding most transparent substrates.
• Wound on plastic cores and wrapped in plastic to eliminate paper fiber contamination.
• Two film liners for optimum adhesive smoothness and differential release for ease of processing and protection from
contamination.
Application Ideas
• Touchscreens- for bonding film and glass laminates.
• Transparent graphic overlays.
• Projection screens.
• Avionics/military displays.
• Optical management films for LCD
Processing:
Laminating
Recommended nip roll or roller platen press type laminator to maintain optical aesthetics when laminated. Hand lamination
not advised. Use best process control standards possible to control variables. (See 3M Laminating Technical Bulletin for
additional information.)
(4)
3M™ Optically Clear Adhesive 8261• 8262 • 8263 • 8264 • 8265
Certification/Recognition
MSDS: 3M has not prepared a MSDS for these products which are not subject to the MSDS requirements of the
Occupational Safety and Health Administration’s Hazard Communication Standard, 29 C.F.R. 1910.1200(b)(6)(v). When
used under reasonable conditions or in accordance with the 3M directions for use, these products should not present a health
and safety hazard. However, use or processing of the products in a manner not in accordance with the directions for use may
affect their performance and present potential health and safety hazards.
TSCA: These products are defined as an article under the Toxic Substances Control Act and therefore, are exempt from
inventory listing requirements.
RoHs Complaint/REACH Compliant: These products comply with the European Union’s “Restriction of Hazardous
Substances” (RoHs) initiative and with European REACH regulations 2002/95/EC and 2005/618/EC.
For Additional Information
To request additional product information or to arrange for sales assistance, call toll free 1-866-599-4227. Address
correspondence to: 3M, Electronics Markets Materials Division, 3M Center, Building 225-3S-06, St. Paul, MN 551441000. Our fax number is 651-778-4244 or 1-877-369-2923. In Canada, phone: 1-800-364-3577. In Puerto Rico, phone:
1-787-750-3000. In Mexico, phone: 52-70-04-00.
Important Notice
All statements, technical information, and recommendations related to 3M’s products are based on information believed
to be reliable, but the accuracy or completeness is not guaranteed. Before using this product, you must evaluate it and
determine if it is suitable for your intended application. You assume all risks and liability associated with such use.
Any statements related to the product which are not contained in 3M’s current publications, or any contrary statements
contained on your purchase order shall have no force or effect unless expressly agreed upon, in writing, by an authorized
officer of 3M.
Warranty; Limited Remedy; Limited Liability.
This product will be free from defects in material and manufacture at the time of purchase. 3M MAKES NO OTHER
WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the warranty period stated above,
your exclusive remedy shall be, at 3M’s option, to replace or repair the 3M product or refund the purchase price of the 3M
product. Except where prohibited by law, 3M will not be liable for any indirect, special, incidental or consequential
loss or damage arising from this 3M product, regardless of the legal theory asserted.
3
Electronics Markets Materials Division
3M Center, Building 225-3S-06
St. Paul, MN 55144-1000
1-866-599-4227 phone
651-778-4244 fax
www.3M.com/electronics
3M is a trademark of 3M Company.
Please recycle. Printed in U.S.A.
© 3M 2011. All rights reserved.
60-5002-0498-1
(5)
3