Technical Data
November 2011
3M
™
Double Coated Tape 9490LE
Product Description
3M™ Double Coated Tape 9490LE with 3M™ Laminating Adhesive 300LSE provides high bond strength to most surfaces,
including many low surface energy plastics such as polypropylene and powder coated paints. The acrylic adhesive also
provides excellent adhesion to surfaces contaminated lightly with oil typically used with machine parts. 3M double coated
tape 9490LE offers the added feature of 3M™ Laminating Adhesive 300MP on one side to provide excellent bond strength
to a variety of foam and fabric materials.
Construction
Product
Number
3M™ Double
Coated Tape
9490LE
4
Faceside
1
Adhesive
Thickness
2.8 mil
(0.071mm)
Carrier
Type/
Thickness
Clear PET
3
0.5 mil
(0.013mm)
Backside
2
Adhesive
Thickness
3.4 mil
(0.086mm)
Liner
Color, Type,
Print
Tan, 58#,
Polycoated Kraft
“3M 300LSE”
Liner
Caliper
4.2 mil
(0.11mm)
Total Tape
Thickness
(w/o liner)
6.7 mil
(0.17mm)
Note 1: Faceside (FS) adhesive 300MP is on the interior of the roll, exposed when unwound.
Note 2: Backside (BS) adhesive 300LSE is on the exterior of the roll, exposed when liner is removed.
Note 3: PET (Polyester).
Note 4: The caliper listed is based on a calculation from manufacturing controlled adhesive coat weights using a density of 1.012 g/cc.
Features
• This tape has a moisture resistant polycoated kraft liner which can withstand high humidity conditions with minimal
cockling or wrinkling.
• This tape has a film carrier which can add dimensional stability to foams and other substrates and also make it easier to
handle the tape during slitting and die-cutting.
• The bond strength of 3M™ Laminating Adhesive 300LSE increases as a function of time and temperature, and has very
high initial adhesion.
Application Ideas
• Foam attachment for electronic assemblies.
• Low surface energy substrates.
• Graphic attachment of high surface energy and low surface energy.
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3M
™
Double Coated Tape 9490LE
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.
Product Number
Adhesion to stainless steel
ASTM D3330 - 90 degree
- 15 minute RT (FS/BS)
- 72 hour RT (FS/BS)
- 72 hour 158°F (70°C) (FS/BS)
ASTM D3330 - 180 degree,
2 mil Al foil - 72 hr RT
Faceside
Backside
Shear Strength - ASTM D3654 modified -
(.5 inch
2
sample size)
1000 grams at 72°F (22°C)
500 grams at 158°F (70°C)
Relative High Temperature
Operating Ranges:
Long Term (days, weeks)
Short Term (minutes, hours)
Relative Solvent Resistance
Dielectric Properties:
Dielectric Strength
Breakdown Voltage
1025 volts/mil
5700 volts
200°F (93°C)
300°F (149°C)
Very Good
>10,000 minutes
>10,000 minutes
135 (14.8) [3.8]
155 (17.0) [4.4]
3M™ Double Coated Tape 9490LE
Oz/in (N/cm) [kg/25.4 mm]
25/60 (2.7/6.6) [0.7/1.7]
125/140 (13.7/15.3) [3.6/4.0]
125/160 (13.7/17.5) [3.6/4.6]
Available Sizes
Roll length, width, slitting tolerance, core size.
Available Lengths (Subject to minimum order requirements)
Maximum Length
1/2" to 63/64"
1" to 3"
3" to 48"
48" to 54"
Normal Slitting Tolerance
Core Size ID
Sheet Size
180 yd. (164 m)
360 yd. (329 m)
360 yd. (329 m)
360 yd. (329 m)
±1/32" (0.8 mm)
3.0" (76.2 mm)
Not Available
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3M
™
Double Coated Tape 9490LE
Application Techniques
Bond strength is dependent upon the amount of adhesive-to-surface contact developed. Firm application pressure and
moderate heat, from 100°F (38°C) to 130°F (54°C), will assist the adhesive in developing intimate contact with the
bonding surface.
To obtain optimum adhesion, the bonding surfaces must be clean, dry and well unified. Some typical surface cleaning
solvents are isopropyl alcohol or heptane.*
Ideal tape application temperature range is 70°F to 100°F (21°C to 38°C). Initial tape application to surfaces at temperatures
below 50°F (10°C) is not recommended because the adhesive becomes too firm to adhere readily. However, once properly
applied, low temperature holding is generally satisfactory.
*Note:
Carefully read and follow the manufacturer’s precautions and directions for use when working with solvents.
These cleaning recommendations may not be compliant with the rules of certain Air Quality Management
Districts in California; consult applicable rules before use.
Environmental Performance
Humidity Resistance:
High humidity has minimal effect on adhesive performance. No significant reduction in bond
strength is observed after exposure for seven days at 90°F (32°C) and 90% relative humidity.
UV Resistance:
When properly applied, nameplates and decorative trim parts are not adversely affected by exposure to
direct sunlight.
Water Resistance:
Immersion in water has no appreciable effect on the bond strength. After 100 hours at room
temperature, the high bond strength is maintained.
Temperature Cycling Resistance:
High bond strength is maintained after cycling four times through:
4 hours at 158°F (70°C)
4 hours at -20°F (-29°C)
4 hours at 73°F (22°C)
Chemical Resistance:
When properly applied, nameplate and decorative trim parts will hold securely after exposure to
numerous chemicals including oil, mild acids and alkalis.
Storage
Store in original cartons at 70°F (21°C) and 50% relative humidity.
Shelf Life
If stored under proper conditions, product retains its performance and properties for two years from date of manufacture.
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3M
™
Double Coated Tape 9490LE
Certification/Recognition
MSDS:
3M has not prepared a MSDS for this product which is 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, the product should not present a health and safety
hazard. However, use or processing of the product in a manner not in accordance with the directions for use may affect its
performance and present potential health and safety hazards.
TSCA:
This product is defined as an article under the Toxic Substances Control Act and therefore, it is exempt from
inventory listing requirements.
RoHs Complaint/REACH Compliant:
This product complies 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 1-800-251-8634. Address
correspondence to: 3M, Electronics Markets Materials Division, 3M Center, Building 225-3S-06, St. Paul, MN 55144-
1000. 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
1-800-251-8634 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.
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