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 1 2 Faceside Carrier Backside Liner Total Tape Product Adhesive Type/ Adhesive Color, Type, Liner Thickness Number Thickness Thickness Thickness Print Caliper (w/o liner) 3 3M Double 2.8 mil Clear PET 3.4 mil Tan, 58 , 4.2 mil 6.7 mil Coated Tape (0.071mm) 0.5 mil (0.086mm) Polycoated Kraft (0.11mm) (0.17mm) 4 9490LE (0.013mm) 3M 300LSE 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. 3 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 3M Double Coated Tape 9490LE Adhesion to stainless steel Oz/in (N/cm) kg/25.4 mm ASTM D3330 - 90 degree - 15 minute RT (FS/BS) 25/60 (2.7/6.6) 0.7/1.7 - 72 hour RT (FS/BS) 125/140 (13.7/15.3) 3.6/4.0 - 72 hour 158F (70C) (FS/BS) 125/160 (13.7/17.5) 3.6/4.6 ASTM D3330 - 180 degree, 2 mil Al foil - 72 hr RT Faceside 135 (14.8) 3.8 Backside 155 (17.0) 4.4 Shear Strength - ASTM D3654 modified - 2 (.5 inch sample size) 1000 grams at 72F (22C) >10,000 minutes 500 grams at 158F (70C) >10,000 minutes Relative High Temperature Operating Ranges: Long Term (days, weeks) 200F (93C) Short Term (minutes, hours) 300F (149C) Relative Solvent Resistance Very Good Dielectric Properties: Dielectric Strength 1025 volts/mil Breakdown Voltage 5700 volts Available Sizes Roll length, width, slitting tolerance, core size. Available Lengths (Subject to minimum order requirements) Maximum Length 1/2 to 63/64 180 yd. (164 m) 1 to 3 360 yd. (329 m) 3 to 48 360 yd. (329 m) 48 to 54 360 yd. (329 m) Normal Slitting Tolerance 1/32 (0.8 mm) Core Size ID 3.0 (76.2 mm) Sheet Size Not Available (2)