(3)
3M
™
Double Coated Tapes 9786 • 9786NP
Storage
It is best to use the rolls as soon as possible after receipt. Ideally, rolls should be laminated to the intended substrates as soon
after receipt as possible.
Store in original cartons at 70°F (21°C) and 50% relative humidity.
When storing rolls, lay them flat in a horizontal position with release treated wafers between the rolls.
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.
Application Tips
Handling Recommendations:
• Rolls should be handled at a minimum and handled by their core and top layer, without applying a lot of finger pressure.
• Do not handle the rolls by their sides, as this can cause the sides of the adhesive to bond with fingertips.
For additional information, please refer to the Laminating Adhesives 300MP Technical Bulletin (70-0709-3905-6).
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.
Shelf Life
If stored under proper conditions, product retains its performance and properties for two years from date of manufacture.
