For maximum bond strength (during installation of the final part) the surface
should be thoroughly cleaned and dried. Typical cleaning solvents are
heptane (for oily surfaces) or isopropyl alcohol for plastics. Use reagent grade
solvents since common household materials like rubbing alcohol frequently
contain oils to minimize the drying affect on skin and can interfere with the
performance of a pressure-sensitive adhesive.
*Note: Carefully read and follow the manufacturer’s precautions and
directions for use when working with solvents. These cleaning
recommendations may not be in compliance with the rules of certain air
quality management districts in California; consult applicable rules before
use.
It is necessary to provide pressure during lamination (1.5-20 pli
recommended) and during final part installation (10-15 psi) to allow the
adhesive to come into direct contact with the substrate. Using a hard edged
plastic tool, which is the full width of the laminated part, helps to provide the
necessary pressure at the point of lamination. Heat can increase bond strength
when bonding to metal parts (generally this same increase is observed at
room temperature over longer times, weeks). For plastic parts, the bond
strength is not enhanced with the addition of heat.
The ideal adhesive application temperature range is 60°F (15.6°C) to 100°F
(38°C). Application is not recommended if the surface temperature is below
50°F (10°C) because the adhesive becomes too firm to adhere readily. Once
properly applied, at the recommended application temperature, low
temperature holding is generally satisfactory (please refer to section VII of
the Typical Physical Properties and Performance Characteristics).
When bonding a thin, smooth, flexible material to a smooth surface, it is
generally acceptable to use 2 mils of 3M™ Adhesive 200MP. If a texture is
visible on one or both surfaces, the 5 mil 3M adhesive 200MP would be
suggested. If both materials are rigid, it may be necessary to use a thicker
adhesive to successfully bond the components. 3M™ VHB™ Acrylic Foam