Description:
The Hoodliner is a polyether, urethane-based,
thermo-acoustic foam with a reinforced aluminized
facing and a pressure-sensitive adhesive on the
application side. The Hoodliner is designed to be
die cut to shape and then applied in a vehicle's
engine compartment to the underside of the hood.
The adhesive side is smooth, ensuring complete
contact with the underlying surface without any air
pockets of channels. Both material and adhesive
can withstand temperature ranges between -40°F
and +225°F (-40°C to +107°C).
Acoustic Properties:
The effectiveness of an acoustic foam depends on
its ability to convert sound waves into heat
energy. Dynamic Control's Hoodliner has a
combination of open and closed cells to accept
and dissipate sound waves. If all the foam cells
were open, sound waves would simply pass
through. Conversely, if all the foam cells were
closed, few sound waves would be absorbed. The
acoustic foam in Hoodliner is cast in sheets for
consistent resistivity levels throughout the foam,
to assure maximum sound absorption.
Applications:
Hoodliner is used to treat automotive engine
compartments. It has a reinforced aluminized
facing, which provides 97% heat reflection. This
reflection reduces heat transfer to the hood and,
thus, wear to the painted surfaces. It is also used
in other applications requiring heat-resistive
acoustic foams.
Installation:
Use scissors, knife or die to cut Hoodliner to the
desired size and shape before removing the
backing paper. Next, remove dust, grease,
moisture, and other foreign matter from the
application surface. Peel off the backing paper.
The simplest application technique is to bend the
Hoodliner slightly and attach it along its shortest
edge. Press the Hoodliner firmly into place. You
may want to use a roller for quicker application.