Extensional Damping Pad (EDP), is
a lightweight, extensional damping composite with a viscoelastic
surface and presure sensitive adhesive backing. Designed for use on
thin metal or plastic panels, EDP reduces vibration and resulting
airborne sound. The composite is durable, moisture resistant and
Extensional Damper/Foam Composite (EDPA),consists
of a layer of Polydamp® acoustical foam with a urethane film
a damping pad layer with a high tack acrylic adhesive backing. EDPA is
an ideal product for equipment enclosures where both panel damping and
absorption of airborne sound are required.
Polydamp® V0 Damping Sheet (EDPVO)
is a flexible extensional damping material available in sheets and
custom diecut parts. It is ideal for controlling vibration and noise in
products whose surfaces are at or near resonance during their normal
operating cycle, such as; electrical appliances, medical and dental
equipment, office and electronic data processing equipment, industrial,
construction, over and off-highway transportation vehicles.
It is a UL94VO flammability rated material, which is required in most
electrical and medical equipment.
Polydamp® V-0 Foam Damping Sheet
is a composite consisting of a viscoelastic damping sheet laminated to
a flexible acoustical grade polyester urethane foam. The foam is
available with a variety of surface finishes (plain, densified
embossed, skinned, or films of urethane, metallized polyester and
Tedlar). It is available in sheets or die cut to customers
specifications and comes with a pressure sensitive backing and easy
Polydamp® ADA is
an impregnated viscoelastic material with high quality pressure
sensitive adhesives on both sides. It is used to bond two materials in
order to make a sound deadened structural composite. ADA sandwich
constructions of steel sheet, aluminum, plastic or combinations of
these or other materials show improved vibration characteristics and
give better transmission loss against airborne noise.
The ADA sheet is intended to be sandwiched between the structure to be
damped and an outer panel known as the constraining layer. The
thickness of the constraining layer must be matched to the thickness of
the basic construction. If the basic construction is a flat panel the
best damping properties are obtained if the constraining layer is the
same thickness as the base structure. However, good damping is also
achieved with a ratio of thickness of constraining layer to base
material of 3 to 1.
Polydamp® ADA for metal can withstand temperatures between
+194oF (-30oC to +90oC) and is resistant to aging. Since ADA is
protected between two impervious sheets the risk of mechanical or
chemical damage is minimal.
In the transportation and marine industries, ADA has been effective in
reducing the weight and improving the acoustical performance of
walkways, floors, firewalls and doors. By damping a structure, one
increases the transmission loss which results in less noise being
transmitted through the barrier.
In applications using thick metal, greater than .120 inches, ADA can be
used with a constraining layer to reduce impact noise and plate
resonance. Saws, timber handling equipment, loading bridges, flooring
plates, loading platforms for freight transport, chippers, conveyors,
hulls of boats etc. are prime applications for ADA.
Polydamp® Foil Damper (PFD) is
a light weight composite consisting of a very thin viscoelastic damping
compound on an aluminum foil which is bonded onto substitutes that are
vibrating close to their natural frequency. This constrained layer
damping composite offers very high damping over a broad temperature
range over adding minimal weight to the existing structure. PFD has a
built in Peel N Stick adhesive making it ideal for field and assembly
line installation to clean substrates. Available polymers cover a broad
frequent spectrum and temperature range.
Helicopter and fixed wing aircraft, medical monitoring and diagnostic
equipment, appliances, metal carts, steel doors, cabinets, bins,
drawers, sinks, conveyors, and enclosures.
Polydamp® Spray Damp (PSD) is an inorganically filled
emulsion vibration damping compound which can be trowelled directly
onto vibrating metal or plastic or thinned and sprayed onto the
surface. It comes in 5 gal. pales and 55 gal. drums, and should be kept
from freezing as this will cause spoilage. It curves at room
temperature in several hours, when applied in a thickness of 1/16" or
less, and 24 hrs. at a maximum 1/8" thickness per application.