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Technology has changed since 3M invented window films
in 1966. Back then, increased sun control or heat gain
reduction performance resulted primarily from depositing
heavier levels of metal on a polyester film. However,
this increased performance sacrificed the film's visible
light transmission.
Since then, 3M has developed films that manage the
solar spectrum selectively. What this means is that
selective wavelength films block more of the near infrared
or heat portion of the spectrum and less of the visible
light. Selective wavelength films provide an improved
balance between performance and light. The unique engineering,
construction, and use of materials allow these special
films to let the natural visible light shine without
a compromise in performance.
This is important to many of our clients today as they
strive to use natural visible light (day lighting) in
their buildings. With 3M's selective wavelength films,
our clients can better maintain energy-efficient natural
light and still help control temperature imbalances
within the building.
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