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Gillette, WY 82716
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3M authorized dealer # 5209

Window Tinting Technical Information

topimage-leftOver the past three decades a tremendous amount of research has gone into the development of window film. This research has resulted in the ability of window film to selectively filter desired wavelengths of light.

All 3M window film filters 99% of the sun's ultraviolet radiation. This means that even the lightest films work well for fade control.

What is window film made of?middleimage-right

Window film is composed of alternating layers of a polyester polymer and a laminating adhesive.

Depending of the specific type of film, the polyester layer may be dyed, metalized, coated with an ultra violet inhibitor, or simply added for additional strength.

Dyes are added to give the film it's characteristic color. Dyes also work to reduce the amount of heat entering a room by absorbing some of the light. A broad variety of dyed films are available to ensure that one will match your specific need.

The metalized coating is the heart of the film's efficiency. Various methods of metalizing have been developed to guarantee that a uniform layer is distributed onto the polyester layer. The metalized layer reflects light and heat back into it's incident direction. The release liner protects the pressure sensitive adhesive from exposure prior to it's application onto the glass surface.

Causes of fading:

How are light, heat, and fading related?

Light by itself is not heat. Light is converted into heat when it is absorbed by a substance, such as clothing, carpet, or furniture. Light is not converted into heat if it is reflected. The most efficient window films are reflective because rather than convert light into heat, they simply reflect it back to its source.

There is a common misconception that ultra violet light causes fading and that by eliminating ultra violet light fading will stop. The fact is that there are many sources of fading. Ultra violet light is about 40% responsible for fading. Visible light and heat also contribute significantly to fading. Eliminating ultra violet light certainly reduces fading. To further reduce fading heat and visible light may be reduced.

What is "Low E"?

When heated, a surface may either absorb or reflect the incident heat. Emissivity refers to the ability of a surface to absorb or reflect heat. Low emissivity means that the surface is a poor absorber of heat, hence the heat is reflected. Low emissivity window film works in the summer by reflecting heat back outside, preventing it from entering through the window. Low emissivity window film works in the winter by reflecting heat back into the home, keeping it from escaping to the outside.

The emissivity of some common materials are listed below:

Material Emissivity

Polished gold 0.02

Polished silver 0.02

Polished aluminum 0.05

Low emissivity window films 0.29 - 0.45

Glass 0.84

Paper 0.89

Wood 0.91

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