Composition of heat resistant window films

The solar protection adhesive film is composed of two layers of polyester vacuum-metalized, an adhesive and a protective film (which is to be removed during the installation). They have an anti-scratch coating.

Solar Control

To avoid overheating:

• ensure air circulation,
• use films with a limited energy transmission, called “Anti-Heat Films”, which allow only a certain fraction of the solar energy to pass through, enabling the light to be conserved by minimizing overheating,
• save energy related to the use of air conditioners,
• gain up to 10 °C temperature,
• improve comfort,
• reduce glare.

Solar Factor

Solar factor (G) of a window is a ratio between the total energy entering a room through the window and the incident solar radiation. This total energy is the sum of the solar energy entering by direct transmission, and the energy yielded by the glazing to the interior atmosphere, following its heating by energy absorption.

Greenhouse Effect

Solar energy entering a room through a glazing is absorbed by objects and internal walls which when heated re-emit thermal radiation located mainly in the far infrared (greater than 5 μm). Glazing, even light, is practically opaque to radiations of wavelengths greater than 5μm. The solar energy entering through the windows is therefore trapped in the room which tends to heat up. It is the “greenhouse effect” that can be seen for example when a car is parked in direct sunlight with closed windows.
Application Method