S-LEC Film Division Digital Movie・Catalog

The most important element called for in today's automobiles is the reduction of their burden on the environment?but not at the expense of comfort. The front windshield is becoming even more angled with a larger surface area for aerodynamic and visual reasons, while glass roofs are appearing with an emphasis on comfort. With these comes an increase in sunlight penetrating the cabin interior which pushes up both air conditioner use and fuel consumption. S-LEC™ Solar Control Film interlayer film is a solution to this problem-by controlling the cabin temperature, the film contributes to comfort and fuel efficiency.

* Tests have shown that compact cars in a traffic jam that use air conditioning can expect an increase in fuel economy of approximately 3%.

Fine particles with infrared ray filtering function distributed in interlayer film

Solar control fine particles are distributed in standard layers using SEKISUI’s own fine particle dispersion technology, which allows fine particles and materials with a variety of functions to be distributed evenly in an interlayer film resin. This has significantly reduced not only ultraviolet rays but also infrared rays, which result in less of a burning sensation on the skin.

[Solar Control Performance] Glass that also shields heat

While traditional interlayer film filters out more than 99% of ultraviolet rays, most of the infrared rays had penetrated across the film. S-LEC™ Solar Control Film filters out much of the infrared rays in addition to ultraviolet rays. Tests show that with Solar Control Film applied to the windshield glass, the surface temperature of the steering wheel that becomes too hot to touch when the automobile is parked in the summer, was approximately 10 degrees lower.

[Solar Control Performance] Filter out mid-infrared rays to eliminate the heat source

Sunlight exposure makes the skin burn, and the sunlight's mid-infrared rays-between 1,500 to 2,100 nm in wavelength-are said to have the most influence on heat. S-LEC™ Solar Control Film shuts out much of the light from this wavelength range. As demonstrated in the graph, the effectiveness of S-LEC™ Solar Control Film surpasses even those of heat absorbing green glass.

[Electromagnetic Permeability] Heat, no. Radio, yes.

Traditional heat-reflecting glass with a metallic coating reflects radio waves, as well as heat, and could impede mobile phones and electronic toll collection (ETC) signals. S-LEC™ Solar Control Film does not block radio waves across most frequency bands, so drivers and passengers can stay in touch while on the go.