S-LEC Film Division Digital Movie・Catalog

Environmental friendliness, comfort, and safety are three key elements called for in cars today. In the last few years, SEKISUI has added comfort-enhancing features, such as sound insulation and solar control, to traditional interlayer films that originally increased the safety of glass.
And now, the development of S-LEC™ Sound and Solar Film has at last given glass the functions that contribute to all three of these main elements. This interlayer film, which achieves sound insulation and solar control in a single sheet, is receiving attention as a revolutionary solution that can simultaneously offer quietness, high fuel economy by easing the burden on air conditioners, as well as a high level of safety against collisions.

S-LEC™ Sound and Soler Film :made possible by multi-layer and fine particle technologies

S-LEC™ Sound and Solar Film is achieved by sandwiching a sound insulation resin layer and a colored layer between PVB, and evenly distributing solar control particles on that multi-layer structure. Now technology from Sekisui allows particles to be distributed evenly in a multi-layered, ultra-thin interlayer film.

[Sound Insulating Performance] Cut sound energy down to a third

As evident in the graph, S-LEC™ Sound and Solar Film effectively controls low-frequency vibration energy from the engine and reduces the shrilling noise of wind. These figures show that audible noise is reduced to a third of its original loudness.

[Solar Control Performance and Electromagnetic Permeability] Cut infrared rays from sunlight and reduce wasteful use of fuel. Let through radio waves.

Mid-infrared rays of 1,500 to 2,100 nm in wavelength result in a burning sensation on the skin, and increase cabin temperature. S-LEC™ Sound and Solar Film effectively cuts solar rays in this wavelength band. Controlling the temperature rise translates into less air conditioner use, greatly improving fuel economy.*
Radio waves across most frequency bands are not blocked, letting through mobile phone and electronic toll collection (ETC) signals, problem-free.

* Tests have shown that compact cars in a traffic jam that use air conditioning can expect an increase in fuel economy of approximately 3%.Based on materials from an academic lecture given by the Society of Automotive Engineers of Japan (jointly presented by Asahi Glass and Mitsubishi Motors)